SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) - Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 03, 2016	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Apr. 03, 2016	Mar. 29, 2015	Mar. 30, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 189,361	$ 177,610	$ 169,498	$ 160,907	$ 158,350	$ 151,160	$ 137,093	$ 126,302	$ 697,376	$ 572,905	$ 484,779
Gross profit	107,963	107,911	106,546	99,234	98,055	91,364	81,876	74,009	421,654	345,304	272,902
Net income from continuing operations	81,611	32,545	42,423	38,720	40,383	32,841	24,246	17,111	195,299	114,581	111,313
Net loss from discontinued operations	0	0	0	(562)	(1,117)	(14,483)	(9,804)	4,732	(562)	(20,672)	(22,949)
Net income	$ 81,611	$ 32,545	$ 42,423	$ 38,158	$ 39,266	$ 18,358	$ 14,442	$ 21,843	$ 194,737	$ 93,909	$ 88,364
Basic net income per share - continuing operations (in dollars per share)	$ 0.61	$ 0.23	$ 0.29	$ 0.26	$ 0.27	$ 0.22	$ 0.16	$ 0.11	$ 1.37	$ 0.77	$ 0.74
Basic net income (loss) per share - discontinued operations (in dollars per share)					(0.01)	(0.10)	(0.06)	0.04	0.00	(0.14)	(0.15)
Basic net income (loss) per share (in dollars per share)	0.61	0.23	0.29	0.26	0.26	0.12	0.10	0.15	1.37	0.63	0.59
Diluted net income per share - continuing operations (in dollars per share)	0.59	0.22	0.28	0.25	0.26	0.21	0.16	0.11	1.32	0.74	0.73
Diluted net income (loss) per share - discontinued operations (in dollars per share)					(0.01)	(0.09)	(0.07)	0.03	0.00	(0.13)	(0.15)
Diluted net income (loss) per share (in dollars per share)	$ 0.59	$ 0.22	$ 0.28	$ 0.25	$ 0.25	$ 0.12	$ 0.09	$ 0.14	$ 1.32	$ 0.61	$ 0.58