Significant Accounting Policies 1 (Details)	12 Months Ended
	Mar. 31, 2017
Building and Improvements | Minimum
Property and Equipment
Property and equipment, Estimated useful life (in years)	5 years
Building and Improvements | Maximum
Property and Equipment
Property and equipment, Estimated useful life (in years)	39 years
Remaining Property and Equipment | Minimum
Property and Equipment
Property and equipment, Estimated useful life (in years)	3 years
Remaining Property and Equipment | Maximum
Property and Equipment
Property and equipment, Estimated useful life (in years)	7 years