Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net income (loss)	$ (177,604)	$ 7,914	$ 21,554
(Income) loss from discontinued operations, net of tax benefits	177,156	(13,526)	(35,731)
Adjustments to reconcile to net cash provided by operations:
Depreciation, depletion and amortization	47,525	42,078	39,287
Amortization of debt issue costs and original issue discount	1,159	1,157	1,153
Deferred income tax benefit (provision)	(7,704)	12,003	(38,160)
(Gains) losses on dispositions of plant, equipment and timberlands, net	(3,256)	(197)	116
Share-based compensation	6,288	5,494	5,482
Change in operating assets and liabilities
Accounts receivable	(621)	(4,148)	(2,155)
Inventories	(32,138)	1,522	(4,992)
Prepaid and other current assets	(3,372)	(910)	(1,272)
Accounts payable	13,774	20,361	(544)
Accruals and other current liabilities	(23,984)	(16,690)	40,245
Other	(3,175)	(1,824)	6,095
Net cash (used) provided by operating activities	(5,952)	53,234	31,078
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(42,129)	(80,783)	(61,162)
Proceeds from disposals of plant, equipment and timberlands, net	3,462	218	29
Acquisition, net of cash acquired	(178,905)
Other investing	(68)	(243)	(800)
Net cash used by investing activities	(217,640)	(80,808)	(61,933)
Financing activities
Net borrowings (repayments) under revolving credit facility	(55,446)	109,436	2,891
Payments of borrowing costs			(136)
Proceeds from term loans			19,428
Repayment of term loans	(11,069)	(9,771)	(8,205)
Payments of dividends	(22,760)	(22,480)	(21,589)
Proceeds from government grants			2,000
Payments related to share-based compensation awards and other	(2,151)	(472)	(990)
Net cash provided (used) by financing activities	(91,426)	76,713	(6,601)
Effect of exchange rate changes on cash	(5,564)	7,244	(2,063)
Net increase (decrease) in cash and cash equivalents	(320,582)	56,383	(39,519)
Change in cash and cash equivalents from discontinued operations	347,048	4,392	(10,341)
Cash and cash equivalents at the beginning of period	116,219	55,444	105,304
Cash and cash equivalents at the end of period	142,685	116,219	55,444
Cash paid for:
Interest, net of amounts capitalized	15,760	13,934	13,235
Income taxes, net	$ 15,171	$ 9,336	$ 14,020