Note 14 - Equity

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

14

. Equity

The tables below present changes in stockholders' equity for the

three

months ended

March 31, 2020

and

2019

.

	Common Stock						Additional Paid-in			Accumulated			Other Comprehensive		Total Stockholders'
	Shares			Amount			Capital			Deficit			Income		Equity
Balances at December 31, 2019		81,269,868		$	8,127		$	220,808,037		$	(123,032,408	)	$	—	$	97,783,756
Net loss					—			—			(8,897,529	)		—		(8,897,529	)
Repurchase of common stock		(225,094	)		(22	)		—			(993,353	)		—		(993,375	)
Payment of common stock tendered for employee stock-based compensation tax obligations		(1,892	)		—			(9,746	)		—			—		(9,746	)
Issuance of common stock upon vesting of RSUs		4,542			—						—			—		-
Stock-based compensation		—			—			259,016			—			—		259,016
Balances at March 31, 2020		81,047,424		$	8,105		$	221,057,307		$	(132,923,290	)	$	—	$	88,142,122

	Common Stock						Additional Paid-in			Accumulated			Other Comprehensive		Total Stockholders'
	Shares			Amount			Capital			Deficit			Income		Equity
Balances at December 31, 2018		80,763,350		$	8,076		$	218,697,872		$	(115,791,261	)	$	—	$	102,914,687
Net income		—			—			—			1,629,777			—		1,629,777
Issuance of common stock upon exercise of stock options		9,769			1			(1	)		—			—		—
Issuance of common stock upon exercise of stock-settled appreciation rights		16,771			2			(2	)		—			—		—
Issuance of common stock upon exercise of warrants		159,782			16			1,172,785			—			—		1,172,801
Payment of common stock tendered for employee stock-based compensation tax obligations		(8,148	)		(1	)		(56,589	)		—			—		(56,590	)
Stock-based compensation		—			—			408,894			—			—		408,894
Balances at March 31, 2019	$	80,941,524		$	8,094		$	220,222,959		$	(114,161,484	)	$	—	$	106,069,569

On

March 5, 2020,

the Company announced that the board of directors had authorized a share repurchase program under which the Company

may

repurchase, from time to time, up to an aggregate of

$50

million of the Company's common stock through

December 31, 2021. 

The timing and actual number of shares repurchased will depend on a variety of factors, including: exercise of procurement options under government contracts; alternative opportunities for strategic uses of cash; the stock price of the Company’s common stock; market conditions; and other corporate liquidity requirements and priorities.  Repurchases under the program

may

be made from time to time at the Company’s discretion in open market transactions, through block trades, in privately negotiated transactions, and pursuant to any trading plan that

may

be adopted by the Company’s management in accordance with Rule

10b5

-

1

of the Securities Exchange Act of

1934,

as amended, or otherwise. During the

three

-month period ended

March 31, 2020,

the Company repurchased

225,094

 shares of common stock for approximately

$1

million.