Deposits Deposits and interest rates (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Deposits, by Type [Abstract]
Noninterest-bearing demand	$ 50,731	$ 53,232
Interest-bearing checking	30,860	24,271
Savings	95,009	98,051
Money market	148,702	127,655
Certificates of deposit	200,123	203,907
Mortgagors deposits	2,336	2,250
Deposits	$ 527,761	$ 509,366
Percentage of Total Deposits [Abstract]
Percentage of Noninterest bearing demand deposits to deposits	9.61%	10.45%
Percentage of Interest-bearing Domestic Deposits to Deposits	5.85%	4.76%
Percentage of Interest-bearing Domestic Deposits to Deposits, Savings	18.00%	19.26%
Percentage of Interest-bearing Domestic Deposits to Deposits, Money Market	28.18%	25.06%
Percentage of Interest-bearing Domestic Deposits to Deposits, Certificates of Deposit	37.92%	40.03%
Percentage of other deposits to deposits	0.44%	0.44%
Percent Total Deposits	100.00%	100.00%
Weighted Average Rate Domestic Deposit Liabilities [Abstract]
Weighted Average Rate Domestic Deposit, Demand	0.00%	0.00%
Weighted Average Rate Domestic Deposit, Checking	0.16%	0.16%
Weighted Average Rate Domestic Deposit, Savings	0.27%	0.27%
Weighted Average Rate Domestic Deposit, Money Market	0.49%	0.46%
Weighted Average Rate Domestic Deposit, Certificates of Deposit	0.93%	1.01%
Weighted Average Rate-Other Deposit	1.53%	1.73%
Weighted Average Rate Domestic Deposit	0.55%	0.59%

Other Deposits

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- Definition

Percent Total Deposits

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- Definition

Percentage of Noninterest bearing demand deposits to deposits

+ References

No definition available.

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- Definition

Percentage of other deposits to deposits

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Percentage of Total Deposits [Abstract]

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- Definition

Weighted Average Rate-Other Deposit

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No definition available.

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.12)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 9

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- Definition

Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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- Definition

Amount of interest-bearing domestic checking deposit liabilities.

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- Definition

The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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- Definition

Percentage of interest-bearing domestic deposit liabilities to total deposit liabilities.

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Percentage of interest-bearing domestic certificates of deposit liabilities to total deposit liabilities.

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- Definition

Percentage of interest-bearing domestic money market demand account deposit liabilities to total deposit liabilities.

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- Definition

Percentage of interest-bearing domestic savings deposit liabilities to total deposit liabilities.

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- Definition

Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

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- Definition

The weighted average interest rate for all domestic deposit liabilities.

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- Definition

The weighted average interest rate for domestic certificates of deposit liabilities.

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The weighted average interest rate for domestic checking deposit liabilities.

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- Definition

The weighted average interest rate for domestic demand deposit liabilities.

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The weighted average interest rate for domestic money market demand account deposit liabilities.

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The weighted average interest rate for domestic savings deposit liabilities.

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