Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
(Loss) income from continuing operations	$ (87,228)	$ 9,147
Loss from discontinued operations	(215)	(160)
Net (loss) income	(87,443)	8,987	[1]
Adjustments to reconcile net (loss) income to cash (used in) provided by operating activities:
Depreciation and amortization	5,192	4,468
Provision (benefit) for allowance for doubtful accounts	52	(39)
Inventory lower-of-cost-or-market/NRV adjustments	491	179
Stock-based compensation (benefit) expense	(356)	747
Loss on asset dispositions	536	1
Goodwill and intangible impairment charge	72,008	0
Deferred income taxes, net of valuation allowance	(9,372)	1,323
Other	(108)	23
Changes in operating assets and liabilities:
Trade receivables	16,755	17,506
Inventories	16,457	10,821
Prepaids and other assets	2,329	(734)
Income taxes receivable	2,611	(4,115)
Trade payables	(56,234)	(20,659)
Accrued liabilities and other liabilities, including warranty obligations	(134)	(1,919)
Net cash (used in) provided by operating activities	(37,216)	16,589
Cash flows from investing activities:
Purchases of available-for-sale securities	0	(29,522)
Proceeds from sales and maturities of available-for-sale securities	25,271	26,815
Purchases of property, plant and equipment	(3,874)	(4,228)
Purchases of other investments in non-controlled affiliates	(3,500)	0
Net cash provided by (used in) investing activities	17,897	(6,935)
Cash flows from financing activities:
Proceeds from long-term debt	529	0
Payments on long-term debt	(11,667)	(8,000)
Payments for stock repurchases	0	(3,127)
Proceeds from employee stock purchases	168	0
Proceeds from exercise of stock options	75	492
Tax payments related to stock award issuances	(107)	(396)
Net cash used in financing activities	(11,002)	(11,031)
Effect of exchange rate changes on cash and cash equivalents	117	(587)
Decrease in cash and cash equivalents	(30,204)	(1,964)
Cash and cash equivalents:
Beginning of period	38,125	27,893
End of period	7,921	25,929
Supplemental disclosure of cash flow information:
Cash paid for interest	677	558
Cash (received) paid for income taxes, net	(2,324)	6,366
Supplemental disclosure of non-cash investing activities:
Capital expenditures incurred but not yet paid	$ 537	$ 437

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