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

9 Months Ended

Sep. 30, 2020

Notes Tables

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

	Three months ended September 30,				Nine months ended September 30,
	2020		2019		2020		2019
Deerfield Convertible Note		1,275,971		1,192,918		1,275,971		1,192,918
2021 Notes*		—		31,166,835		—		31,166,835
January 2020 Note		544,599		—		544,599		—
December 2019 Notes		9,844,933		—		9,844,933		—
Awards under equity incentive plans		5,670,659		4,620,891		5,670,659		4,620,891
Common stock warrants		2,423,077		500,000		2,423,077		2,423,077
Series A Convertible Preferred Stock		—		—		—		1,112,334
Series B-1 Convertible Preferred Stock		—		—		—		831,051
Total securities excluded from the calculation of weighted average number of shares of common stock outstanding		19,759,239		37,480,644		19,759,239		41,347,106
* Inclusive of 28,439,015 shares of Common Stock issuable (i) in exchange of the Optional Exchange Principal Amount, or (ii) upon conversion of the Series B-2 Preferred Stock issuable in exchange of the Optional Exchange Principal Amount.

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

	Three months ended
	September 30, 2019
Basic net income per share of common stock:
Net income	$	3,063
Less: Net income attributable to participating securities		(348	)
Net income attributable to shares of common stock		2,715
Less: Dividends declared or accumulated		—
Undistributed net income attributable to shares of common stock, basic	$	2,715
Weighted average number of shares of common stock outstanding		30,127
Basic net income per share of common stock	$	0.09
Diluted net income per share of common stock:
Net income	$	3,063
Less: Fair value adjustment income related to Deerfield Warrant liability		(1,019	)
Less: Fair value adjustment income related to embedded Warrant Put Option		(135	)
Less: Fair value adjustment income related to KVK Warrant liability		—
Net income attributable to shares of common stock, diluted	$	1,909
Weighted average number of shares of common stock outstanding		30,127
Dilutive effect of Deerfield Warrant		—
Dilutive effect of Series A Preferred		1,112
Dilutive effect of Series B-1 Preferred		433
Weighted average number of shares of common stock outstanding, diluted		31,672
Diluted net income per share of common stock	$	0.06