Financing Receivables - Impaired Loans (Details 6) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
Mar. 31, 2016 | Dec. 31, 2015 |
Loans Receivable | | |
Financing Receivable, Impaired [Line Items] | | |
Related Allowance | $ 668 | $ 305 |
Recorded Investment | 15,865 | 14,395 |
Unpaid Principal Balance | 15,865 | 14,395 |
Average Recorded Investment | 15,128 | 14,864 |
Interest Income Recognized | 72 | 158 |
Loans Receivable | Residential | One-to-four Family | | |
Financing Receivable, Impaired [Line Items] | | |
Related Allowance | 301 | 251 |
Recorded Investment | 8,089 | 7,811 |
Unpaid Principal Balance | 8,089 | 7,811 |
Average Recorded Investment | 7,949 | 7,771 |
Interest Income Recognized | $ 47 | $ 95 |
Loans Receivable | Residential | Multi-family | | |
Financing Receivable, Impaired [Line Items] | | |
Related Allowance | | |
Recorded Investment | $ 651 | $ 656 |
Unpaid Principal Balance | 651 | 656 |
Average Recorded Investment | 653 | $ 556 |
Interest Income Recognized | $ 3 | |
Loans Receivable | Residential | Construction | | |
Financing Receivable, Impaired [Line Items] | | |
Related Allowance | | |
Recorded Investment | | |
Unpaid Principal Balance | | |
Average Recorded Investment | | |
Interest Income Recognized | | |
Loans Receivable | Commercial | | |
Financing Receivable, Impaired [Line Items] | | |
Related Allowance | $ 367 | $ 54 |
Recorded Investment | 7,121 | 5,923 |
Unpaid Principal Balance | 7,121 | 5,923 |
Average Recorded Investment | 6,522 | 6,534 |
Interest Income Recognized | $ 22 | $ 63 |
Loans Receivable | Consumer | | |
Financing Receivable, Impaired [Line Items] | | |
Related Allowance | | |
Recorded Investment | $ 4 | $ 5 |
Unpaid Principal Balance | 4 | 5 |
Average Recorded Investment | $ 4 | $ 3 |
Interest Income Recognized | | |
Purchased loans | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with related allowance | $ 1,042 | $ 842 |
Unpaid Principal Balance, with related allowance | 1,042 | 639 |
Related Allowance | 284 | 140 |
Average Recorded Investment, with related allowance | 942 | $ 741 |
Interest Income Recognized, with related allowance | 8 | |
Purchased loans | With fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 9,499 | |
Unpaid Principal Balance, with no related allowance recorded | $ 9,499 | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 9,289 | |
Interest Income Recognized, with no related allowance | 23 | |
Purchased loans | With no fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 1,426 | |
Unpaid Principal Balance, with no related allowance recorded | 1,426 | |
Related Allowance, with no related allowance recorded | 211 | |
Average Recorded Investment, with no related allowance | $ 713 | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | With Credit Quality Discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | $ 9,080 |
Unpaid Principal Balance, with no related allowance recorded | | $ 9,080 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | $ 9,873 |
Interest Income Recognized, with no related allowance | | $ 124 |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | With no credit quality discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 1,672 | $ 2,065 |
Unpaid Principal Balance, with no related allowance recorded | $ 1,672 | $ 2,065 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 1,868 | $ 1,900 |
Interest Income Recognized, with no related allowance | 23 | |
Purchased loans | Residential | One-to-four Family | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with related allowance | 630 | $ 555 |
Unpaid Principal Balance, with related allowance | 630 | 555 |
Related Allowance | 135 | 93 |
Average Recorded Investment, with related allowance | 592 | $ 597 |
Interest Income Recognized, with related allowance | 4 | |
Purchased loans | Residential | One-to-four Family | With fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 4,119 | |
Unpaid Principal Balance, with no related allowance recorded | $ 4,119 | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 3,850 | |
Interest Income Recognized, with no related allowance | $ 8 | |
Purchased loans | Residential | One-to-four Family | With no fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Residential | One-to-four Family | With Credit Quality Discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | $ 3,582 |
Unpaid Principal Balance, with no related allowance recorded | | $ 3,582 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | $ 3,780 |
Interest Income Recognized, with no related allowance | | $ 62 |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Residential | One-to-four Family | With no credit quality discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 1,373 | $ 1,526 |
Unpaid Principal Balance, with no related allowance recorded | $ 1,373 | $ 1,526 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 1,450 | $ 1,303 |
Interest Income Recognized, with no related allowance | $ 18 | |
Purchased loans | Residential | Multi-family | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Residential | Multi-family | With fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 350 | |
Unpaid Principal Balance, with no related allowance recorded | $ 350 | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 352 | |
Interest Income Recognized, with no related allowance | $ 1 | |
Purchased loans | Residential | Multi-family | With no fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Residential | Multi-family | With Credit Quality Discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | $ 354 |
Unpaid Principal Balance, with no related allowance recorded | | $ 354 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | $ 357 |
Interest Income Recognized, with no related allowance | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Residential | Multi-family | With no credit quality discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 108 | $ 109 |
