Variable Interest Entities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Classification of carrying amount of assets and liabilities of VIE [Abstract]
Proceeds from issuance of subordinated debt	$ 82,500
Maximum Loss Exposure
Liability Recognized
Low Income Housing Partnerships [Member] | Other Assets [Member]
Classification of carrying amount of assets and liabilities of VIE [Abstract]
Maximum Loss Exposure	24,150	13,889
Liability Recognized	0	0
Trust Preferred Issuances [Member] | Subordinated Debt [Member]
Classification of carrying amount of assets and liabilities of VIE [Abstract]
Maximum Loss Exposure
Liability Recognized	82,476	82,476
Commercial Troubled Debt Restructurings [Member] | Loans [Member]
Classification of carrying amount of assets and liabilities of VIE [Abstract]
Maximum Loss Exposure	11,572	4,368
Liability Recognized	$ 0	$ 0