Revolving Credit Facilities and Mortgage Payable - Mortgage (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2014	Mar. 31, 2019	Mar. 31, 2018
Debt Instrument [Line Items]
Short-term borrowings		$ (603)	$ (578)
Mortgage payable		30,901	$ 31,504
Mortgages
Debt Instrument [Line Items]
Debt instrument face amount	$ 33,931
Long-term debt gross		31,504
Short-term borrowings		(603)
Mortgage payable		$ 30,901
Fixed interest rate	4.928%
Debt amortization period	30 years
Balloon payment to be paid	$ 23,695
Term for minimum payments		5 years
Annual principal payment		$ 3,354