Fair Value of Financial Instruments - Hierarchy Table - Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Total
Investment securities available for sale, at fair value	$ 245,471	$ 280,273
Municipal bonds
Total
Investment securities available for sale, at fair value	118,799	130,245
Collateralized mortgage obligation
Total
Investment securities available for sale, at fair value	22,844	24,543
Mortgage-backed securities
Total
Investment securities available for sale, at fair value	103,828	125,485
Level 1
Total
Investment securities available for sale, at fair value	0	0
Level 2
Total
Investment securities available for sale, at fair value	245,471	280,273
Level 3
Total
Investment securities available for sale, at fair value	0	0
Recurring basis
Total
Investment securities available for sale, at fair value	245,471	280,273
Recurring basis | Municipal bonds
Total
Investment securities available for sale, at fair value	118,799	130,245
Recurring basis | Collateralized mortgage obligation
Total
Investment securities available for sale, at fair value	22,844	24,543
Recurring basis | Mortgage-backed securities
Total
Investment securities available for sale, at fair value	103,828	125,485
Recurring basis | Level 1
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 1 | Municipal bonds
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 1 | Collateralized mortgage obligation
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 1 | Mortgage-backed securities
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 2
Total
Investment securities available for sale, at fair value	245,471	280,273
Recurring basis | Level 2 | Municipal bonds
Total
Investment securities available for sale, at fair value	118,799	130,245
Recurring basis | Level 2 | Collateralized mortgage obligation
Total
Investment securities available for sale, at fair value	22,844	24,543
Recurring basis | Level 2 | Mortgage-backed securities
Total
Investment securities available for sale, at fair value	103,828	125,485
Recurring basis | Level 3
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 3 | Municipal bonds
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 3 | Collateralized mortgage obligation
Total
Investment securities available for sale, at fair value	0	0
Recurring basis | Level 3 | Mortgage-backed securities
Total
Investment securities available for sale, at fair value	$ 0	$ 0