Fair Value of Financial Instruments - Schedule of Quantitative Information About Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Jun. 30, 2017
Fair value at December 31, 2015	$ 8,711	$ 13,200
Other real estate owned
Fair value at December 31, 2015	145	4,044
Fair Value, Inputs, Level 3
Fair value at December 31, 2015	8,711	13,200
Fair Value, Inputs, Level 3 | Other real estate owned
Fair value at December 31, 2015	145	$ 4,044
Fair Value, Inputs, Level 3 | Nonrecurring measurements | Impaired loans, net
Fair value at December 31, 2015	$ 8,566
Weighted Average	4.00%
Fair Value, Inputs, Level 3 | Nonrecurring measurements | Other real estate owned
Fair value at December 31, 2015	$ 145
Weighted Average	19.00%
Minimum | Fair Value, Inputs, Level 3 | Nonrecurring measurements | Impaired loans, net
Range	3.00%
Minimum | Fair Value, Inputs, Level 3 | Nonrecurring measurements | Other real estate owned
Range	10.00%
Maximum | Fair Value, Inputs, Level 3 | Nonrecurring measurements | Impaired loans, net
Range	33.00%
Maximum | Fair Value, Inputs, Level 3 | Nonrecurring measurements | Other real estate owned
Range	37.00%