Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net loss	$ (2,102)	$ (1,373)
Adjustments to reconcile net loss to net cash provided by Operating activities:
Depreciation and amortization	10,654	11,263
Bad debt expense (recoveries)	11	(7)
Deferred income taxes	(1,160)	(911)
Stock-based compensation	1,315	782
Gain on sale of property and equipment	(100)	(176)
Change in operating assets and liabilities:
Accounts receivable	(11,135)	7,751
Income tax receivable	233	0
Inventory	(97)	(1,426)
Prepaid expenses and other	356	498
Costs and estimated earnings in excess of billings on uncompleted contracts	(932)	(5,700)
Accounts payable	6,282	(3,311)
Accrued liabilities	(946)	3,054
Income tax payable	(730)	(103)
Billings in excess of costs and estimated earnings on uncompleted contracts	(4,792)	(6,673)
Deferred revenue	(34)	(29)
Net cash (used in) provided by operating activities	(3,177)	3,639
Cash flows from investing activities:
Proceeds from sale of property and equipment	166	338
Purchase of land	0	(22,199)
Purchase of property and equipment	(7,533)	(10,718)
Net cash used in investing activities	(7,367)	(32,579)
Cash flows from financing activities:
Borrowings from Credit Facility	0	22,500
Payments made on borrowings from Credit Facility	(4,541)	(389)
Exercise of stock options	28	340
Purchase of shares into treasury	(3,101)	0
Net cash (used in) provided by financing activities	(7,614)	22,451
Net change in cash and cash equivalents	(18,158)	(6,489)
Cash and cash equivalents at beginning of period	38,893	40,859
Cash and cash equivalents at end of period	20,735	34,370
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	490	325
Taxes (net of refunds)	$ 434	$ 146