Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss	$ (5,518)	$ (6)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	19,609	21,134
Amortization of ROU operating leases	4,145	0
Amortization of ROU finance leases	1,733	0
Unamortized debt issuance costs upon debt modification	399	2,164
Amortization of deferred debt issuance costs	312	676
Deferred income taxes	44	(561)
Stock-based compensation	2,292	1,710
Gain on sale of property and equipment	(1,197)	(2,527)
Other gain from continuing operations	0	(5,448)
Change in operating assets and liabilities:
Accounts receivable	(35,242)	11,036
Notes receivable	415	0
Income tax receivable	(330)	(56)
Inventory	310	763
Prepaid expenses and other	1,674	3,410
Costs and estimated earnings in excess of billings on uncompleted contracts	(29,063)	(11,405)
Accounts payable	13,702	(14,266)
Accrued liabilities	1,245	(1,925)
Operating lease liabilities	(4,434)	0
Income tax payable	755	(256)
Billings in excess of costs and estimated earnings on uncompleted contracts	27,252	(9,395)
Other	0	(287)
Net cash used in operating activities	(1,897)	(5,239)
Cash flows from investing activities:
Proceeds from sale of property and equipment	1,363	2,320
Purchase of property and equipment	(13,035)	(15,043)
Contributions to CSV life insurance	(550)	(424)
Proceeds from return of investment	0	94
Insurance claim proceeds related to property and equipment	2,574	1,346
Net cash used in investing activities	(9,648)	(11,707)
Cash flows from financing activities:
Borrowings from Credit Facility	49,000	29,861
Payments made on borrowings from Credit Facility	(59,460)	(21,361)
Proceeds from sale-leaseback arrangement	18,210	0
Loan costs from Credit Facility	(1,430)	(861)
Payments of finance lease liabilities	(2,144)	0
Exercise of stock options	35	2,815
Net cash provided by financing activities	4,211	10,454
Net change in cash and cash equivalents	(7,334)	(6,492)
Cash and cash equivalents at beginning of period	8,684	9,086
Cash and cash equivalents at end of period	1,350	2,594
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	5,202	2,994
Taxes, net of refunds	$ 444	$ 472