Note 3 - (Loss) Earnings Per Share - Net (Loss) Earnings Per Loss (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net (loss) earnings	$ (2,856)	$ 319
Weighted–average shares outstanding (in shares)	20,152,029	19,571,947
Weighted–average shares outstanding with dilution (in shares)	20,152,029	19,709,356
Basic (in dollars per share)	$ (0.14)	$ 0.02
Diluted (in dollars per share)	$ (0.14)	$ 0.02
Share-based Payment Arrangement, Option [Member]
Dilutive effect of share-based awards (in shares)
Restricted Stock [Member]
Dilutive effect of share-based awards (in shares)		137,409