Savings and Retirement Plans (Details) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Savings and Retirement Plans [Abstract]
Employer discretionary contribution amount to U.S. plan	$ 70,000	$ 72,000
Defined Benefit Plans, Net Periodic Retirement Cost [Abstract]
Gross service cost	36,000	36,000
Interest cost	24,000	37,000
Expected return on assets	(19,000)	(27,000)
Amortization	7,000	1,000
Net periodic retirement cost	$ 48,000	$ 47,000