Income Tax - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Assets:
Differences in Accounting for Loan Losses	$ 19,717	$ 19,785
Differences in Accounting for Loan Fees	442	749
Differences in Accounting for Loans and Securities	0	710
Deferred Compensation	4,436	2,101
Federal & State Income Tax Loss Carryforward and Credits	6,205	6,954
Net Unrealized Loss on Securities Available for Sale	0	1,686
Other	3,499	2,028
Total Assets	34,299	34,013
Liabilities:
Differences in Depreciation Methods	5,240	6,496
Differences in Accounting for Loans and Securities	1,192	0
Difference in Accounting for Pensions and Other Employee Benefits	1,556	566
State Income Tax	778	791
Net Unrealized Gain on Securities Available for Sale	10,333	0
Gain on FDIC Modified Whole Bank Transaction	413	487
Other	6,506	4,271
Total Liabilities	26,018	12,611
Net Deferred Tax Asset Before Valuation Allowance	8,281	21,402
Valuation allowance:
Beginning Balance	0	(6,966)
Decrease/(Increase) During the Year	0	6,966
Ending Balance	0	0
Net Deferred Tax Asset	$ 8,281	$ 21,402