Unpaid Principal Balance, with no related allowance recorded | $ 108 | $ 109 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 108 | $ 55 |
Interest Income Recognized, with no related allowance | $ 2 | |
Purchased loans | Residential | Construction | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Residential | Construction | With fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Residential | Construction | With no fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Residential | Construction | With Credit Quality Discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Residential | Construction | With no credit quality discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Commercial | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with related allowance | $ 412 | $ 287 |
Unpaid Principal Balance, with related allowance | 412 | 287 |
Related Allowance | 149 | 47 |
Average Recorded Investment, with related allowance | 350 | $ 144 |
Interest Income Recognized, with related allowance | 4 | |
Purchased loans | Commercial | With fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 5,030 | |
Unpaid Principal Balance, with no related allowance recorded | $ 5,030 | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 5,087 | |
Interest Income Recognized, with no related allowance | 14 | |
Purchased loans | Commercial | With no fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 1,426 | |
Unpaid Principal Balance, with no related allowance recorded | 1,426 | |
Related Allowance, with no related allowance recorded | 211 | |
Average Recorded Investment, with no related allowance | $ 713 | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Commercial | With Credit Quality Discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | $ 5,144 |
Unpaid Principal Balance, with no related allowance recorded | | $ 5,144 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | $ 5,736 |
Interest Income Recognized, with no related allowance | | $ 62 |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Commercial | With no credit quality discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 191 | $ 430 |
Unpaid Principal Balance, with no related allowance recorded | $ 191 | $ 430 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 310 | $ 542 |
Interest Income Recognized, with no related allowance | $ 3 | |
Purchased loans | Consumer | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Consumer | With fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Consumer | With no fair value discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Purchased loans | Consumer | With Credit Quality Discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Purchased loans | Consumer | With no credit quality discount | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Originated loans | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 1,640 | $ 1,875 |
Unpaid Principal Balance, with no related allowance recorded | $ 1,640 | $ 1,875 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 1,757 | $ 1,726 |
Interest Income Recognized, with no related allowance | 14 | 9 |
Recorded Investment, with related allowance | 586 | 533 |
Unpaid Principal Balance, with related allowance | 586 | 533 |
Related Allowance | 173 | 165 |
Average Recorded Investment, with related allowance | 559 | 624 |
Interest Income Recognized, with related allowance | 4 | 25 |
Originated loans | Residential | One-to-four Family | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 1,428 | 1,662 |
Unpaid Principal Balance, with no related allowance recorded | $ 1,428 | $ 1,662 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 1,545 | $ 1,514 |
Interest Income Recognized, with no related allowance | 14 | 8 |
Recorded Investment, with related allowance | 539 | 486 |
Unpaid Principal Balance, with related allowance | 539 | 486 |
Related Allowance | 166 | 158 |
Average Recorded Investment, with related allowance | 512 | 577 |
Interest Income Recognized, with related allowance | 3 | 25 |
Originated loans | Residential | Multi-family | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 193 | 193 |
Unpaid Principal Balance, with no related allowance recorded | $ 193 | $ 193 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 193 | $ 144 |
Interest Income Recognized, with no related allowance | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Originated loans | Residential | Construction | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | | |
Unpaid Principal Balance, with no related allowance recorded | | |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | | |
Interest Income Recognized, with no related allowance | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |
Originated loans | Commercial | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | $ 15 | $ 15 |
Unpaid Principal Balance, with no related allowance recorded | $ 15 | $ 15 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 15 | $ 65 |
Interest Income Recognized, with no related allowance | | 1 |
Recorded Investment, with related allowance | $ 47 | 47 |
Unpaid Principal Balance, with related allowance | 47 | 47 |
Related Allowance | 7 | 7 |
Average Recorded Investment, with related allowance | 47 | $ 47 |
Interest Income Recognized, with related allowance | 1 | |
Originated loans | Consumer | | |
Financing Receivable, Impaired [Line Items] | | |
Recorded Investment, with no related allowance recorded | 4 | $ 5 |
Unpaid Principal Balance, with no related allowance recorded | $ 4 | $ 5 |
Related Allowance, with no related allowance recorded | | |
Average Recorded Investment, with no related allowance | $ 4 | $ 3 |
Interest Income Recognized, with no related allowance | | |
Recorded Investment, with related allowance | | |
Unpaid Principal Balance, with related allowance | | |
Related Allowance | | |
Average Recorded Investment, with related allowance | | |
Interest Income Recognized, with related allowance | | |