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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common stock
Additional Paid-In Capital
Adjustment.
Additional Paid-In Capital
Treasury Stock
Accumulated Deficit
Adjustment.
Accumulated Deficit
Adjustment.
Total
Balance at beginning of period at Dec. 31, 2019 $ 34   $ 447,297     $ (359,899)   $ 87,432
Balance at beginning of period, shares at Dec. 31, 2019 33,678,840              
Exercise of common stock options $ 1   6,656         6,657
Exercise of common stock options, shares 637,924              
Issuance for employee stock purchase plan     758         758
Issuance for employee stock purchase plan, shares 67,512              
Vesting of RSUs and PSUs, shares 335,524              
Shares withheld for employee taxes upon vesting of RSUs and PSUs     (2,255)         (2,255)
Shares withheld for employee taxes upon vesting of RSUs and PSUs, shares (107,746)              
Stock-based compensation     21,910         21,910
Equity component of 2020 Convertible Notes, net of issuance costs     44,777         44,777
Net (loss) income           26,752   26,752
Balance at end of period at Dec. 31, 2020 $ 35 $ (44,777) 519,143   $ 5,288 (333,147) $ (39,489) 186,031
Balance at end of period, shares at Dec. 31, 2020 34,612,054              
Exercise of common stock options $ 1   11,868         11,869
Exercise of common stock options, shares 803,485              
Issuance for employee stock purchase plan     755         755
Issuance for employee stock purchase plan, shares 43,719              
Vesting of RSUs and PSUs, shares 511,743              
Shares withheld for employee taxes upon vesting of RSUs and PSUs     (4,149)         (4,149)
Shares withheld for employee taxes upon vesting of RSUs and PSUs, shares (164,882)              
Share repurchases       $ (42,861)       (42,861)
Share repurchases (in shares)       (2,150,717)        
Forward contract on ASR agreement     (5,000)         (5,000)
Stock-based compensation     24,255         24,255
Net (loss) income           71,517   71,517
Balance at end of period at Dec. 31, 2021 $ 36   502,095 $ (42,861)   (256,342)   $ 202,928
Balance at end of period, shares at Dec. 31, 2021 35,806,119             35,806,119
Balance at end of period, shares at Dec. 31, 2021       (2,150,717)       (2,150,717)
Exercise of common stock options     11,811         $ 11,811
Exercise of common stock options, shares 742,348              
Issuance for employee stock purchase plan     337         337
Issuance for employee stock purchase plan, shares 22,627              
Vesting of RSUs and PSUs $ 1             1
Vesting of RSUs and PSUs, shares 699,285              
Shares withheld for employee taxes upon vesting of RSUs and PSUs     (4,044)         (4,044)
Shares withheld for employee taxes upon vesting of RSUs and PSUs, shares (226,286)              
Share repurchases     5,000 $ (19,063)       (14,063)
Share repurchases (in shares)       (1,085,106)        
Exercise of warrant 40,666              
Stock-based compensation     22,874         22,874
Net (loss) income           (25,002)   (25,002)
Balance at end of period at Dec. 31, 2022 $ 37   $ 538,073 $ (61,924)   $ (281,344)   $ 194,842
Balance at end of period, shares at Dec. 31, 2022 37,084,759             37,084,759
Balance at end of period, shares at Dec. 31, 2022       (3,235,823)       (3,235,823)