Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities
Net income	$ 30,277	$ 49,689
Adjustments to reconcile to net cash provided by operations:
Depreciation, depletion and amortization	47,423	53,547
Amortization of debt issue costs	893	985
Pension expense, net of unfunded benefits paid	5,541	4,575
Charge for impairment of intangible asset	1,200	3,262
Charge for environmental matter	10,000
Deferred income tax benefit	(2,043)	(4,434)
Gains on dispositions of plant, equipment and timberlands, net	(2,888)	(3,881)
Share-based compensation	5,502	5,811
Change in operating assets and liabilities
Accounts receivable	(21,572)	(35,528)
Inventories	(5,714)	(19,982)
Prepaid and other current assets	420	(2,367)
Accounts payable	5,561	(25,576)
Accruals and other current liabilities	797	(6,214)
Environmental matters	(5,617)	(39)
Other	743	1,532
Net cash provided by operating activities	70,523	21,380
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(74,280)	(47,036)
Proceeds from disposals of plant, equipment and timberlands, net	3,181	4,051
Acquisition, net of cash acquired	(224)
Other	(1,600)	(600)
Net cash used by investing activities	(72,923)	(43,585)
Financing activities
Net repayments of revolving credit facility		(30,720)
Payments of borrowing costs	(1,329)
Repayment of term loans	(3,387)
Proceeds from term loans		12,592
Repurchases of common stock		(12,180)
Payments of dividends	(15,215)	(13,935)
Payments related to share-based compensation awards and other	(2,015)	(1,764)
Net cash used by financing activities	(21,946)	(46,007)
Effect of exchange rate changes on cash	(1,826)	(1,015)
Net decrease in cash and cash equivalents	(26,172)	(69,227)
Cash and cash equivalents at the beginning of period	99,837	122,882
Cash and cash equivalents at the end of period	73,665	53,655
Cash paid for:
Interest, net of amounts capitalized	8,943	9,959
Income taxes, net	$ 14,566	$ 19,928