Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Income (loss) from continuing operations	$ 31,285	$ (95,958)
Loss from discontinued operations	(373)	(329)
Net income (loss)	30,912	(96,287)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization	7,307	8,045
Provision for allowance for doubtful accounts	986	52
Inventory lower-of-cost-or-market/NRV adjustments	2,119	692
Stock-based compensation expense	2,500	56
Loss on asset dispositions	980	1,127
Loss on debt extinguishment	230	0
Loss on disposal group, goodwill and other intangible impairment charge	20,668	72,008
Deferred income taxes, net of valuation allowance	1,144	(9,301)
Other	(1,411)	(115)
Changes in operating assets and liabilities:
Trade receivables	(19,108)	15,079
Inventories	8,598	18,284
Prepaids and other assets	1,066	4,168
Income taxes receivable	(6,129)	2,906
Trade payables	12,324	(48,973)
Accrued liabilities and other liabilities, including warranty obligations	7,746	(3,325)
Net cash provided by (used in) operating activities	69,932	(35,584)
Cash flows from investing activities:
Proceeds from sales and maturities of available-for-sale securities	0	25,271
Purchases of property, plant and equipment	(7,962)	(6,630)
Purchases of other investments in non-controlled affiliates	0	(3,500)
Net cash (used in) provided by investing activities	(7,962)	15,141
Cash flows from financing activities:
Proceeds from long-term debt	45,285	20,218
Payments on long-term debt	(43,852)	(31,667)
Payments of debt issuance costs	(1,823)	0
Proceeds from employee stock purchases	83	168
Proceeds from exercise of stock options	47	75
Tax payments related to stock award issuances	(887)	(107)
Net cash used in financing activities	(1,147)	(11,313)
Effect of exchange rate changes on cash and cash equivalents	484	(613)
Increase (decrease) in cash, cash equivalents and restricted cash	61,307	(32,369)
Less: Net change in cash balances classified as assets held-for-sale	(108)	0
Net change in cash, cash equivalents and restricted cash	61,199	(32,369)
Cash, cash equivalents and restricted cash:
Cash and cash equivalents at beginning of period	11,070	38,125
Cash, cash equivalents and restricted cash at end of period	72,269	5,756
Supplemental disclosure of cash flow information:
Cash paid for interest	704	963
Cash paid (received) for income taxes, net	5,670	(2,203)
Supplemental disclosure of non-cash investing activities:
Capital expenditures incurred but not yet paid	989	415
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Consolidated Condensed Balance Sheets to the total of the same amounts shown above:
Total cash, cash equivalents and restricted cash	$ 72,269	$ 5,756