Business Segment Information (Details)		3 Months Ended
		Jun. 30, 2015 USD ($) Segment Customer	Jun. 30, 2014 USD ($)	Mar. 31, 2015 USD ($)
Business Segment Information [Abstract]
Number of operating markets | Segment		2
Number of operating segments | Segment		1
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues			$ 6,385,000
Long-lived assets		$ 1,970,000		$ 1,872,000
Number of major customers | Customer		0
United States [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues			4,533,000
Long-lived assets		$ 1,482,000		1,397,000
United Kingdom [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues			697,000
All Other Foreign Countries [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]		$ 1,155,000
Long-lived assets	[2]	$ 488,000		$ 475,000

[1] No other country accounts for 10% or more of the consolidated net sales.

[2] Substantially all maintained in The Netherlands.