Restructuring - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Apr. 04, 2017	Mar. 31, 2018	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated, period percent	8.00%
Restructuring charges	$ 1,500
Restructuring and impairment			$ 1,527
Executive Officer
Restructuring Cost and Reserve [Line Items]
Period of post employment salary	18 months
Share multiplier, unpaid cash owed percentage			120.00%
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	$ 1,300		$ 1,300
Employee Severance [Member] | Executive Officer
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment			500
Facility exit and Relocation costs
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment			$ 202
Incurred restructuring cost	$ 200	$ 200