Borrowings (Additional Information) (Details)		12 Months Ended
		Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Short-term Debt [Line Items]
number of contracts		1
Securities Sold under Agreements to Repurchase	[1]	$ 230,612,000	$ 215,041,000
Amortization of Debt Issuance Costs		54,000	9,000
Line of credit, maximum borrowing capacity		10,000,000.0
Line of credit, amount outstanding		$ 0
Line of credit, expiration date		Dec. 20, 2017
Loans Pledged as Collateral		$ 115,000,000
Available-for-sale Securities Pledged as Collateral		$ 73,000
Debt Instrument, Interest Rate During Period		4.67%
Federal Home Loan Bank Advances [Member]
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity		$ 9,900,000	9,900,000
Line of credit, amount outstanding		0	0
PNC [Member]
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity		50,000,000
Federal Reserve Bank Advances [Member]
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity		72,300,000
Commercial Borrower [Member]
Short-term Debt [Line Items]
Securities Sold under Agreements to Repurchase		$ 5,007,000	$ 30,052,000

[1] (1) Total repurchase agreements are presented within short-term borrowings on the consolidated statements of condition.