Loan Receivable and Allowance for Loan and Lease Losses Non performing TDRs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jun. 30, 2012
Financing Receivable, Modifications [Line Items]
Mortgage Loans on Real Estate, Number of Loans	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 540
Financing Receivable, Recorded Investment, Current	540
weighted average rate pre modification	6.75%
Weighted average rate post modification	4.00%
One- to four family loans [Member]
Financing Receivable, Modifications [Line Items]
Mortgage Loans on Real Estate, Number of Loans	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	540
Financing Receivable, Recorded Investment, Current	$ 540
weighted average rate pre modification	6.75%
Weighted average rate post modification	4.00%

Indicates the number of mortgages under each classification.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-29.3)

-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule IV

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 29

-Paragraph 3

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

-URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674

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