Acquired Loans - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) CreditRiskGrade	Dec. 31, 2014 USD ($)
Allowance for Loan and Lease Losses [Roll Forward]
Number of individual credit risk grades | CreditRiskGrade	10
Loans and Leases Receivable Disclosure [Abstract]
Nonaccrual loans not accounted for under FASB ASC Topic 310 30 | $	$ 1.0	$ 1.1