CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015
Income Statement [Abstract]
Net revenues	$ 220,253	$ 219,693	$ 430,209	$ 433,106
Cost of goods sold	116,005	114,396	234,905	225,270
Gross profit	104,248	105,297	195,304	207,836
Operating expenses:
Research and development	8,336	11,553	19,773	22,874
Selling, general and administrative	71,118	74,565	158,618	162,177
Total operating expenses	79,454	86,118	178,391	185,051
Operating income	24,794	19,179	16,913	22,785
Interest and other expense, net	(1,962)	(2,606)	(4,139)	(4,615)
Income before provision for income taxes	22,832	16,573	12,774	18,170
Provision for income taxes	3,007	3,710	3,295	5,574
Net income	$ 19,825	$ 12,863	$ 9,479	$ 12,596
Net earnings (loss) per share - basic (in dollars per share)	$ 0.39	$ 0.25	$ 0.19	$ 0.25
Net earnings (loss) per share - diluted (in dollars per share)	$ 0.38	$ 0.25	$ 0.18	$ 0.24
Weighted average shares outstanding
Basic (in shares)	51,378	50,680	51,200	51,020
Diluted (in shares)	51,701	51,187	51,463	51,638
Comprehensive income (loss)	$ 19,037	$ (1,526)	$ 7,804	$ (4,153)