Fair Value - Schedule of valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis (Details) - Fair Value, Measurements, Nonrecurring - Significant Unobservable Inputs (Level 3) - Sales comparison approach	12 Months Ended
	Dec. 31, 2015
Impaired loans | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(12.00%)
Impaired loans | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	13.00%
Impaired loans | Weighted Average
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	1.00%
Real estate owned.
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(11.00%)
Real estate owned. | Weighted Average
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(11.00%)