Note 7 - Stockholders' Equity	12 Months Ended
Dec. 31, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	NOTE 7. STOCKHOLDERS’ EQUITY Common Stock Prior to the completion of the IPO, the Company’s common stock consisted of two classes: class A voting common stock (“Class A Shares”) and class B non-voting common stock (“Class B Shares”). In connection with the IPO, we (i) reclassified Class B Shares into a new class of voting common stock, which is the class of stock investors received in the IPO, and (ii) canceled the Class A Shares. Concurrent with this reclassification, and immediately prior to the consummation of the IPO, we effected a 1.5543 -for- 1 stock split of the Company’s new voting common stock such that existing stockholders each received 1.5543 shares of the new voting common stock described above in clause (i) for each share of Class B Shares they held at that time. Accordingly, all share and per share amounts for all periods presented in these financial statements and notes thereto have been adjusted retroactively, where applicable, to reflect the stock split. On January 30, 2018, the Company completed the IPO, in which it issued and sold 10,250,000 shares of common stock at a public offering price of $16.00 per share. On February 27, 2018, the Company sold an additional 1,537,500 shares of its common stock, pursuant to the underwriters’ exercise in full of the over-allotment option. The aggregate net proceeds received by the Company from the IPO were $171.5 million, after deducting underwriting discounts and commissions and offering expenses directly related to issuance of the equity. Prior to the consummation of the IPO, 170,712 shares of common stock were held by management. Pursuant to the Securityholders Agreement dated April 28, 2014 ( the “Securityholders Agreement”), these shares were outstanding, but were not considered issued for accounting purposes as they contained a substantive performance condition, a “Qualified Public Offering”, as defined in the Securityholders Agreement, which had to be probable for the holders of these shares to benefit from their ownership. The IPO satisfied the substantive performance condition and as a result the shares and related proceeds of $1.3 million were reclassified from other long-term liabilities to additional paid-in capital and considered issued for accounting purposes. As further clarification of the foregoing, prior to the IPO, shares were held by management that were subject to repurchase rights as outlined in Section 6 of the Securityholders Agreement, that were contingent on the holder’s termination. The repurchase rights enabled the Company to recover the shares issued to management without transferring any appreciation of the fair value of the stock to the holder upon certain terminations of the holder’s employment prior to a “Qualified Public Offering”, as defined in the Securityholders Agreement. If a holder’s employment was terminated by the Company prior to the consummation of a Qualified Public Offering for “Cause”, as defined in the Securityholders Agreement, or was terminated by such holder without “Good Reason”, as defined in the Securityholders Agreement, then the Company had the right to repurchase all or any portion of the shares held by the holder for the lesser of original cost or fair market value. If a holder’s employment was terminated by the Company prior to the consummation of a Qualified Public Offering other than as described above and in the Securityholders Agreement, then the Company had the right to repurchase all or any portion of the shares held by the holder for fair market value. During 2019, the board of directors approved a share repurchase program that will permit the Company to repurchase up to $50.0 million of the Company’s shares of common stock through August 11, 2021.

NOTE

STOCKHOLDERS’ EQUITY

Common Stock

Prior to the completion of the IPO, the Company’s common stock consisted of

two

classes: class A voting common stock (“Class A Shares”) and class B non-voting common stock (“Class B Shares”). In connection with the IPO, we (i) reclassified Class B Shares into a new class of voting common stock, which is the class of stock investors received in the IPO, and (ii) canceled the Class A Shares. Concurrent with this reclassification, and immediately prior to the consummation of the IPO, we effected a

1.5543

-for-

stock split of the Company’s new voting common stock such that existing stockholders each received

1.5543

shares of the new voting common stock described above in clause (i) for each share of Class B Shares they held at that time. Accordingly, all share and per share amounts for all periods presented in these financial statements and notes thereto have been adjusted retroactively, where applicable, to reflect the stock split.

January 30, 2018,

the Company completed the IPO, in which it issued and sold

10,250,000

shares of common stock at a public offering price of

$16.00

per share. On

February 27, 2018,

the Company sold an additional

1,537,500

shares of its common stock, pursuant to the underwriters’ exercise in full of the over-allotment option. The aggregate net proceeds received by the Company from the IPO were

$171.5

million, after deducting underwriting discounts and commissions and offering expenses directly related to issuance of the equity.

Prior to the consummation of the IPO,

170,712

shares of common stock were held by management. Pursuant to the Securityholders Agreement dated

April 28, 2014 (

the “Securityholders Agreement”), these shares were outstanding, but were

not

considered issued for accounting purposes as they contained a substantive performance condition, a “Qualified Public Offering”, as defined in the Securityholders Agreement, which had to be probable for the holders of these shares to benefit from their ownership. The IPO satisfied the substantive performance condition and as a result the shares and related proceeds of

$1.3

million were reclassified from other long-term liabilities to additional paid-in capital and considered issued for accounting purposes.

As further clarification of the foregoing, prior to the IPO, shares were held by management that were subject to repurchase rights as outlined in Section

of the Securityholders Agreement, that were contingent on the holder’s termination. The repurchase rights enabled the Company to recover the shares issued to management without transferring any appreciation of the fair value of the stock to the holder upon certain terminations of the holder’s employment prior to a “Qualified Public Offering”, as defined in the Securityholders Agreement. If a holder’s employment was terminated by the Company prior to the consummation of a Qualified Public Offering for “Cause”, as defined in the Securityholders Agreement, or was terminated by such holder without “Good Reason”, as defined in the Securityholders Agreement, then the Company had the right to repurchase all or any portion of the shares held by the holder for the lesser of original cost or fair market value. If a holder’s employment was terminated by the Company prior to the consummation of a Qualified Public Offering other than as described above and in the Securityholders Agreement, then the Company had the right to repurchase all or any portion of the shares held by the holder for fair market value.

During

2019,

the board of directors approved a share repurchase program that will permit the Company to repurchase up to

$50.0

million of the Company’s shares of common stock through

August 11, 2021.