Fair Value of Financial Instruments - Hierarchy Table - Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Total
Total securities available for sale	$ 269,711	$ 280,273	$ 280,461
Municipal bonds
Total
Total securities available for sale	125,882	130,245	105,523
Collateralized mortgage obligation
Total
Total securities available for sale	23,866	24,543	11,288
Mortgage-backed securities
Total
Total securities available for sale	119,963	125,485	163,650
Level 1
Total
Total securities available for sale	0	0	0
Level 2
Total
Total securities available for sale	269,711	280,273	280,461
Level 3
Total
Total securities available for sale	0	$ 0	0
Recurring basis
Total
Total securities available for sale	269,711		280,461
Recurring basis | Municipal bonds
Total
Total securities available for sale	125,882		105,523
Recurring basis | Collateralized mortgage obligation
Total
Total securities available for sale	23,866		11,288
Recurring basis | Mortgage-backed securities
Total
Total securities available for sale	119,963		163,650
Recurring basis | Level 1
Total
Total securities available for sale	0		0
Recurring basis | Level 1 | Municipal bonds
Total
Total securities available for sale	0		0
Recurring basis | Level 1 | Collateralized mortgage obligation
Total
Total securities available for sale	0		0
Recurring basis | Level 1 | Mortgage-backed securities
Total
Total securities available for sale	0		0
Recurring basis | Level 2
Total
Total securities available for sale	269,711		280,461
Recurring basis | Level 2 | Municipal bonds
Total
Total securities available for sale	125,882		105,523
Recurring basis | Level 2 | Collateralized mortgage obligation
Total
Total securities available for sale	23,866		11,288
Recurring basis | Level 2 | Mortgage-backed securities
Total
Total securities available for sale	119,963		163,650
Recurring basis | Level 3
Total
Total securities available for sale	0		0
Recurring basis | Level 3 | Municipal bonds
Total
Total securities available for sale	0		0
Recurring basis | Level 3 | Collateralized mortgage obligation
Total
Total securities available for sale	0		0
Recurring basis | Level 3 | Mortgage-backed securities
Total
Total securities available for sale	$ 0		$ 0