Fair Value Measurements - Schedule of Assets with Unobservable Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Nonrecurring assets, loss	$ 3	$ (148)	$ 1,942
Loans measured for impairment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Nonrecurring assets, loss	3	(952)	352
Other real estate owned
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Nonrecurring assets, loss	0	0	904
Other operating expense - impairment on equity method investment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Nonrecurring assets, loss	0	804	$ 686
Fair Value, Measurements, Nonrecurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans measured for impairment	561	848
Other assets - equity method investment		709
Total fair value assets	561	1,557
Fair Value, Measurements, Nonrecurring | Level 1 inputs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans measured for impairment	0	0
Other assets - equity method investment		0
Total fair value assets	0	0
Fair Value, Measurements, Nonrecurring | Level 2 inputs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans measured for impairment	0	0
Other assets - equity method investment		0
Total fair value assets	0	0
Fair Value, Measurements, Nonrecurring | Level 3 inputs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans measured for impairment	561	848
Other assets - equity method investment		709
Total fair value assets	$ 561	$ 1,557