Income Taxes, Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets [Abstract]
Allowance for Credit Losses	$ 15,925	$ 15,877
Accrued Liabilities	8,452	7,444
Deferred Compensation	14,200	11,207
State Franchise Tax	1,624	1,307
Tax Credit Carry Forward	1,266	0
Lease Liability	1,487	0
Acquired Net Operating Loss	673	715
Fair Value Adjustment on Loans Acquired	286	300
Fair Value Adjustment on ORE Acquired	108	108
Unrealized Loss on Securities Available-for-Sale	0	1,800
Low-Income Housing Investment	286	412
Other	2	7
Total Deferred Tax Assets	44,309	39,177
Deferred Tax Liabilities [Abstract]
Premises and Equipment	(1,974)	(2,226)
Securities Accretion	(370)	(229)
Unrealized Gain on Securities Available-for-Sale	(935)	0
Leasing Activities	(19,226)	(17,215)
Core Deposit Intangible Asset	(1,372)	(1,560)
ROU Lease Asset	(1,471)	0
Prepaid	(66)	(116)
Other	(898)	(1,000)
Total Deferred Tax Liabilities	(26,312)	(22,346)
Net Deferred Tax Assets	$ 17,997	$ 16,831
Tax Provision at Federal Statutory Rate	21.00%	21.00%	35.00%
Increase in income tax provision resulting from onetime re-measurement of deferred tax assets and deferred tax liabilities			$ 6,300