Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net loss	$ (18,906)	$ (35,211)
Loss from discontinued operations, net of tax	(13,621)	(33,200)
Loss from continuing operations	(5,285)	(2,011)
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) operating activities:
Depreciation and amortization	9,091	7,380
Amortization of deferred financing costs	376	308
Loss (gain) on sale of assets	401	(29)
Stock compensation expense	9,679	8,591
Deferred income tax benefit	(8,290)	(6,309)
Reduction in tax benefit related to share-based awards	915	883
Changes in current assets and liabilities:
Accounts receivable, net	(8,704)	(7,572)
Inventories	(12,213)	(2,959)
Income taxes receivable	9,254	(13,687)
Other current assets	12,649	(51)
Accounts payable	(8,262)	5,959
Accrued liabilities	1,561	10,434
Income taxes payable	0	(1,807)
Interest payable	6	45
Net cash provided by (used in) operating activities	1,178	(825)
Cash flows from investing activities:
Capital expenditures	(6,155)	(10,618)
Proceeds from sales of businesses	18,490	0
Proceeds from sale of assets	321	38
Payments for acquisition, net of cash acquired	0	(7,863)
Purchase of patents and other intangible assets	(817)	(311)
Net cash provided by (used in) investing activities	11,839	(18,754)
Cash flows from financing activities:
Repayments of indebtedness	(9,833)	(15,398)
Borrowings on revolving credit facility	310,021	256,738
Repayments on revolving credit facility	(307,998)	(249,324)
Debt issuance costs	(106)	(147)
Reduction in tax benefit related to share-based awards	0	(883)
Purchase of treasury stock related to share-based awards	(1,500)	(925)
Proceeds from sale of common stock	530	30,610
Repurchase of common stock	(4,174)	0
Proceeds from exercise of stock options	21	134
Net cash (used in) provided by financing activities	(13,039)	20,805
Discontinued operations:
Net cash used in operating activities	(695)	(82)
Net cash provided by investing activities	708	74
Net cash flows provided by (used in) discontinued operations	13	(8)
Effect of changes in exchange rates on cash and cash equivalents	128	48
Net increase in cash and cash equivalents	119	1,266
Cash and cash equivalents at the beginning of period	4,823	2,208
Cash and cash equivalents at the end of period	$ 4,942	$ 3,474