Acquired Loans - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) CreditRiskGrade	Dec. 31, 2015 USD ($)
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities [Abstract]
Number of individual credit risk grades | CreditRiskGrade	10
Nonaccrual loans not accounted for under FASB ASC Topic 310 30 | $	$ 631	$ 1,000