Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities
Net income (loss)	$ 331	$ (11,866)	$ (13,114)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	21,538	21,570	22,092
Deferred financing cost amortization	52	103	132
Bad debt expense (recoveries)	259	12	255
Deferred income taxes	(239)	(1,646)	5,192
Stock-based compensation	2,141	3,115	2,712
Loss on sale of property and equipment	153	1,822	60
Change in operating assets and liabilities:
Accounts receivable	4,571	(26,966)	26,135
Income tax receivable	2,125	10,888	(6,331)
Inventory	(3,024)	(497)	(370)
Note receivable	46	5	39
Prepaid expenses and other	(200)	(497)	(377)
Costs and estimated earnings in excess of billings on uncompleted contracts	(5,611)	(4,133)	10,991
Accounts payable	(6,405)	18,826	(12,970)
Accrued liabilities	(808)	2,803	(2,728)
Income tax payable	207	252	(262)
Billings in excess of costs and estimated earnings on uncompleted contracts, net	(1,774)	10,704	1,277
Deferred revenue	(58)	(57)	(57)
Net cash provided by operating activities	13,033	24,438	32,676
Cash flows from investing activities:
Proceeds from sale of property and equipment	750	374	841
Purchase of property and equipment	(12,760)	(24,647)	(14,894)
Net cash used in investing activities	(12,010)	(33,273)	(14,053)
Cash flows from financing activities:
Borrowings from Credit Facility	0	18,000
Payments made on borrowings from Credit Facility	(4,057)	(5,379)
Contributions from noncontrolling interest	(50)	34	0
Exercise of stock options	859	298	185
Excess tax benefit from stock option exercise	0	0	0
Increase in loan costs	0	(13)	0
Purchase of shares into treasury	0	0	(3,003)
Net cash (used in) provided by financing activities	(3,248)	12,940	(2,818)
Net change in cash and cash equivalents	(2,225)	4,105	15,805
Cash and cash equivalents at beginning of period	43,084	38,979	23,174
Cash and cash equivalents at end of period	40,859	43,084	38,979
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	483	697	212
Taxes (net of refunds)	(3,045)	(14,039)	(4,948)
Supplemental disclosure of non cash transaction:
Fair value of earnout from acquisition of business in Alaska	0	271	0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(271)	0	0
Acquisition of business in Alaska
Cash flows from investing activities:
Payments for acquisition of businesses	$ 0	$ (9,000)	$ 0