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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Cash flows from operating activities: |  |
Net loss | $ (5,296) | $ (6,454)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Bad debt expense | 8 | 0
Depreciation and amortization | 2,749 | 4,700
Amortization of deferred revenue | (390) | (1,552)
Asset impairment, net of insurance recovery | 750 | 389
Gain on sale of assets | (12) | 0
Deferred income taxes | 0 | (3,035)
Compensation expense - restricted stock | 676 | 459
Changes in operating assets and liabilities: |  |
Contracts receivable and retainage, net | (1,494) | (892)
Contracts in progress | (9,136) | (3,551)
Prepaid expenses, inventory, and other current assets | 542 | 1,046
Accounts payable | 494 | (520)
Advance billings on contracts | (835) | 785
Deferred revenue | (1,068) | (4,162)
Deferred compensation | 409 | 196
Accrued expenses and other liabilities | (490) | (2,498)
Accrued contract losses | (1,298) | (235)
Current income taxes and other | 295 | 240
Net cash used in operating activities | (14,096) | (15,084)
Cash flows from investing activities: |  |
Capital expenditures | (71) | (391)
Proceeds from the sale of equipment | 309 | 0
Proceeds from insurance recoveries | 2,165 | 0
Net cash provided by (used in) investing activities | 2,403 | (391)
Cash flows from financing activities: |  |
Tax payments made on behalf of employees from withheld, vested shares of common stock | (787) | (880)
Payment of financing cost | (11) | 0
Payments of dividends on common stock | 0 | (149)
Proceeds received from borrowings under our Credit Agreement | 15,000 | 0
Repayment of borrowings under our Credit Agreement | (5,000) | 0
Net cash provided by (used in) financing activities | 9,202 | (1,029)
Net change in cash and cash equivalents | (2,491) | (16,504)
Cash and cash equivalents at beginning of period | 8,983 | 51,167
Cash and cash equivalents at end of period | $ 6,492 | $ 34,663

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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: 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=98514028&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Balance Type: | credit
Period Type: | duration

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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=98514028&loc=d3e3602-108585 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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