Fair Value - Level 3 Fair Value Measurements for Financial Instruments on a Non-recurring Basis (Details) (USD $) | 12 Months Ended |
Dec. 31, 2014 | Dec. 31, 2013 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | $121,174,000 | $110,907,000 |
Fair Value, Impaired loans | 4,344,000 | 3,824,000 |
Fair Value, Other real estate owned | 2,199,000 | 1,776,000 |
Fair value of mortgage servicing rights | 1,190,000 | |
Present value of future servicing income based on default rates | 13.69% | 14.22% |
One to Four Family Residential Real Estate Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 70,000 | |
Fair Value, Other real estate owned | 55,000 | |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value Measurements, Valuation Processes, Description | SalesB comparison | |
Fair Value Measurements, Sensitivity Analysis, Description | Discount applied to valuation | |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 4.80% | 7.50% |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 6.30% | 5.00% |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 4.80% | 12.80% |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 7.70% | 9.40% |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 4.80% | 10.00% |
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 7.00% | 8.00% |
Multi-family mortgage loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 1,905,000 | |
Fair Value, Other real estate owned | 1,265,000 | |
Multi-family mortgage loans [Member] | Sales comparison [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value Measurements, Valuation Processes, Description | Sales comparison | |
Fair Value Measurements, Sensitivity Analysis, Description | Comparison between sales and income approaches | |
Multi-family mortgage loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | -2.10% | 12.30% |
Multi-family mortgage loans [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | -6.60% | |
Multi-family mortgage loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 43.70% | 19.40% |
Multi-family mortgage loans [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 13.50% | |
Multi-family mortgage loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 41.00% | 17.00% |
Multi-family mortgage loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 0.40% | |
Multi-family mortgage loans [Member] | Income approach [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value Measurements, Valuation Processes, Description | Income approach | |
Fair Value Measurements, Sensitivity Analysis, Description | Cap Rate | |
Multi-family mortgage loans [Member] | Income approach [Member] | Minimum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Cap Rate | 9.60% | 7.25% |
Multi-family mortgage loans [Member] | Income approach [Member] | Maximum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Cap Rate | 13.80% | 13.80% |
Multi-family mortgage loans [Member] | Income approach [Member] | Weighted Average [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Cap Rate | 10.00% | 9.00% |
Nonresidential real estate loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 2,369,000 | |
Fair Value, Other real estate owned | 126,000 | |
Nonresidential real estate loans [Member] | Sales comparison [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value Measurements, Valuation Processes, Description | Sales comparison | |
Fair Value Measurements, Sensitivity Analysis, Description | Comparison between sales and income approaches | |
Nonresidential real estate loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | -2.10% | -3.00% |
Nonresidential real estate loans [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 32.30% | 0.00% |
Nonresidential real estate loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 33.90% | 45.10% |
Nonresidential real estate loans [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 32.30% | 10.10% |
Nonresidential real estate loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 24.00% | 11.00% |
Nonresidential real estate loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Comparison between sales and income approaches | 32.30% | 7.00% |
Nonresidential real estate loans [Member] | Income approach [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value Measurements, Valuation Processes, Description | Income approach | |
Fair Value Measurements, Sensitivity Analysis, Description | Cap Rate | |
Nonresidential real estate loans [Member] | Income approach [Member] | Minimum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Cap Rate | 10.00% | 10.00% |
Nonresidential real estate loans [Member] | Income approach [Member] | Maximum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Cap Rate | 11.00% | 10.70% |
Nonresidential real estate loans [Member] | Income approach [Member] | Weighted Average [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weighted Average), Cap Rate | 10.00% | 10.00% |
Construction and land loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | | 21.20% |
Construction and land loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | | 21.20% |
Construction and land loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | | 21.20% |
Land [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Other real estate owned | 753,000 | |
Land [Member] | Sales comparison [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value Measurements, Valuation Processes, Description | Sales comparison | |
Fair Value Measurements, Sensitivity Analysis, Description | Discount applied to valuation | |
