Income taxes. (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Income before income taxes:
U.S.	$ 12,168	$ 14,397	$ 3,001
Foreign	9,034	7,564	3,704
Income before taxes	21,202	21,961	6,705
Current
Federal	2,953	(780)	10,685
State	1,646	1,464	792
Foreign	1,968	1,160	1,345
Total current provision	6,567	1,844	12,822
Deferred
Federal	448	(1,350)	(25,418)
State	(302)	(68)	158
Foreign	2	(145)	(285)
Total deferred benefit	148	(1,563)	(25,545)
Total provision (benefit) for income taxes	$ 6,715	$ 281	$ (12,723)