Notes Payable and Long-Term Debt - Mortgage (Details) - USD ($)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Short-term borrowings	$ 67,475,000	$ 5,383,000
Mortgage payable	32,631,000	$ 33,154,000
Mortgages
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 33,900,000
Long-term Debt, Gross	33,200,000
Short-term borrowings	600,000
Mortgage payable	$ 32,600,000
Debt Instrument, Interest Rate, Stated Percentage	4.928%
Debt Instrument, Amortization Period	30 years
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid	$ 23,400,000
Debt Instrument, Term for Minimum Payments	5 years
Debt Instrument, Annual Principal Payment	$ 2,900,000