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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash flows from operating activities:      
Net income (loss) $ 20,312 [1] $ (10,163) $ (9,263)
Loss on discontinued operations (1,771) (2,522)
Income (loss) from continuing operations 20,312 (8,392) (6,741)
Adjustments to reconcile income (loss) from continuing operations to net cash provided by (used in) operating activities:      
Bargain purchase gain (20,080)
Depreciation and capital lease amortization 8,767 6,060 8,768
Gain on sale of facilities (2,960) (7,860)
Amortization of intangible assets 550 495 523
Amortization of debt issuance costs 151 168 166
Provision for doubtful accounts 429 638 289
Deferred income taxes (3,847) (341) (4,750)
(Gain) loss on disposal of property and equipment 222 (51) 19
Share-based compensation expense 281 1,200 1,809
Adjustments to contingent consideration 27 (1,657)
Unrealized (gain) loss on foreign currency forward contracts (137) 90 170
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities:      
Trade and other receivables 2,220 (4,073) 80
Contract assets, net (17,809) (278) 447
Inventories (13,628) 1,543 5,728
Refundable income taxes (146) (77) 3,254
Prepaid expenses and other assets 3,056 (138) (630)
Accounts payable 6,592 2,128 1,048
Accrued and other liabilities (2,373) (4,792) (2,456)
Net cash used in operating activities from continuing operations (18,400) (5,793) (1,793)
Net cash provided by (used in) operating activities from discontinued operations (1,727) 3,312
Net cash provided by (used in) operating activities (18,400) (7,520) 1,519
Cash flows from investing activities:      
Acquisition of business, net of cash acquired (37,223)
Additions to property and equipment (3,797) (2,851) (2,292)
Proceeds from sale of facilities 8,515 13,914
Proceeds from sale of property and equipment 141 146 33
Net cash provided by (used in) investing activities from continuing operations (32,364) (2,705) 11,655
Net cash provided by investing activities from discontinued operations 4,465 32,505
Net cash provided by (used in) investing activities (27,899) 29,800 11,655
Cash flows from financing activities:      
Tax withholdings related to net share settlements of restricted stock and performance share awards (1,301) (24) (31)
Borrowings on line of credit 29,904
Repayments on line of credit (18,440)
Payments of debt issuance costs (435)
Payments on capital lease obligations (398) (327) (279)
Payments of contingent consideration (112) (1,233)
Net cash provided by (used in) financing activities from continuing operations 9,330 (463) (1,543)
Net cash used in financing activities from discontinued operations (111)
Net cash provided by (used in) financing activities 9,330 (463) (1,654)
Change in cash and cash equivalents (36,969) 21,817 11,520
Cash and cash equivalents, beginning of period 43,646 21,829 10,309
Cash and cash equivalents, end of period 6,677 43,646 21,829
Supplemental disclosure of cash flow information:      
Cash paid during the period for interest, net of amounts capitalized 330 258 283
Cash paid (received) during the period for income taxes (net of refunds of $1, $213 and $3,427) 170 (153) (3,322)
Noncash investing and financing activities:      
Accrued property and equipment purchases 336 184 59
Capital lease additions 599 455 259
Proceeds from sale of facility placed in escrow $ 4,465
[1] Net income for the third quarter of 2018 includes a preliminary bargain purchase gain of $21.9 million. Net income for the fourth quarter of 2018 includes a measurement period adjustment of $1.8 million to decrease the bargain purchase gain.