Note 24 - Earnings Per Common Share (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Jan. 31, 2019	May 10, 2017	Jan. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			1,834,142
Proceeds from Issuance of Common Stock					$ 26,778
Public Offering [Member]
Share Price		$ 10.50
Stock Issued During Period, Shares, New Issues		2,738,096
Proceeds from Issuance of Common Stock		$ 26,800
Subsequent Event [Member] | Merchants Holding Company [Member]
Payments to Acquire Businesses, Gross	$ 15,300		$ 15,300
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	1,834,142		1,834,142