Consolidated Statements Of Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Earnings [Abstract]
Net sales	$ 431,021	$ 479,000	$ 478,468
Cost of sales	337,262	365,426	368,376
Gross profit	93,759	113,574	110,092
Selling and general expenses	19,775	16,492	18,745
Operating profit	73,984	97,082	91,347
Other income, principally interest	1,041	2,273	3,050
Earnings before provision for income taxes	75,025	99,355	94,397
Provision for income taxes	27,057	35,824	31,821
Net earnings	$ 47,968	$ 63,531	$ 62,576
Weighted average common shares outstanding:
Basic	6,871	6,862	6,854
Diluted	6,872	6,862	6,854
Net earnings per share:
Basic	$ 6.98	$ 9.26	$ 9.13
Diluted	$ 6.98	$ 9.26	$ 9.13

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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