Share-Based Compensation (Allocated Share-Based Compensation) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Total, pre-tax	$ 1,011	$ 1,938	$ 2,503	$ 3,322
Tax effect of share-based compensation	(384)	(736)	(951)	(1,262)
Total, net of tax	627	1,202	1,552	2,060
Restricted Stock [Member]
Total, pre-tax	1,405	2,106	3,080	3,831
Tax effect of share-based compensation	(534)	(800)	(1,170)	(1,456)
Total, net of tax	871	1,306	1,910	2,375
Restricted Stock [Member] | Cost of Goods Sold [Member]
Total, pre-tax	1,265	172	2,772	345
Restricted Stock [Member] | Selling, General and Administrative [Member]
Total, pre-tax	140	1,934	308	3,486
Restricted Stock Grants [Member]
Total, pre-tax		425		934
Tax effect of share-based compensation		(162)		(355)
Total, net of tax		263		579
Restricted Stock Grants [Member] | Cost of Goods Sold [Member]
Total, pre-tax		42		93
Restricted Stock Grants [Member] | Selling, General and Administrative [Member]
Total, pre-tax		383		841
Cash-Settled Restricted Stock Units [Member]
Total, pre-tax	285	109	1,038	210
Tax effect of share-based compensation	(108)	(41)	(394)	(80)
Total, net of tax	177	68	644	130
Cash-Settled Restricted Stock Units [Member] | Cost of Goods Sold [Member]
Total, pre-tax	257	11	934	21
Cash-Settled Restricted Stock Units [Member] | Selling, General and Administrative [Member]
Total, pre-tax	28	98	104	189
Cost of Goods Sold [Member]
Total, pre-tax	910	132	2,253	270
Selling, General and Administrative [Member]
Total, pre-tax	$ 101	$ 1,806	$ 250	$ 3,052