Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Line Items]
Average required reserve balance		$ 89,200	$ 73,900
Compensating Balance, Amount		$ 0
Allowance for Loan and Lease Losses, Reserve Estimate Methodology, Historical Loss Period Factor	120 months	120 months	108 months
Other Repossessed Assets		$ 4,200	$ 4,000
Finite-Lived Intangible Assets, Accumulated Amortization		4,233	578
Trade Names [Member]
Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization		$ 1,300	$ 0
Commercial Portfolio Segment [Member]
Accounting Policies [Line Items]
Reserve coverage period in historical losses		3 years 4 months 24 days	3 years 4 months 20 days
FinancingReceivableAllowanceForCreditLosses Historical Loss Experience		0.34	0.35
Consumer Portfolio Segment [Member]
Accounting Policies [Line Items]
Reserve coverage period in historical losses		1 year 10 months 24 days	1 year 10 months 13 days
FinancingReceivableAllowanceForCreditLosses Historical Loss Experience		0.31	0.33