Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Goodwill	$ 0	$ 0	$ 0	$ 4,409,000
Goodwill impairment charge			4,409,000
Impairment write-off of intangible assets		$ 250,000
Intangible assets, useful life		6 years 1 day
Patents
Segment Reporting Information [Line Items]
Impairment write-off of intangible assets		$ 0	$ 78,000	120,000
Trade name and trademarks
Segment Reporting Information [Line Items]
Impairment write-off of intangible assets		$ 250,000
U.S. Markets | Operating Segments
Segment Reporting Information [Line Items]
Goodwill				2,371,000
Goodwill impairment charge	2,371,000
Engineered Systems | Operating Segments
Segment Reporting Information [Line Items]
Goodwill				$ 2,038,000
Goodwill impairment charge	$ 2,038,000