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CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-in Capital
AOCI Attributable to Parent
Retained Earnings
Treasury shares
Parent
Beginning balance (in shares) at Dec. 31, 2021   18,111          
Par value, beginning balance at Dec. 31, 2021   $ 25          
Beginning balance at Dec. 31, 2021 $ 1,223,552   $ 692,053 $ 2,056 $ 1,167,475 $ (638,057)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)   39          
Share-based compensation     6,929       $ 6,929
Stock issued under employee stock purchase plan (in shares)   30          
Stock issued under employee stock purchase plan           4,725 4,725
Other comprehensive income (loss) 688     688     688
Net income (loss)         (3,523)   (3,523)
Ending balance (in shares) at Jun. 30, 2022   18,180          
Par value, ending balance at Jun. 30, 2022   $ 25          
Ending balance at Jun. 30, 2022 1,232,371   698,982 2,744 1,163,952 (633,332)  
Beginning balance (in shares) at Mar. 31, 2022   18,119          
Par value, beginning balance at Mar. 31, 2022   $ 25          
Beginning balance at Mar. 31, 2022 1,222,296   695,323 5,411 1,159,594 (638,057)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)   31          
Share-based compensation     3,659       3,659
Stock issued under employee stock purchase plan (in shares)   30          
Stock issued under employee stock purchase plan           4,725 4,725
Other comprehensive income (loss) (2,667)     (2,667)     (2,667)
Net income (loss)         4,358   4,358
Ending balance (in shares) at Jun. 30, 2022   18,180          
Par value, ending balance at Jun. 30, 2022   $ 25          
Ending balance at Jun. 30, 2022 1,232,371   698,982 2,744 1,163,952 (633,332)  
Beginning balance (in shares) at Dec. 31, 2022   18,128          
Par value, beginning balance at Dec. 31, 2022 25 $ 25          
Beginning balance at Dec. 31, 2022 1,220,698   709,471 1,257 1,169,968 (660,023)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)   438          
Share-based compensation   $ 1 18,063       18,064
Shares repurchased by the Company and held as treasury shares (in shares)   (157)          
Shares repurchased by the Company and held as treasury shares           (15,433) (15,433)
Stock issued under employee stock purchase plan (in shares)   41          
Stock issued under employee stock purchase plan           4,232 4,232
Other comprehensive income (loss) 1,383     1,382     1,382
Net income (loss)         144,618   144,618
Ending balance (in shares) at Jun. 30, 2023   18,450          
Par value, ending balance at Jun. 30, 2023 26 $ 26          
Ending balance at Jun. 30, 2023 1,373,561   727,534 2,639 1,314,586 (671,224)  
Beginning balance (in shares) at Mar. 31, 2023   17,998          
Par value, beginning balance at Mar. 31, 2023   $ 25          
Beginning balance at Mar. 31, 2023 1,271,397   714,506 3,242 1,226,117 (672,493)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)   443          
Share-based compensation   $ 1 13,028       13,029
Shares repurchased by the Company and held as treasury shares (in shares)   (32)          
Shares repurchased by the Company and held as treasury shares           (2,963) (2,963)
Stock issued under employee stock purchase plan (in shares)   41          
Stock issued under employee stock purchase plan           4,232 4,232
Other comprehensive income (loss) (603)     (603)     (603)
Net income (loss)         88,469   $ 88,469
Ending balance (in shares) at Jun. 30, 2023   18,450          
Par value, ending balance at Jun. 30, 2023 26 $ 26          
Ending balance at Jun. 30, 2023 $ 1,373,561   $ 727,534 $ 2,639 $ 1,314,586 $ (671,224)