CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
OPERATING ACTIVITIES
Net income/(loss)	$ (2,120)	$ 11,177	$ 10,119	$ 21,870
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation	13,373	14,276	26,897	28,383
Amortization	1,811	1,821	3,641	3,622
Change in long-term liabilities, deferred taxes and other credits	(5,920)	2,946	(6,197)	2,732
Provision for write-off of property, plant and equipment	$ 263	728	415	729
Gain on disposition or involuntary conversion of assets		(961)	(1,056)	(961)
Excess tax benefit of options exercised	$ (342)	(106)	(603)	(145)
Compensation and benefits paid or payable in Class A Common Stock	419	405	995	947
Changes in operating assets and liabilities that provide/(use) cash:
Accounts receivable	4,212	3,333	(9,487)	14,297
Inventories	(4,061)	(1,963)	(7,131)	(10,959)
Prepaid expenses and other current assets	1,715	1,762	(990)	(386)
Income taxes prepaid and receivable	(158)	(7)	(74)	14
Accounts payable	(4,853)	555	(1,341)	(739)
Accrued liabilities	(933)	170	(2,520)	(12,679)
Income taxes payable	475	651	77	(1,059)
Other, net	7,062	(2,098)	4,607	(4,129)
Net cash provided by operating activities	10,943	32,689	17,352	41,537
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(18,455)	(12,799)	(30,666)	(27,402)
Purchased software	$ (304)	(21)	(337)	(315)
Proceeds from sale or involuntary conversion of assets		961	2,797	961
Net cash used in investing activities	$ (18,759)	(11,859)	(28,206)	(26,756)
FINANCING ACTIVITIES
Proceeds from borrowings	24,346	235	39,620	4,670
Principal payments on debt	(4,303)	$ (17,593)	(9,746)	$ (24,109)
Debt acquisition costs	(1,630)		(1,630)
Proceeds from options exercised	1,039	$ 261	1,724	$ 387
Excess tax benefit of options exercised	342	106	603	145
Dividends paid	(5,107)	(4,774)	(10,205)	(9,539)
Net cash provided by/(used in) financing activities	14,687	(21,765)	20,366	(28,446)
Effect of exchange rate changes on cash and cash equivalents	4,765	(608)	(6,840)	(2,165)
Increase/(decrease) in cash and cash equivalents	11,636	(1,543)	2,672	(15,830)
Cash and cash equivalents at beginning of period	170,838	208,379	179,802	222,666
Cash and cash equivalents at end of period	$ 182,474	$ 206,836	$ 182,474	$ 206,836