Note 9 - Basic and Diluted (Loss) Income Per Share (Details Textual) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Weighted Average Number Diluted Shares Outstanding Adjustment, Total (in shares)	0		0
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	654,906	708,921	675,055	565,117
Share-based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)		800,394	65,181	847,754