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Securities - Contractual Maturity (Detail) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Amortized Cost |  |
1 year or less | $ 58,441 |
1 year – 5 years | 165,901 |
5 years – 10 years | 45,747 |
After 10 years | 1,974 |
Total, Amortized Cost | 272,063 |
Total debt securities, Amortized Cost | 456,756 | $ 409,110
Fair Value |  |
1 year or less | 58,328 |
1 year – 5 years | 165,331 |
5 years – 10 years | 45,967 |
After 10 years | 1,928 |
Total, Fair Value | 271,554 |
Total debt securities, Fair Value | 450,895 | 409,709
Residential & multi-family mortgage |  |
Amortized Cost |  |
Mortgage & asset backed securities, Amortized Cost | 150,632 |
Total debt securities, Amortized Cost | 150,632 | 111,214
Fair Value |  |
Mortgage & asset backed securities, Fair Value | 146,467 |
Total debt securities, Fair Value | 146,467 | 109,636
Pooled SBA |  |
Amortized Cost |  |
Mortgage & asset backed securities, Amortized Cost | 33,041 |
Total debt securities, Amortized Cost | 33,041 | 36,260
Fair Value |  |
Mortgage & asset backed securities, Fair Value | 31,939 |
Total debt securities, Fair Value | 31,939 | 36,040
Other |  |
Amortized Cost |  |
Mortgage & asset backed securities, Amortized Cost | 1,020 |
Total debt securities, Amortized Cost | 1,020 | 1,020
Fair Value |  |
Mortgage & asset backed securities, Fair Value | 935 |
Total debt securities, Fair Value | $ 935 | $ 962

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