CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES
Net income	$ 13,409	$ 9,680	$ 36,826	$ 19,799
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	16,470	12,953	44,736	39,850
Amortization	1,975	1,790	6,488	5,431
Change in other noncurrent liabilities	(275)	(188)	(6,282)	(1,732)
Change in deferred taxes and other liabilities	(1,712)	7,322	(640)	2,669
Provision for write-off of property, plant and equipment	333	(156)	1,409	259
Gain on disposition of assets				(1,056)
Excess tax benefit of options exercised	(11)		(116)	(603)
Compensation and benefits paid or payable in Class A Common Stock	350	290	1,882	1,285
Fair value adjustment on available-for-sale securities		3,225		3,225
Changes in operating assets and liabilities that provide/(use) cash, net of impact of business acquisition:
Accounts receivable	4,794	5,100	(6,492)	(4,387)
Inventories	(5,511)	(3,626)	(12,886)	(10,757)
Prepaid expenses and other current assets	(481)	133	(3,302)	(857)
Income taxes prepaid and receivable	(100)	(518)	1,737	(592)
Accounts payable	(4,443)	(3,126)	(1,544)	(4,467)
Accrued liabilities	4,418	3,381	(3,736)	861
Income taxes payable	4,932	3,910	3,999	3,987
Other, net	(4,974)	1,723	(10,252)	6,330
Net cash provided by operating activities	29,174	41,893	51,827	59,245
INVESTING ACTIVITIES
Purchase of business, net of cash acquired			(187,000)
Purchases of property, plant and equipment	(21,924)	(9,023)	(50,029)	(39,689)
Purchased software	(591)	(252)	(1,262)	(589)
Proceeds from sale or involuntary conversion of assets	4,686		6,422	2,797
Net cash used in investing activities	(17,829)	(9,275)	(231,869)	(37,481)
FINANCING ACTIVITIES
Proceeds from borrowings	13,265	5,198	232,795	44,818
Principal payments on debt	(871)	(37,354)	(23,695)	(47,100)
Debt acquisition costs		(41)	(1,771)	(1,671)
Swap termination payment			(5,175)
Proceeds from options exercised	64	75	454	1,799
Excess tax benefit of options exercised	11		116	603
Dividends paid	(5,457)	(5,441)	(16,354)	(15,646)
Net cash provided by/(used in) financing activities	7,012	(37,563)	186,370	(17,197)
Effect of exchange rate changes on cash and cash equivalents	1,788	(5,749)	4,729	(12,589)
Increase/(decrease) in cash and cash equivalents	20,145	(10,694)	11,057	(8,022)
Cash and cash equivalents at beginning of period	176,025	182,474	185,113	179,802
Cash and cash equivalents at end of period	$ 196,170	$ 171,780	$ 196,170	$ 171,780