Note 14 - Commitments and Off-balance Sheet Risk (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Summary of Contractual Amounts of Financial Instruments With Off Balance Sheet Risk [Table Text Block]

	2019		2018
Commercial unused lines of credit	$	776,493,000	$	784,895,000
Unused lines of credit secured by 1 – 4 family residential properties		60,858,000		57,378,000
Credit card unused lines of credit		58,199,000		47,432,000
Other consumer unused lines of credit		18,135,000		20,231,000
Commitments to make loans		101,961,000		101,517,000
Standby letters of credit		22,798,000		25,322,000
Total commitments	$	1,038,444,000	$	1,036,775,000

Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]

	2019				2018
	Contract		Carrying		Contract		Carrying
	Amount		Value		Amount		Value
Standby letters of credit	$	22,798,000	$	160,000	$	25,322,000	$	126,000