Quarterly report [Sections 13 or 15(d)]

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED)

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Deficit [Member]
Accumulated Deficit [Member]
Cumulative Effect, Period of Adoption, Adjustment
Treasury Stock, Common
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interest [Member]
Redeemable Noncontrolling Interests [Member]
Balances (in shares) at Dec. 31, 2023     229,785,241                
Balances at Dec. 31, 2023 $ 552,000   $ 2,298 $ 2,367,918   $ (2,443,106)   $ (6,865) $ 27,450 $ 604,305  
Equity [Roll Forward]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period     0                
Non-cash and stock-based compensation 36,665     36,665              
Common stock issued under stock plans, net of shares withheld for employee taxes (in shares)     348,102                
Common stock issued under stock plans, net of shares withheld for employee taxes (25,483)   $ 3 (25,486)              
Exercise of stock options, net of shares withheld for option cost and employee taxes (in shares)     64,364                
Exercise of stock options 1,787   $ 1 1,786              
Acquisitions 16,687                 16,687  
Purchases of noncontrolling interests 2,251     2,260           (9)  
Redeemable noncontrolling interests fair value adjustments (74,548)     (74,548)              
Contributions received 0                 0  
Cash distributions (48,832)                 (48,832)  
Other 2,106                 2,106  
Comprehensive income (loss):                      
Net income (loss) (44,713)         (54,475)       9,762  
Unrealized gain (loss) on cash flow hedge 8,369               8,369    
Realized gain on cash flow hedge (4,730)               (4,730)    
Foreign currency translation adjustments 4,729               4,729   $ 0
Balances at Mar. 31, 2024 426,288   $ 2,302 2,308,595   (2,497,581)   (6,865) 35,818 584,019  
Balances (in shares) at Mar. 31, 2024     230,197,707                
Balances at Dec. 31, 2023                     859,930
Redeemable Noncontrolling Interests [Roll Forward]                      
Acquisitions                     30,681
Purchases of noncontrolling interests                     (12,216)
Redeemable noncontrolling interests fair value adjustments                     74,966
Contribution received                     28
Cash distributions                     (7,330)
Other                     (1,042)
Comprehensive income (loss):                      
Net income (loss)                     2,008
Balances at Mar. 31, 2024                     947,025
Balances (in shares) at Dec. 31, 2024     231,295,639                
Balances at Dec. 31, 2024 818,993 $ 8,869 $ 2,313 2,059,746 $ 0 (1,546,819) $ 8,869 (6,865) (335,112) 645,730  
Equity [Roll Forward]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period     0                
Non-cash and stock-based compensation 30,153     30,153              
Common stock issued under stock plans, net of shares withheld for employee taxes (in shares)     566,246                
Common stock issued under stock plans, net of shares withheld for employee taxes (65,009)   $ 6 (65,015)              
Exercise of stock options, net of shares withheld for option cost and employee taxes (in shares)     113,393                
Exercise of stock options 2,606   $ 1 2,605              
Conversion of convertible debt (in shares)     182,560                
Repurchase of 2.0% convertible senior notes due 2025 (2)   $ 2 (4)              
Acquisitions 64,942                 64,942  
Purchases of noncontrolling interests (684)     (2,210)           1,526  
Redeemable noncontrolling interests fair value adjustments (119,130)     (119,130)              
Contributions received 1,593                 1,593  
Cash distributions (28,107)                 (28,107)  
Other (7,243)     0   0       (7,243)  
Comprehensive income (loss):                      
Net income (loss) 36,572         23,203       13,369  
Unrealized gain (loss) on cash flow hedge (1,504)               (1,504)    
Realized gain on cash flow hedge (3,336)               (3,336)    
Foreign currency translation adjustments 59,092               59,092 0 0
Balances at Mar. 31, 2025 797,805   $ 2,322 $ 1,906,145   $ (1,514,747)   $ (6,865) $ (280,860) $ 691,810  
Balances (in shares) at Mar. 31, 2025     232,157,838                
Balances at Dec. 31, 2024 1,126,302                   1,126,302
Redeemable Noncontrolling Interests [Roll Forward]                      
Acquisitions                     60,020
Purchases of noncontrolling interests                     (8,996)
Redeemable noncontrolling interests fair value adjustments                     119,295
Contribution received                     3,019
Cash distributions                     (5,635)
Other                     7,820
Comprehensive income (loss):                      
Net income (loss)                     9,730
Balances at Mar. 31, 2025 $ 1,311,555                   $ 1,311,555
Comprehensive income (loss):                      
Stock Issued During Period, Shares, Other     0