Note F - Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	Year ended December 31,
	2019			2018			2017
Numerator:
Net income (loss)	$	(66,049	)	$	(2,146	)	$	73,951
Denominator:
Weighted average shares used to compute net income (loss) per share
Basic		19,982			19,647			19,097
Effect of dilutive options and restricted stock units		—			—			1,042
Diluted		19,982			19,647			20,139
Net income (loss) per share
Basic	$	(3.31	)	$	(0.11	)	$	3.87
Diluted	$	(3.31	)	$	(0.11	)	$	3.67

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

	As of As of December 31,
	2019		2018
Employee stock options		44		263
Restricted stock units		1		117
Shares for convertible senior notes		4,587		—
Total antidilutive shares		4,632		380