Financial Guarantees (Textual) (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Financial Guarantees (Textual) [Abstract]
Potential losses from standby letters of credit	$ 0	$ 0
Liability related to financial guarantees	950,000
Performance Guarantee [Member]
Financial Guarantees (Textual) [Abstract]
Recorded liability	6,900,000	4,000,000
Financial and Performance Standby Letters of Credit [Member]
Financial Guarantees (Textual) [Abstract]
Letters of credit outstanding	117,300,000	38,800,000
Liability related to financial guarantees		0
Commitments to Extend Credit [Member]
Financial Guarantees (Textual) [Abstract]
Loan commitments under financial guarantee	3,250,000,000	1,590,000,000
Loan Commitments [Member]
Financial Guarantees (Textual) [Abstract]
Loan commitments under financial guarantee	480,000,000	293,600,000
Certain Loans with Limited Recourse [Member]
Financial Guarantees (Textual) [Abstract]
Principal amount outstanding on loans	22,600,000	1,500,000
Maximum undiscounted potential future payments	21,600,000	1,500,000
Recorded liability	$ 200,000	$ 100,000