Note 5 - Net Income (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Shares used in basic earnings per share calculation		40,284		40,786		40,311		40,689
Effect of dilutive securities:
Stock options		24		436		55		-
Restricted stock/Deferred stock units		-		-		-		-
Total effects of dilutive securities		24		436		55		-
Shares used in dilutive earnings per share calculation		40,308		41,222		40,366		40,689

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Anti-dilutive securities
Stock options		-		62		-		2,114