Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
---|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
|
Servicing Assets at Fair Value [Line Items] | |||||
Servicing, late and ancillary fees received | $ 528 | $ 421 | $ 1,062 | $ 841 | |
Weighted-average prepayment speed (CPR) | 9.50% | 11.00% | |||
Discount rate | 10.00% | 10.00% | |||
Loans [Member] | |||||
Servicing Assets at Fair Value [Line Items] | |||||
Balance at beginning of period | 832,143 | 672,341 | $ 840,288 | $ 680,197 | $ 680,197 |
Balance at end of period | 827,333 | 667,969 | 827,333 | 667,969 | 840,288 |
Mortgage servicing rights [Member] | |||||
Servicing Assets at Fair Value [Line Items] | |||||
Balance at beginning of period | 7,057 | 6,107 | 7,378 | 6,165 | 6,165 |
Additions | 236 | 153 | 421 | 276 | |
Change in fair value | 521 | (351) | 15 | (532) | |
Balance at end of period | $ 7,814 | $ 5,909 | $ 7,814 | $ 5,909 | $ 7,378 |