EARNINGS PER SHARE ("EPS") (Schedule of Earnings Per Share Reconciliation) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Basic EPS
Net income	$ 17,805	$ 18,254	$ 13,880	$ 16,947	$ 20,989	$ 19,734	$ 21,338	$ 17,918	$ 66,886	$ 79,980	$ 58,370
Basic weighted average shares (in shares)									25,364,000	25,077,000	25,451,000
Basic income per share (in dollars per share)	$ 0.71	$ 0.73	$ 0.55	$ 0.66	$ 0.82	$ 0.79	$ 0.86	$ 0.71	$ 2.64	$ 3.19	$ 2.29
Diluted EPS
Net income	$ 17,805	$ 18,254	$ 13,880	$ 16,947	$ 20,989	$ 19,734	$ 21,338	$ 17,918	$ 66,886	$ 79,980	$ 58,370
Basic weighted average shares (in shares)									25,364,000	25,077,000	25,451,000
Net effect of common stock equivalents (in shares)									431,000	519,000	612,000
Diluted weighted average shares (in shares)									25,795,000	25,596,000	26,063,000
Diluted income per share (in dollars per share)	$ 0.69	$ 0.72	$ 0.54	$ 0.65	$ 0.81	$ 0.77	$ 0.85	$ 0.70	$ 2.59	$ 3.12	$ 2.24
Stock options excluded from computation of weighted average shares outstanding									700,000	1,200,000	900,000