| Details of Certain Accounts |
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Details of Certain Accounts | Capitalized Project Development Costs A reconciliation of capitalized project development costs is as follows:
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Three Months Ended March 31, |
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| Capitalized project development costs, at beginning of period |
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$ |
17,734 |
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$ |
25,204 |
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| Costs capitalized during the year, net of refunds |
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(498 |
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— |
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| Costs expensed from sale of projects during the year |
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— |
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1,259 |
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| Impaired costs written off during the year |
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(3,939 |
) |
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— |
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| Capitalized project development costs, at end of period |
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$ |
13,297 |
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$ |
26,463 |
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| Prepaids and Other Current Assets Prepaids and other current assets consisted of the following:
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| Supplier deposits |
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$ |
55,561 |
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$ |
43,485 |
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| Materials inventory |
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40,243 |
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4,594 |
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1,437 |
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3,473 |
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| Prepaid insurance |
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1,986 |
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2,942 |
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| Rebates receivable |
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770 |
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2,495 |
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| Other |
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5,531 |
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3,898 |
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| Total prepaids and other current assets |
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$ |
105,528 |
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$ |
60,887 |
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| Property and equipment, net consisted of the following:
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| Machinery and equipment |
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$ |
92,585 |
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$ |
80,022 |
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| Vehicles |
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4,454 |
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4,391 |
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| Vehicles under finance leases |
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64,125 |
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56,724 |
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| Furniture and fixtures |
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2,845 |
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2,845 |
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| Leasehold improvements |
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15,255 |
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15,214 |
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| Computer equipment |
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5,357 |
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5,305 |
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| Construction in progress |
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1,059 |
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3,340 |
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| Buildings and land |
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467 |
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467 |
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| Property and equipment, gross |
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186,147 |
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168,308 |
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| Less: Accumulated depreciation |
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(70,010 |
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(61,925 |
) |
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| Property and equipment, net of accumulated depreciation |
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$ |
116,137 |
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$ |
106,383 |
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| The following table summarizes depreciation expense included in “Cost of revenue” and “Selling, general and administrative expenses”:
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Three Months Ended March 31, |
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| Cost of revenue |
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$ |
7,895 |
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$ |
4,267 |
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| Selling, general and administrative expenses |
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956 |
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1,537 |
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| Total depreciation expense |
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$ |
8,851 |
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$ |
5,804 |
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| Accounts Payable and Accrued Expenses Accounts payable and accrued expenses consisted of the following:
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| Vendor payables and accrued purchases |
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$ |
413,186 |
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$ |
422,853 |
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| Accrued compensation and benefits |
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51,982 |
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73,330 |
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| Restricted Unit Appreciation Plan liability |
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39,464 |
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32,854 |
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| Indirect taxes payable |
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12,255 |
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11,905 |
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| Accrued professional services |
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4,585 |
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8,580 |
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| Accrued warranty |
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3,306 |
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4,278 |
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| Deferred acquisition consideration |
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— |
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5,500 |
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| Accrued interest |
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120 |
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2,918 |
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| Total accounts payable and accrued expenses |
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$ |
524,898 |
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$ |
562,218 |
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| Other Long-Term Liabilities Other long-term liabilities consisted of the following:
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Warranty reserves |
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6,969 |
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6,300 |
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Deferred tax liability |
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5,339 |
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5,339 |
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Deferred compensation liability |
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7,725 |
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5,343 |
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Deferred revenue |
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1,289 |
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1,362 |
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Total other long-term liabilities |
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$ |
21,322 |
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$ |
18,344 |
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