Fair Value Measurements (Nonrecurring Basis) (Details) - Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	$ 63,572	$ 45,133
Quoted Prices In Active Markets for Identical Assets (Level 1)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0	0
Significant Other Observable Inputs (Level 2)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0	0
Significant Unobservable Inputs (Level 3)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	63,572	45,133
Impaired originated loans
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis		42,065
Impaired originated loans | Quoted Prices In Active Markets for Identical Assets (Level 1)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0	0
Impaired originated loans | Significant Other Observable Inputs (Level 2)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0	0
Impaired originated loans | Significant Unobservable Inputs (Level 3)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	62,184	42,065
Other real estate/repossessed assets
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	1,386	3,068
Other real estate/repossessed assets | Quoted Prices In Active Markets for Identical Assets (Level 1)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0	0
Other real estate/repossessed assets | Significant Other Observable Inputs (Level 2)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0	0
Other real estate/repossessed assets | Significant Unobservable Inputs (Level 3)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	1,386	$ 3,068
Loan Servicing Rights
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	2
Loan Servicing Rights | Quoted Prices In Active Markets for Identical Assets (Level 1)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0
Loan Servicing Rights | Significant Other Observable Inputs (Level 2)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	0
Loan Servicing Rights | Significant Unobservable Inputs (Level 3)
Summary of assets measured at fair value on a nonrecurring basis
Total assets measured at fair value on a nonrecurring basis	$ 2