Summary of Significant Accounting Policies (Inventories) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Accounting Policies [Abstract]
Raw material and components, cost	$ 10,556	$ 9,150
Raw materials and components, obsolescence reserve	(1,052)	(677)
Raw materials and components	9,504	8,473
Work in process, cost	2,045	1,683
Work in process, obsolescence reserve	(119)	(94)
Work in process	1,926	1,589
Finished goods, cost	6,550	5,069
Finished goods, obsolescence reserve	(956)	(848)
Finished goods	5,594	4,221
Total cost	19,151	15,902
Total obsolescence reserve	(2,127)	(1,619)
Total	$ 17,024	$ 14,283