Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 147,657	$ 163,166
Cost of sales	105,273	99,702
Gross profit	42,384	63,464
Selling, general, and administrative, and other operating expenses	16,993	16,719
Operating profit	25,391	46,745
Other income (expense):
Interest income (expense), net	185	(44)
Foreign currency exchange loss, net	(12)	(435)
Other, net	(61)	(259)
Nonoperating expense, total	112	(738)
Income before income taxes	25,503	46,007
Income taxes	7,926	15,716
Net income	$ 17,577	$ 30,291
Earnings per share:
Basic	$ 0.76	$ 1.31
Diluted	$ 0.76	$ 1.31
Other information:
Dividends declared per common share (See Note 4)	$ 0.54	$ 0.48