Note 19 - Parent Company Financial Information - Statements of Income, Comprehensive Income (Loss), and Changes in Shareholders' Equity (Details) (Parentheticals) - USD ($) $ in Thousands		12 Months Ended
	Aug. 26, 2020	Dec. 31, 2020
Shares issued under preferred stock offering (in shares)		2,000,000
Shares issued under preferred stock offering, offering costs		$ 1,675
Series A Preferred Stock [Member]
Shares issued under preferred stock offering (in shares)	2,000,000
Parent Company [Member] | Series A Preferred Stock [Member]
Shares issued under preferred stock offering (in shares)		2,000,000
Shares issued under preferred stock offering, offering costs		$ 1,675