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

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	2016		2015
Commercial unused lines of credit	$	553,345,000	$	522,658,000
Unused lines of credit secured by 1 – 4 family residential properties		56,275,000		61,905,000
Credit card unused lines of credit		22,689,000		15,612,000
Other consumer unused lines of credit		8,489,000		8,583,000
Commitments to make loans		154,338,000		178,034,000
Standby letters of credit		26,202,000		34,946,000
Total commitments	$	821,338,000	$	821,738,000

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

	2016				2015
	Contract		Carrying		Contract		Carrying
	Amount		Value		Amount		Value
Standby letters of credit	$	26,202,000	$	156,000	$	34,946,000	$	182,000