Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net loss	$ (1,858)	$ (13,352)
Adjustments to reconcile net loss to net cash provided by (used in)
Depreciation and amortization	16,187	16,038
Deferred financing cost amortization	53	158
Bad debt expense (recoveries)	(2)	1
Deferred income taxes	(2,639)	(4,152)
Stock-based compensation	1,636	2,372
Gain on sale of property and equipment	(59)	(156)
Change in operating assets and liabilities:
Accounts receivable	1,078	(12,165)
Income tax receivable	195	11,347
Inventory	(1,105)	(197)
Note receivable	0	5
Prepaid expenses and other	1,803	668
Costs and estimated earnings in excess of billings on uncompleted contracts	(5,901)	2,906
Accounts payable	(4,877)	7,086
Accrued liabilities	(1,122)	994
Income tax payable	519	0
Billings in excess of costs and estimated earnings on uncompleted contracts, net	(1,726)	11,046
Deferred revenue	(43)	(43)
Net cash provided by (used in) operating activities	2,139	22,556
Cash flows from investing activities:
Proceeds from sale of property and equipment	191	349
Purchase of property and equipment	(11,751)	(22,344)
Net cash used in investing activities	(11,560)	(21,995)
Cash flows from financing activities:
Borrowings from Credit Facility	0	13,000
Payments made on borrowings from Credit Facility	(3,278)	(2,489)
Contributions from non-controlling interest	33	0
Exercise of stock options	737	176
Increase in loan costs	0	14
Net cash (used in) provided by financing activities	(2,508)	10,673
Net change in cash and cash equivalents	(11,929)	11,234
Cash and cash equivalents at beginning of period	43,084	38,979
Cash and cash equivalents at end of period	31,155	50,213
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	393	675
Taxes (net of refunds)	$ (267)	$ (14,138)