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SUMMARY OF QUARTERLY DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended							6 Months Ended	12 Months Ended
	Mar. 30, 2019	Dec. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Sep. 29, 2018	Mar. 30, 2019	Mar. 31, 2018	Apr. 01, 2017
Quarterly Financial Data [Abstract]
Net revenues	$ 249,295	$ 247,356	$ 229,347	$ 233,552	$ 234,043	$ 225,377	$ 210,951	$ 241,581	$ 967,579	$ 903,923	$ 886,116
Gross profit	111,210	111,175	83,244	104,386	111,295	104,562	91,665	111,907	417,536	411,908	378,494
Operating income	23,856	28,320	5,293	14,275	1,013	24,258	16,611	26,076	83,545	56,157	(19,381)
Net (loss) income	$ 20,835	$ 18,277	$ (2,819)	$ 11,880	$ (6,547)	$ 20,102	$ 20,137	$ 18,726	$ 55,019	$ 45,572	$ (26,268)
Per share data:
Basic income (loss) per share (in dollars per share)	$ 0.41	$ 0.36	$ (0.05)	$ 0.22	$ (0.12)	$ 0.38	$ 0.38	$ 0.36	$ 1.07	$ 0.86	$ (0.51)
Diluted income (loss) per share (in dollars per share)	$ 0.40	$ 0.35	$ (0.05)	$ 0.22	$ (0.12)	$ 0.38	$ 0.38	$ 0.35	$ 1.04	$ 0.85	$ (0.51)
Overstatement of Operating Income				$ 2,835
Overstatement of Net Income				$ 2,426

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