CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES
Net income/(loss)	$ 10,101	$ (2,120)	$ 23,417	$ 10,119
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation	15,142	13,373	28,266	26,897
Amortization	2,817	1,811	4,513	3,641
Change in other noncurrent liabilities	(3,371)	8	(6,007)	(1,544)
Change in deferred taxes and other liabilities	(1,457)	(5,928)	1,072	(4,653)
Provision for write-off of property, plant and equipment	484	263	1,076	415
Gain on disposition of assets				(1,056)
Excess tax benefit of options exercised	(39)	(342)	(105)	(603)
Compensation and benefits paid or payable in Class A Common Stock	668	419	1,532	995
Changes in operating assets and liabilities that provide/(use) cash, net of impact of business acquisition:
Accounts receivable	(10,384)	4,212	(11,286)	(9,487)
Inventories	(6,027)	(4,061)	(7,375)	(7,131)
Prepaid expenses and other current assets	2,561	1,715	(2,821)	(990)
Income taxes prepaid and receivable	3,732	(158)	1,837	(74)
Accounts payable	1,267	(4,853)	2,899	(1,341)
Accrued liabilities	689	(933)	(8,154)	(2,520)
Income taxes payable	2,903	475	(933)	77
Other, net	(477)	7,062	(5,278)	4,607
Net cash provided by operating activities	18,609	10,943	22,653	17,352
INVESTING ACTIVITIES
Purchase of business, net of cash acquired	(187,000)		(187,000)
Purchases of property, plant and equipment	(20,112)	(18,455)	(28,105)	(30,666)
Purchased software	(589)	(304)	(671)	(337)
Proceeds from sale or involuntary conversion of assets	1,736		1,736	2,797
Net cash used in investing activities	(205,965)	(18,759)	(214,040)	(28,206)
FINANCING ACTIVITIES
Proceeds from borrowings	207,134	24,346	219,530	39,620
Principal payments on debt	(426)	(4,303)	(22,824)	(9,746)
Debt acquisition costs	(1,571)	(1,630)	(1,771)	(1,630)
Swap termination payment	(5,175)		(5,175)
Proceeds from options exercised	185	1,039	390	1,724
Excess tax benefit of options exercised	39	342	105	603
Dividends paid	(5,454)	(5,107)	(10,897)	(10,205)
Net cash provided by financing activities	194,732	14,687	179,358	20,366
Effect of exchange rate changes on cash and cash equivalents	(966)	4,765	2,941	(6,840)
Increase/(decrease) in cash and cash equivalents	6,410	11,636	(9,088)	2,672
Cash and cash equivalents at beginning of period	169,615	170,838	185,113	179,802
Cash and cash equivalents at end of period	$ 176,025	$ 182,474	$ 176,025	$ 182,474