Financing Receivables - Loans by delinquency, nonaccrual status and impaired loans (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Originated loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due	$ 1,893	$ 1,915
Greater than 90 Days	2,131	2,981
Total Past Due	4,024	4,896
Current & Accruing	223,965	221,995
Nonaccrual	2,131	2,981
Originated loans	227,989	226,891
Recorded Investment 90 Days and Accruing
Originated loans | 1-4 family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due	1,893	1,915
Greater than 90 Days	1,397	2,207
Total Past Due	3,290	4,122
Current & Accruing	153,755	153,761
Nonaccrual	1,397	2,207
Originated loans	157,045	157,883
Recorded Investment 90 Days and Accruing
Originated loans | Multi-family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due
Greater than 90 Days	95	95
Total Past Due	95	95
Current & Accruing	13,959	15,214
Nonaccrual	95	95
Originated loans	14,054	15,309
Recorded Investment 90 Days and Accruing
Originated loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due
Greater than 90 Days
Total Past Due
Current & Accruing	7,040	7,141
Nonaccrual
Originated loans	7,040	7,141
Recorded Investment 90 Days and Accruing
Originated loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due
Greater than 90 Days	639	679
Total Past Due	639	679
Current & Accruing	48,425	45,109
Nonaccrual	639	679
Originated loans	49,064	45,788
Recorded Investment 90 Days and Accruing
Originated loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due
Greater than 90 Days
Total Past Due
Current & Accruing	786	770
Nonaccrual
Originated loans	786	770
Recorded Investment 90 Days and Accruing
Purchased loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due	2,392	2,623
Greater than 90 Days	3,425	3,981
Total Past Due	5,817	6,604
Current & Accruing	102,802	107,720
Nonaccrual	3,425	3,981
Purchased loans	108,619	114,324
Recorded Investment 90 Days and Accruing
Purchased loans | 1-4 family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due	1,385	2,221
Greater than 90 Days	2,708	3,287
Total Past Due	4,093	5,508
Current & Accruing	70,849	72,845
Nonaccrual	2,708	3,287
Purchased loans	74,942	78,353
Recorded Investment 90 Days and Accruing
Purchased loans | Multi-family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due		56
Greater than 90 Days
Total Past Due		56
Current & Accruing	5,956	7,440
Nonaccrual
Purchased loans	5,956	7,496
Recorded Investment 90 Days and Accruing
Purchased loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due
Greater than 90 Days
Total Past Due
Current & Accruing
Nonaccrual
Purchased loans
Recorded Investment 90 Days and Accruing
Purchased loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due	1,007	336
Greater than 90 Days	693	676
Total Past Due	1,700	1,012
Current & Accruing	24,563	25,955
Nonaccrual	693	676
Purchased loans	26,263	26,967
Recorded Investment 90 Days and Accruing
Purchased loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
>30-89 Days Past Due		10
Greater than 90 Days	24	18
Total Past Due	24	28
Current & Accruing	1,434	1,480
Nonaccrual	24	18
Purchased loans	1,458	1,508
Recorded Investment 90 Days and Accruing