Fair Value - Nonrecurrning Measurements (Details) (Nonrecurring, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Other real estate owned	$ 7,445	$ 5,391
Estimated Fair Value | Impaired Loans Receivable | Construction Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	2,152	441
Estimated Fair Value | Impaired Loans Receivable | Owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	7,941	5,874
Estimated Fair Value | Impaired Loans Receivable | Non-owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	1,274	832
Estimated Fair Value | Impaired Loans Receivable | Commercial Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	1,193	403
Estimated Fair Value | Impaired Loans Receivable | One to Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	2,667	453
Estimated Fair Value | Impaired Loans Receivable | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	165
Estimated Fair Value | Impaired Loans Receivable | Home Equity Lines of Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	70	291
Estimated Fair Value | Impaired Loans Receivable | Consumer and Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Other real estate owned	0	0
Level 1 | Impaired Loans Receivable | Construction Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | Owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | Non-owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | Commercial Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | One to Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | Home Equity Lines of Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 1 | Impaired Loans Receivable | Consumer and Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Other real estate owned	0	0
Level 2 | Impaired Loans Receivable | Construction Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | Owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | Non-owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | Commercial Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | One to Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | Home Equity Lines of Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 2 | Impaired Loans Receivable | Consumer and Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Other real estate owned	7,445	5,391
Level 3 | Impaired Loans Receivable | Construction Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	2,152	441
Level 3 | Impaired Loans Receivable | Owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	7,941	5,874
Level 3 | Impaired Loans Receivable | Non-owner Occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	1,274	832
Level 3 | Impaired Loans Receivable | Commercial Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	1,193	403
Level 3 | Impaired Loans Receivable | One to Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	2,667	453
Level 3 | Impaired Loans Receivable | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	0	165
Level 3 | Impaired Loans Receivable | Home Equity Lines of Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	70	291
Level 3 | Impaired Loans Receivable | Consumer and Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired loans	$ 0	$ 0