Organization Organization Text Tags (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Mar. 31, 2003	Mar. 31, 2018	Sep. 17, 2003	Oct. 24, 1994
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Common Stock, Shares Issued (in shares)	3,700,608	3,700,608		3,698,031		2,314,375
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01		$ 0.01		$ 0.01
subordinated debt issued 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%
Debt Instrument, Interest Rate During Period	5.38%
Accrued interest expense subordinated debt	$ 1.3	$ 1.3