Land [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | -21.90% | 0.00% |
Land [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | 4.20% | 10.20% |
Land [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Range (Weigthed Average), Discount applied to valuation | -10.00% | 2.00% |
Mortgage servicing rights [Member] | Third party valuation [Member] | Minimum [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Present value of future servicing income based on default rates | 11.80% | 11.40% |
Mortgage servicing rights [Member] | Third party valuation [Member] | Maximum [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Present value of future servicing income based on default rates | 24.40% | 23.50% |
Mortgage servicing rights [Member] | Third party valuation [Member] | Weighted Average [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Present value of future servicing income based on default rates | 15.40% | 15.21% |
Present value of future servicing income based on default rates | 12.00% | 12.00% |
Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 121,174,000 | 110,907,000 |
Fair Value, Impaired loans | 4,344,000 | 3,824,000 |
Fair Value, Other real estate owned | 2,199,000 | 1,776,000 |
Fair value of mortgage servicing rights | 160,000 | 198,000 |
Fair Value, Measurements, Nonrecurring [Member] | One to Four Family Residential Real Estate Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 70,000 | 460,000 |
Fair Value, Other real estate owned | 55,000 | 297,000 |
Fair Value, Measurements, Nonrecurring [Member] | Multi-family mortgage loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 1,905,000 | 2,286,000 |
Fair Value, Other real estate owned | 1,265,000 | |
Fair Value, Measurements, Nonrecurring [Member] | Nonresidential real estate loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 2,369,000 | 971,000 |
Fair Value, Other real estate owned | 126,000 | 460,000 |
Fair Value, Measurements, Nonrecurring [Member] | Construction and land loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | | 107,000 |
Fair Value, Measurements, Nonrecurring [Member] | Land [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Other real estate owned | 753,000 | 1,019,000 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 0 | 0 |
Fair Value, Impaired loans | 4,344,000 | 3,824,000 |
Fair Value, Other real estate owned | 2,199,000 | 1,776,000 |
Fair value of mortgage servicing rights | | 198,000 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | One to Four Family Residential Real Estate Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 70,000 | 460,000 |
Fair Value, Other real estate owned | 55,000 | 297,000 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Multi-family mortgage loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 1,905,000 | 2,286,000 |
Fair Value, Other real estate owned | 1,265,000 | |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Nonresidential real estate loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 2,369,000 | 971,000 |
Fair Value, Other real estate owned | 126,000 | 460,000 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Construction and land loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | | 107,000 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Land [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Other real estate owned | 753,000 | 1,019,000 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Mortgage servicing rights [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of mortgage servicing rights | 160,000 | |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 509,000 | 497,000 |
Fair Value, Impaired loans | 0 | 0 |
Fair Value, Other real estate owned | 0 | 0 |
Fair value of mortgage servicing rights | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | One to Four Family Residential Real Estate Loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 0 | 0 |
Fair Value, Other real estate owned | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Multi-family mortgage loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 0 | 0 |
Fair Value, Other real estate owned | 0 | |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Nonresidential real estate loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | 0 | 0 |
Fair Value, Other real estate owned | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Construction and land loans [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Impaired loans | | 0 |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Land [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair Value, Other real estate owned | 0 | 0 |
Collateralized Mortgage Obligations Residential [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 9,976,000 | 16,814,000 |
Collateralized Mortgage Obligations Residential [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 0 | 0 |
Collateralized Mortgage Obligations Residential [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 0 | 0 |
Equity Mutual Fund [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 509,000 | 497,000 |
Equity Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 0 | 0 |
Mortgage Backed Securities Residential [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 24,611,000 | 28,364,000 |
Mortgage Backed Securities Residential [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | 0 | 0 |
Mortgage Backed Securities Residential [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale Securities, Debt Securities | $0 | $0 |