Fair Value Measurements - (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Measurements (Textual) [Abstract]
Impaired loans not covered under loss-share agreements	$ 3,746,000		$ 3,746,000		$ 13,349,000
Specific reserve included in allowance for loan losses	279,000		279,000		$ 989,000
Changes in fair value, gain (loss)			1,023,000	$ (58,000)
Impairment losses on mortgage servicing rights	$ 0	$ 0	$ 0	$ 0