Income Taxes, Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets [Abstract]
Allowance for Credit Losses	$ 15,877	$ 14,962
Accrued Liabilities	7,444	7,421
Deferred Compensation	11,207	8,996
State Franchise Tax	1,307	850
Acquired Net Operating Loss	715	756
Fair Value Adjustment on Loans Acquired	300	242
Fair Value Adjustment on ORE Acquired	108	108
Unrealized Loss on Securities Available-for-Sale	1,800	373
Low-Income Housing Investment	412	470
Other	7	17
Total Deferred Tax Assets	39,177	34,195
Deferred Tax Liabilities [Abstract]
Premises and Equipment	(2,226)	(1,361)
Securities Accretion	(229)	(164)
Leasing Activities	(17,215)	(12,389)
Core Deposit Intangible Asset	(1,560)	(247)
Prepaid	(116)	(964)
Other	(1,000)	(944)
Total Deferred Tax Liabilities	(22,346)	(16,069)
Net Deferred Tax Assets	$ 16,831	$ 18,126
Tax Provision at Federal Statutory Rate	21.00%	35.00%	35.00%
Increase in income tax provision resulting from onetime re-measurement of deferred tax assets and deferred tax liabilities		$ 6,300