Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss	$ (248,191)	$ (19,518)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	23,184	23,425
Amortization of debt issuance costs	1,652	1,191
Goodwill impairment	239,699	0
Loss on extinguishment of debt and write-off of debt issuance costs	0	2,699
Share of net income/loss from joint venture, net of cash dividends received	271	(269)
Compensation expense from issuance of share-based awards	1,296	873
Deferred income taxes	(3,923)	(5,704)
Other	614	182
Changes in operating assets and liabilities:
Accounts receivable	1,760	(13,963)
Inventories	(2,507)	(5,625)
Accounts payable	3,584	7,236
Income taxes receivable and payable, net	(12,676)	1,579
Other	5,461	5,182
Net cash provided by (used in) operating activities	10,224	(2,712)
Cash flows from investing activities
Acquisition of property, plant and equipment	(11,260)	(14,073)
Proceeds from liquidation of short-term investment	0	(8,000)
Proceeds from sale of property, plant, and equipment	82	2,395
Other	0	(1)
Net cash provided by (used in) investing activities	(11,178)	(3,679)
Cash flows from financing activities
Cash paid for debt issuance or prepayment costs	(286)	(738)
Dividends paid	0	(2,947)
Proceeds from long-term debt	60,012	19,025
Repayment of long-term debt	(4,527)	(7,522)
Proceeds from (repayments of) short-term debt, net	(411)	1,982
Other	(888)	(924)
Net cash provided by (used in) financing activities	53,900	8,876
Effect of exchange rate changes on cash flows	(5,435)	(204)
Net change in cash and cash equivalents	47,511	2,281
Cash and cash equivalents at beginning of period	31,703	17,988
Cash and cash equivalents at end of period	$ 79,214	$ 20,269