Note 12 - Net Income (Loss) Per Share - Summary of Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 01, 2017	Dec. 27, 2015	Jan. 01, 2017	Dec. 27, 2015
Income (loss) from continuing operations	$ (281)	$ (2,045)	$ 7,345	$ (6,489)
Net income (loss) from discontinued operations (See Note 3)	45,660	(5,092)	47,982	(7,355)
Net income (loss)	$ 45,379	$ (7,137)	$ 55,327	$ (13,844)
Basic (in shares)	50,409	48,386	49,548	48,146
Effect of options and awards (in shares)	956		713
Diluted (in shares)	51,365	48,386	50,261	48,146
Net income (loss) per share from continuing operations:
Basic (in dollars per share)	$ (0.01)	$ (0.04)	$ 0.15	$ (0.13)
Diluted (in dollars per share)	(0.01)	(0.04)	0.15	(0.13)
Net income (loss) per share from discontinued operations:
Basic (in dollars per share)	0.91	(0.11)	0.97	(0.15)
Diluted (in dollars per share)	0.89	(0.11)	0.95	(0.15)
Net income (loss) per share:
Basic (in dollars per share)	0.90	(0.15)	1.12	(0.28)
Diluted (in dollars per share)	$ 0.88	$ (0.15)	$ 1.10	$ (0.28)
Continuing Operations [Member]
Basic (in shares)	50,409	48,386	49,548	48,146
Effect of options and awards (in shares)			713
Diluted (in shares)	50,409	48,386	50,261	48,146
Discontinued Operations [Member]
Basic (in shares)	50,409	48,386	49,548	48,146
Effect of options and awards (in shares)	956		713
Diluted (in shares)	51,365	48,386	50,261	48,146