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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Cash flows from operating activities:    
Net loss $ (7,637) $ (5,936)
Loss on discontinued operations (973)
Loss from continuing operations (7,637) (4,963)
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) operating activities:    
Depreciation and capital lease amortization 3,168 2,961
Amortization of intangible assets 232 252
Amortization of debt issuance costs 84 84
Provision for doubtful accounts 42 323
Deferred income taxes (451) (1,088)
(Gain) loss on disposal of property and equipment 95 (101)
Share-based compensation expense 281 726
Adjustments to contingent consideration 27
Unrealized (gain) loss on foreign currency forward contracts (92) 62
Changes in operating assets and liabilities:    
Trade and other receivables 12,389 4,257
Contract assets, net (3,924) (541)
Inventories (1,516) (3,423)
Refundable income taxes (107) 81
Prepaid expenses and other assets 1,185 733
Accounts payable (1,882) 2,213
Accrued and other liabilities (1,244) (3,775)
Net cash provided by (used in) operating activities from continuing operations 623 (2,172)
Net cash used in operating activities from discontinued operations (732)
Net cash provided by (used) in operating activities 623 (2,904)
Cash flows from investing activities:    
Additions to property and equipment (1,640) (1,216)
Proceeds from sale of property and equipment 2 143
Net cash used in investing activities from continuing operations (1,638) (1,073)
Net cash provided by investing activities from discontinued operations 750
Net cash used in investing activities (888) (1,073)
Cash flows from financing activities:    
Tax withholdings related to net share settlements of restricted stock and performance share awards (1,301) (24)
Payments on capital lease obligations (193) (188)
Payments of contingent consideration (112)
Net cash used in financing activities from continuing operations (1,494) (324)
Change in cash and cash equivalents (1,759) (4,301)
Cash and cash equivalents, beginning of period 43,646 21,829
Cash and cash equivalents, end of period 41,887 17,528
Noncash investing and financing activities:    
Accrued property and equipment purchases 114 199
Capital lease additions $ 458