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Note 14 - Equity (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

		*Common Stock*								*Additional Paid-in*				*Accumulated*				*Other Comprehensive*				*Total Stockholders'*
		*Shares*				*Amount*				*Capital*				*Deficit*				*Income*				*Equity*
Balances at March 31, 2020			81,047,424			$	8,105			$	221,057,307			$	(132,923,290	)		$	—			$	88,142,122
Net income							—				—				20,890,158				—				20,890,158
Repurchase of common stock			(2,548,681	)			(255	)			—				(15,222,540	)			—				(15,222,795	)
Payment of common stock tendered for employee stock-based compensation tax obligations			—				—				—				—				—				—
Issuance of common stock upon vesting of RSUs			120,000				12				(12	)			—				—				—
Stock-based compensation			—				—				323,533				—				—				323,533
Balances at June 30, 2020			78,618,743			$	7,862			$	221,380,828			$	(127,255,672	)		$	—			$	94,133,018

		*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 income			—				—				—				11,992,629				—				11,992,629
Repurchase of common stock			(2,773,775	)			(277	)			—				(16,215,893	)			—				(16,216,170	)
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			124,542				12				(12	)			—				—				-
Stock-based compensation			—				—				582,549				—				—				582,549
Balances at June 30, 2020			78,618,743			$	7,862			$	221,380,828			$	(127,255,672	)		$	—			$	94,133,018

		*Common Stock*								*Additional Paid-in*				*Accumulated*				*Other Comprehensive*				*Total Stockholders'*
		*Shares*				*Amount*				*Capital*				*Deficit*				*Income*				*Equity*
Balances at March 31, 2019			80,941,524			$	8,094			$	220,222,959			$	(114,161,484	)		$	—			$	106,069,569
Net loss			—				—				—				(3,162,492	)			—				(3,162,492	)
Issuance of common stock upon vesting of RSUs			105,000				11				(11	)			—				—				—
Stock-based compensation			—				—				547,390				—				—				547,390
Balances at June 30, 2019		$	81,046,524			$	8,105			$	220,770,338			$	(117,323,976	)		$	—			$	103,454,467

		*Common Stock*								*Additional Paid-in*				*Accumulated*				*Other Comprehensive*				*Total Stockholders'*
		*Shares*				*Amount*				*Capital*				*Deficit*				*Income*				*Deficiency*
Balances at December 31, 2018			80,763,350			$	8,076			$	218,697,872			$	(115,791,261	)		$	—			$	102,914,687
Net loss			—				—				—				(1,532,715	)			—				(1,532,715	)
Issuance of common stock upon exercise of stock options			9,769				1				(1	)			—				—				—
Issuance of common stock upon vesting of RSUs and exercise of stock-settled appreciation rights			121,771				13				(13	)			—				—				—
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			—				—				956,284				—				—				956,284
Balances at June 30, 2019			81,046,524			$	8,105			$	220,770,338			$	(117,323,976	)		$	—			$	103,454,467