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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Operating activities: |  |  |
Net (loss) income | $ (25,364) | $ 15,320 | $ 7,232
Adjustments to reconcile net (loss) income to net cash provided by operating activities: |  |  |
Depreciation | 26,204 | 26,436 | 25,087
Asset impairment | 7,202 | 3,200 | 0
Allowance for doubtful accounts | 448 | 3,168 | 887
(Loss) gain on the sale of assets | (10) | 86 | 353
Deferred income taxes | (14,061) | 8,264 | 3,788
Stock-based compensation expense | 2,707 | 1,139 | 672
Excess tax benefits from share-based payment arrangements | 0 | 0 | (116)
Changes in operating assets and liabilities: |  |  |
Contracts receivable, net | 31,792 | 14,963 | (55,353)
Contract retainage | (52) | 111 | 1,187
Costs and estimated earnings in excess of billings on uncompleted contracts | 14,167 | (2,262) | 1,590
Billings in excess of costs and estimated earnings on uncompleted contracts | (11,685) | (16,240) | 9,418
Accounts payable | (26,668) | (25,782) | 16,569
Prepaid subcontractor costs | 0 | 0 | 33,145
Prepaid expenses and other assets | 1,092 | 352 | (385)
Inventory | 931 | 1,189 | (6,325)
Accrued contract losses | 8,678 | 817 | (3,790)
Accrued employee costs | (971) | (154) | 1,854
Accrued expenses | (4,410) | 1,488 | (1,462)
Current income taxes | 615 | 15 | 3,652
Net cash provided by operating activities | 10,615 | 32,110 | 38,003
Cash flows from investing activities: |  |  |
Capital expenditures, net | (6,018) | (27,658) | (21,353)
Proceeds on the sale of equipment | 11 | 929 | 551
Net cash used in investing activities | (6,007) | (26,729) | (20,802)
Cash flows from financing activities: |  |  |
Borrowings against notes payable | 0 | 22,000 | 45,000
Payments on notes payable | 0 | (22,000) | (45,000)
Proceeds from exercise of stock options | 0 | 0 | 203
Excess tax benefit from share-based payment arrangements | 0 | 0 | 116
Payments of dividends on common stock | (5,865) | (5,865) | (5,839)
Net cash used in financing activities | (5,865) | (5,865) | (5,520)
Net (decrease) increase in cash and cash equivalents | (1,257) | (484) | 11,681
Cash and cash equivalents at beginning of period | 36,085 | 36,569 | 24,888
Cash and cash equivalents at end of period | 34,828 | 36,085 | 36,569
Supplemental cash flow information: |  |  |
Interest paid | 165 | 169 | 843
Income taxes (received) paid, net of payments (refunds) | (152) | 225 | 3,138
Schedule of noncash financing activities |  |  |
Reclassification of property, plant and equipment to assets held for sale | 4,805 | 0 | 14,527
Reclassification of assets held for sale to inventory | $ 3,727 | $ 0 | $ 0

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- Definition The cash inflow from sale of machinery and equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Nonrecurring impairment charges related to the write-off of production-related equipment and inventory. This tag is used when an Entity charges this cost to cost of goods sold. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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