Investment Securities Amortized Cost and Estimated Fair Value (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Sep. 30, 2012	Mar. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
available for sale, at fair value	$ 114,462	$ 85,106
HTM Estimated Fair Value	10,737	11,774
Total securities amortized cost	123,828	95,821
Total securities gross unrealized gain	1,653	1,175
Total securities gross unrealized losses	(282)	(116)
Total securities Estimated Fair Value	125,199	96,880
Government National Mortgage Association
Schedule of Available-for-sale Securities [Line Items]
HTM Amortized Cost	5,983	6,659
HTM Gross Unrealized Gains	483	473
HTM Gross Unrealized Losses	0	0
HTM Estimated Fair Value	6,466	7,132
Held-to-maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
HTM Amortized Cost	10,038	11,081
HTM Gross Unrealized Gains	699	693
HTM Gross Unrealized Losses	0	0
HTM Estimated Fair Value	10,737	11,774
Federal National Mortgage Association
Schedule of Available-for-sale Securities [Line Items]
HTM Amortized Cost	1,496	1,628
HTM Gross Unrealized Gains	92	86
HTM Gross Unrealized Losses	0	0
HTM Estimated Fair Value	1,588	1,714
Federal Home Loan Mortgage Corporation
Schedule of Available-for-sale Securities [Line Items]
HTM Amortized Cost	2,559	2,794
HTM Gross Unrealized Gains	124	134
HTM Gross Unrealized Losses	0	0
HTM Estimated Fair Value	2,683	2,928
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	113,790	84,740
AFS Gross Unrealized Gains	954	482
AFS Gross Unrealized Losses	(282)	(116)
available for sale, at fair value	114,462	85,106
Total mortgage-backed securities AFS
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	39,934	45,782
AFS Gross Unrealized Gains	456	327
AFS Gross Unrealized Losses	(241)	(25)
available for sale, at fair value	40,149	46,084
Government National Mortgage Association
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	25,217	31,100
AFS Gross Unrealized Gains	203	269
AFS Gross Unrealized Losses	(210)	(23)
available for sale, at fair value	25,210	31,346
Federal Home Loan Mortgage Corporation
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	7,500	7,468
AFS Gross Unrealized Gains	68	8
AFS Gross Unrealized Losses	(31)	(1)
available for sale, at fair value	7,537	7,475
Federal National Mortgage Association
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	5,204	7,214
AFS Gross Unrealized Gains	151	50
AFS Gross Unrealized Losses	0	(1)
available for sale, at fair value	5,355	7,263
Small Business Association
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	1,962
AFS Gross Unrealized Gains	34
AFS Gross Unrealized Losses	0
available for sale, at fair value	1,996
Other
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	51
AFS Gross Unrealized Gains	0
AFS Gross Unrealized Losses	0
available for sale, at fair value	51
US Government Agency Securities
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	43,128	23,176
AFS Gross Unrealized Gains	153	91
AFS Gross Unrealized Losses	(20)	(63)
available for sale, at fair value	43,261	23,204
US Government Securities
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	3,102	3,356
AFS Gross Unrealized Gains	3	6
AFS Gross Unrealized Losses	0	(1)
available for sale, at fair value	3,105	3,361
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	1,904	1,890
AFS Gross Unrealized Gains	114	58
AFS Gross Unrealized Losses	0	0
available for sale, at fair value	2,018	1,948
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	15,237
AFS Gross Unrealized Gains	48
AFS Gross Unrealized Losses	(21)
available for sale, at fair value	15,264
Other
Schedule of Available-for-sale Securities [Line Items]
AFS Amortized Cost	10,485	10,536
AFS Gross Unrealized Gains	180	0
AFS Gross Unrealized Losses	0	(27)
available for sale, at fair value	$ 10,665	$ 10,509

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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