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Note 10 - Common Stock, Treasury Stock and Warrants | 12 Months Ended
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Dec. 31, 2020
Notes to Financial Statements |
Stockholders' Equity Note Disclosure [Text Block] | 10. Common stock, treasury stock and warrants Common stock As of December 31, 2020, 2019 and 2018, the number of issued shares of common stock was 80,295,141, 78,642,078 and 76,525,581, respectively, which included shares of treasury stock of 3,945,867, 2,768,399 and 1,233,198, respectively. For the year ended December 31, 2020, the change in the number of issued shares of common stock comprised the following issuances:
• | An aggregate of 1,653,063 shares of common stock were issued as a result of the vesting of RSUs and included 219,795 shares of common stock withheld to cover withholding taxes upon such vesting, which are reflected as additions to treasury stock in the consolidated statements of changes in shareholders' equity.
• | Additionally, as discussed and defined below, the holders of the Amended Whitehorse Warrants exercised the Put Right to require the Company to purchase from the warrant holders the 300,000 Warrant Shares for an aggregate of $1,150. The Company funded such purchase with cash on hand.
For the year ended December 31, 2019, the change in the number of issued shares of common stock comprised the following issuances:
• | An aggregate of 2,116,497 shares of common stock were issued as a result of the vesting of RSUs and included 567,447 shares of common stock withheld to cover withholding taxes upon such vesting, which are reflected as additions to treasury stock in the consolidated statements of changes in shareholders' equity.
Treasury stock As of December 31, 2020, 2019 and 2018, the Company held 3,945,867, 2,768,399 and 1,233,198 shares in treasury, with a cost of $9,999, $8,184 and $3,272, respectively. The Company's share-based incentive plans allow employees the option to either make cash payment or forfeit shares of common stock upon vesting to satisfy federal and state statutory tax withholding obligations associated with equity awards. The forfeited shares of common stock may be taken into treasury stock by the Company or sold on the open market. For the year ended December 31, 2020, 219,795 shares were withheld to cover withholding taxes owed by certain employees, all of which were taken into treasury stock. During the year ended December 31, 2020,the Company repurchased 657,673 of its own shares as part of a stock repurchase program authorized by the Company's Board of Directors on November 19, 2019, and 300,000 shares of common stock upon exercise of the Put Right (see Warrants, below) For the year ended December 31, 2019, 567,447 shares were withheld to cover withholding taxes owed by certain employees, all of which were taken into treasury stock. During the year ended December 31, 2019, the Company repurchased 967,754 of its own shares as part of a stock repurchase program authorized by the Company's Board of Directors on November 19, 2019. Warrants As of December 31, 2020, 2019 and 2018, warrants to purchase an aggregate of 833,333, 2,398,776 and 2,498,776 shares of common stock were outstanding, respectively. The current exercise prices for outstanding issuances range from 3.75 to 6.00 per share. On July 9, 2018 the Company entered into First Amendments (the "First Amendments") to the Amendments to Warrants and Agreements to Exercise ("Amended Whitehorse Warrants") with (i) H.I.G. Whitehorse SMA ABF, L.P. regarding 46,667 warrants to purchase common stock of the Company, par value $0.0005 per share, at an exercise price of $3.00 per share; (ii) H.I.G. Whitehorse SMA Holdings I, LLC regarding 66,666 warrants to purchase common stock of the Company at an exercise price of $3.00 per share; and (iii) Whitehorse Finance, Inc. regarding 186,667 warrants to purchase common stock of the Company at an exercise price of $3.00 per share. In November 2017, the Amended Whitehorse Warrants were exercised and the Company issued an aggregate of 300,000 shares of common stock of the Company (the "Warrant Shares") to the warrant holders. Pursuant to the First Amendments, the warrant holders had the right, but not the obligation, to require the Company to purchase from these warrant holders the 300,000 Warrant Shares at $3.8334 per share (the "Put Right"), which could be exercised during the period commencing January 1, 2019 and ending December 15, 2019. On December 6, 2019, the Company entered into the Second Amendments to the Amended Whitehorse Warrants, pursuant to which the expiration of the Put Right was extended from December 15, 2019 to January 31, 2020. On January 31, 2020, the holders of the Amended Whitehorse Warrants exercised the Put Right, requiring the Company to purchase from the warrant holders the 300,000 Warrant Shares for an aggregate of $1,150. The Company funded such purchase with cash on hand. Preferred stock As of December 31, 2020 and 2019, the Company had 10 million shares of blank-check preferred stock with par value of $0.0001 per share authorized. No shares of preferred stock have been issued or are outstanding.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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