Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited)

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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)
Total
Adjustment
Common Stock
Additional paid in capital
Accumulated other comprehensive loss
Retained earnings (Accumulated deficit)
Retained earnings (Accumulated deficit)
Adjustment
Balance at beginning of period (shares) at Dec. 31, 2019     16,823,000        
Balance at beginning of period at Dec. 31, 2019 $ 767,232,000 $ (5,167,000) $ 17,000 $ 367,326,000 $ (216,000) $ 400,105,000 $ (5,167,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under employee stock compensation plans, net (shares)     105,000        
Issuance of common stock under employee stock compensation plans, net (1,008,000)     (1,008,000)      
Share-based compensation 5,653,000     5,653,000      
Repurchase of common stock (shares)     (878,000)        
Repurchase of common stock (73,287,000)   $ (1,000) (73,286,000)      
Unrealized net gain (loss) on available-for-sale securities, net of deferred tax (2,772,000)       (2,772,000)    
Foreign currency translation adjustment (1,879,000)       (1,879,000)    
Reacquisition of equity due to 2023 debt extinguishment, net of tax (2,745,000)     (2,745,000)      
Net income (loss) (24,131,000)         (24,131,000)  
Balance at end of period (shares) at Mar. 31, 2020     16,050,000        
Balance at end of period at Mar. 31, 2020 661,896,000   $ 16,000 295,940,000 (4,867,000) 370,807,000  
Balance at beginning of period (shares) at Dec. 31, 2019     16,823,000        
Balance at beginning of period at Dec. 31, 2019 767,232,000 $ (5,167,000) $ 17,000 367,326,000 (216,000) 400,105,000 $ (5,167,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) (2,045,000)            
Balance at end of period (shares) at Jun. 30, 2020     16,071,000        
Balance at end of period at Jun. 30, 2020 695,003,000   $ 16,000 304,404,000 (2,310,000) 392,893,000  
Balance at beginning of period (shares) at Mar. 31, 2020     16,050,000        
Balance at beginning of period at Mar. 31, 2020 661,896,000   $ 16,000 295,940,000 (4,867,000) 370,807,000  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under employee stock compensation plans, net (shares)     21,000        
Issuance of common stock under employee stock compensation plans, net 1,128,000     1,128,000      
Share-based compensation 7,359,000     7,359,000      
Unrealized net gain (loss) on available-for-sale securities, net of deferred tax 2,742,000       2,742,000    
Foreign currency translation adjustment (185,000)       (185,000)    
Adjustment on reacquisition of equity due to 2023 debt extinguishment, net of tax (23,000)     (23,000)      
Net income (loss) 22,086,000         22,086,000  
Balance at end of period (shares) at Jun. 30, 2020     16,071,000        
Balance at end of period at Jun. 30, 2020 695,003,000   $ 16,000 304,404,000 (2,310,000) 392,893,000  
Balance at beginning of period (shares) at Dec. 31, 2020     16,080,000        
Balance at beginning of period at Dec. 31, 2020 709,525,000   $ 16,000 318,358,000 (801,000) 391,952,000  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under employee stock compensation plans, net (shares)     572,000        
Issuance of common stock under employee stock compensation plans, net 20,581,000   $ 1,000 20,580,000      
Share-based compensation 8,405,000     8,405,000      
Unrealized net gain (loss) on available-for-sale securities, net of deferred tax (55,000)       (55,000)    
Reacquisition of equity due to 2023 debt extinguishment, net of tax (9,086,000)     (9,086,000)      
Warrant and bond hedge unwind transactions 396,000     396,000      
Tax effect for 2023 Notes transactions (2,032,000)     (2,032,000)      
Net income (loss) 18,106,000         18,106,000  
Balance at end of period (shares) at Mar. 31, 2021     16,652,000        
Balance at end of period at Mar. 31, 2021 745,840,000   $ 17,000 336,621,000 (856,000) 410,058,000  
Balance at beginning of period (shares) at Dec. 31, 2020     16,080,000        
Balance at beginning of period at Dec. 31, 2020 709,525,000   $ 16,000 318,358,000 (801,000) 391,952,000  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Repurchase of common stock 0            
Net income (loss) 48,831,000            
Balance at end of period (shares) at Jun. 30, 2021     16,676,000        
Balance at end of period at Jun. 30, 2021 786,517,000   $ 17,000 346,578,000 (861,000) 440,783,000  
Balance at beginning of period (shares) at Mar. 31, 2021     16,652,000        
Balance at beginning of period at Mar. 31, 2021 745,840,000   $ 17,000 336,621,000 (856,000) 410,058,000  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under employee stock compensation plans, net (shares)     24,000        
Issuance of common stock under employee stock compensation plans, net 1,103,000     1,103,000      
Share-based compensation 10,216,000     10,216,000      
Unrealized net gain (loss) on available-for-sale securities, net of deferred tax (5,000)       (5,000)    
Reacquisition of equity due to 2023 debt extinguishment, net of tax (1,073,000)     (1,073,000)      
Tax effect for 2023 Notes transactions (289,000)     (289,000)      
Net income (loss) 30,725,000         30,725,000  
Balance at end of period (shares) at Jun. 30, 2021     16,676,000        
Balance at end of period at Jun. 30, 2021 $ 786,517,000   $ 17,000 $ 346,578,000 $ (861,000) $ 440,783,000