Goodwill and Intangible Assets Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Total Amortization Expense [Abstract]
Amortization of intangible assets	$ 1,295	$ 1,356
Estimated Amortization Expense [Abstract]
For period 4/01/20-12/31/20	3,674
For year ended 12/31/20	4,285
For year ended 12/31/21	3,919
For year ended 12/31/22	3,498
For year ended 12/31/23	2,946
For year ended 12/31/24	2,633
Core Deposits [Member]
Total Amortization Expense [Abstract]
Amortization of intangible assets	843	980
Customer Lists [Member]
Total Amortization Expense [Abstract]
Amortization of intangible assets	326	318
Mortgage Servicing Rights [Member]
Total Amortization Expense [Abstract]
Amortization of intangible assets	$ 126	$ 58