Stockholders' Equity Stockholders' Equity Text tags (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 1994	Dec. 31, 2011	Mar. 31, 2016	Mar. 31, 2015		Oct. 24, 1994
Stockholders' Equity Note [Abstract]
Common Stock, Shares, Issued				3,698,031	3,698,031		2,314,375
Common Stock, Par or Stated Value Per Share				$ 0.01	$ 0.01		$ 0.01
Share Price							$ 10
Proceeds from Issuance of Common Stock		$ 21.5
Tier One Leverage Capital Required for Capital Adequacy to Average Assets				4.00%	4.00%
Capital Required for Capital Adequacy to Risk Weighted Assets				8.00%	8.00%
OCC directive Tier 1 Leverage capital ratio				9.00%
OCC directive Total risk-based capital ratio				12.00%
Tier One Leverage Capital to Average Assets				9.22%	10.63%	[1]
Capital to Risk Weighted Assets				14.04%	16.48%	[2]
Tier One Risk Based Capital to Risk Weighted Assets				12.66%	14.80%	[1]
Proceeds from Issuance of Convertible Preferred Stock	$ 55.0
Proceeds from Issuance of Preferred Stock and Preference Stock	51.4
Proceeds from Contributions from Parent	$ 37.0		$ 7.0

[1] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[2] (1) March 31, 2015 balance has been been restated from previously reported amounts to correct for the classification of $981 thousand of interest-bearing deposits from available-for-sale securities to other assets, and the reclassification of negative escrow balances from Other Assets to Loans Receivable and Loans Held-for-Sale.