Business Segment Information - Reconciliation of Total Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Income (loss):
Total income from reportable segments	$ (1,099)	$ (185)	$ (1,651)	$ (276)
Amortization of intangible assets	(33)	(84)	(66)	(169)
Other expense, net	2	(2)	(5)	(6)
Interest income, net	3	4	5	5
Loss from continuing operations before income taxes	(1,094)	(183)	(1,651)	(277)
Operating segments
Segment Income (loss):
Total income from reportable segments	2,487	3,119	5,534	6,160
Unallocated amounts
Segment Income (loss):
Corporate and other expenses	(3,553)	(3,220)	(7,119)	(6,267)
Amortization of intangible assets	(33)	(84)	(66)	(169)
Other expense, net	2	(2)	(5)	(6)
Interest income, net	3	4	5	5
Loss from continuing operations before income taxes	$ (1,094)	$ (183)	$ (1,651)	$ (277)