Note 12 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
	Apr. 27, 2021	Mar. 31, 2021	Mar. 31, 2020	Feb. 23, 2021
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.110	$ 0.095
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.11
Dividends Payable	$ 2.3
Dividends Payable, Date to be Paid	Jun. 03, 2021
Dividends Payable, Date of Record	May 19, 2021
Common Stock [Member]
Treasury Stock, Shares, Acquired (in shares)
Stock Repurchase Program [Member] | Common Stock [Member]
Stock Repurchase Program, Authorized Amount				$ 15.0
Treasury Stock, Shares, Acquired (in shares)		0