Organization Organization Text Tag (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2003	Mar. 31, 2017	Sep. 17, 2003	Oct. 24, 1994
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Common Stock, Shares Issued (in shares)	3,698,031		3,698,031		2,314,375
Common Stock, Par Value (in dollars per share)	$ 0.01		$ 0.01		$ 0.01
subordinated debt issued shares (in shares)				13,000
Liquidation amount subordinated debt (in dollars per share)				$ 1,000
Proceeds from Issuance of Long-term Debt		$ 13.0
Proceeds from (Payments for) Other Financing Activities		0.4
Payments for Repurchase of Trust Preferred Securities		$ 13.4
Debt Instrument, Basis Spread on Variable Rate	3.05%