Fair Value of Financial Instruments - Measurement (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans and leases		$ 6,102	$ 5,946
Other real estate owned		$ 1,471	2,384
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans and leases	$ 6,102		5,946
Other real estate owned	$ 1,471		$ 2,384