Fair Value Measurements - (Details 4) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
OREO covered under loss-share agreements:
Fair value	$ 65	$ 0
OREO not covered under loss-share agreements:
Fair value	2,568	12,839
Carrying amount prior to remeasurement
OREO covered under loss-share agreements:
Fair value	111	0
OREO not covered under loss-share agreements:
Fair value	2,853	14,726
Impairment recognized in results of operations
OREO covered under loss-share agreements:
Fair value	(9)	0
OREO not covered under loss-share agreements:
Fair value	(285)	(1,887)
Increase in FDIC loss-share indemnification asset
OREO covered under loss-share agreements:
Fair value	(37)	0
Receivable from other guarantor
OREO covered under loss-share agreements:
Fair value	$ 0	$ 0