Note 2 - Earnings Per Share (Details Textual) - shares shares in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.2	0.2
Share-based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		0.2
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		10.1