CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
OPERATING ACTIVITIES
Net income	$ 13,316	$ 12,239
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,124	13,524
Amortization	1,696	1,830
Change in other noncurrent liabilities	(2,636)	(1,552)
Change in deferred taxes and other liabilities	2,529	1,275
Provision for write-off of property, plant and equipment	$ 592	152
Gain on disposition of assets		(1,056)
Excess tax benefit of options exercised	$ (66)	(261)
Compensation and benefits paid or payable in Class A Common Stock	864	576
Changes in operating assets and liabilities that provide/(use) cash:
Accounts receivable	(902)	(13,699)
Inventories	(1,348)	(3,070)
Prepaid expenses and other current assets	(5,382)	(2,705)
Income taxes prepaid and receivable	(1,895)	84
Accounts payable	1,632	3,512
Accrued liabilities	(8,843)	(1,587)
Income taxes payable	(3,836)	(398)
Other, net	(4,801)	(2,455)
Net cash provided by operating activities	4,044	6,409
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(7,993)	(12,211)
Purchased software	$ (82)	(33)
Proceeds from sale or involuntary conversion of assets		2,797
Net cash used in investing activities	$ (8,075)	(9,447)
FINANCING ACTIVITIES
Proceeds from borrowings	12,396	15,274
Principal payments on debt	(22,398)	$ (5,443)
Debt acquisition costs	(200)
Proceeds from options exercised	205	$ 685
Excess tax benefit of options exercised	66	261
Dividends paid	(5,443)	(5,098)
Net cash (used in)/provided by financing activities	(15,374)	5,679
Effect of exchange rate changes on cash and cash equivalents	3,907	(11,605)
Decrease in cash and cash equivalents	(15,498)	(8,964)
Cash and cash equivalents at beginning of period	185,113	179,802
Cash and cash equivalents at end of period	$ 169,615	$ 170,838