CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2010	$ 23,003	$ 9,885	$ 137,125	$ (35,885)	$ (19,648)	$ 114,480
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income and comprehensive income			29,496			29,496
Dividends paid			(5,474)			(5,474)
Recognition of stock-based compensation expense		2,110				2,110
Exercise of stock options and vesting of RSU's		(4,782)				(4,782)
Tax benefit realized from exercise of stock options and vesting of RSU's		3,087				3,087
Common stock issued - compensation plans	334	(334)
Repurchase of 133,400 shares of common stock				(1,999)		(1,999)
Balance at Oct. 01, 2011	$ 23,337	$ 9,966	$ 161,147	$ (37,884)	$ (19,648)	$ 136,918