Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities
Net income	$ 5,716	$ 11,603
Adjustments to reconcile to net cash provided by operations:
Depreciation, depletion and amortization	19,431	17,282
Amortization of debt issue costs and original issue discount	290	289
Pension expense, net of unfunded benefits paid	1,298	928
Deferred income tax provision (benefit)	(2,244)	1,704
(Gains) losses on dispositions of plant, equipment and timberlands, net	(1,554)	32
Share-based compensation	1,983	1,648
Change in operating assets and liabilities
Accounts receivable	(6,550)	(11,462)
Inventories	(7,795)	(9,907)
Prepaid and other current assets	(3,192)	1,670
Accounts payable	4,111	2,903
Accruals and other current liabilities	(5,286)	(8,874)
Other	1,451	(255)
Net cash provided by operating activities	7,659	7,561
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(26,568)	(36,783)
Proceeds from disposals of plant, equipment and timberlands, net	1,695
Other	(28)
Net cash used by investing activities	(24,901)	(36,783)
Financing activities
Net borrowings under revolving credit facility	25,388	38,236
Repayment of term loans	(2,902)	(2,190)
Payments of dividends	(5,679)	(5,455)
Payments related to share-based compensation awards and other	(965)	(112)
Net cash provided by financing activities	15,842	30,479
Effect of exchange rate changes on cash	2,458	526
Net increase in cash and cash equivalents	1,058	1,783
Cash and cash equivalents at the beginning of period	116,219	55,444
Cash and cash equivalents at the end of period	117,277	57,227
Cash paid for:
Interest, net of amounts capitalized	1,496	293
Income taxes, net	$ 2,956	$ 2,194