Fair Value Measurements - Schedule of Additional Quantitative Information (Details) - Nonrecurring - Collateral dependent impaired loans - Level 3 $ in Thousands	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Estimate	$ 3,858	$ 3,883
Measurement Input, Discount Rate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average	0.16	0.16
Measurement Input, Discount Rate | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average	0.10	0.10
Measurement Input, Discount Rate | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average	0.50	0.50