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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Cash flows from operating activities:    
Net loss $ (14,180) $ (8,912)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation 4,651 $ 6,075
Impairment of goodwill 5,282  
Amortization of intangible assets 280 $ 275
Provision for doubtful accounts (113) (224)
Amortization of debt issuance costs 136 220
Deferred income taxes $ 888 851
Loss on sale of business   12,083
Stock based compensation expense $ 1,133 1,185
Adjustments to contingent consideration 62 (877)
Other, net (53) 177
Changes in operating assets and liabilities:    
Trade and other receivables, net 27,052 $ 19,658
Insurance settlements 2,625  
Costs and estimated earnings in excess of billings on uncompleted contracts, net (5,849) $ 3,005
Inventories 21,931 13,296
Refundable income taxes (2,084) (5,260)
Prepaid expenses and other assets 667 284
Accounts payable (356) (3,521)
Accrued and other liabilities (307) (5,080)
Net cash provided by operating activities 41,765 33,235
Cash flows from investing activities:    
Additions to property and equipment (6,016) (9,005)
Proceeds from sale of business 4,300 31,609
Collections on notes receivable 1,080 47
Other investing activities 55 (25)
Net cash (used in) provided by investing activities (581) 22,626
Cash flows from financing activities:    
Tax withholdings related to net share settlements of restricted stock and performance stock awards $ (423) (1,283)
Payments on long-term debt   (6,357)
Borrowings on line of credit $ 56,250 111,581
Repayments on line of credit (94,785) (159,576)
Payments on capital lease obligations (2,084) (767)
Other financing activities 19 28
Net cash used in financing activities (41,023) (56,374)
Change in cash and cash equivalents 161 (513)
Cash and cash equivalents, beginning of period 527 588
Cash and cash equivalents, end of period 688 75
Non-Cash Investing Activity:    
Accrued property and equipment purchases $ 718 $ 940