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Consolidated Statements of Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Earnings [Member]
Accumulated Other Comprehensive (Loss) Income [Member]
Noncontrolling Interests [Member]
Balance (in shares) at Dec. 31, 2012   23,191        
Balance at Dec. 31, 2012 $ 405,816 $ 232 $ 88,029 $ 319,329 $ (1,774) $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 74,907     75,299   (392)
Other comprehensive (loss) gain, net of tax 7,320       6,969 351
Initial noncontrolling interests related to business combinations 4,051         4,051
Change in fair value of redeemable noncontrolling interests (1,167)   (1,167)      
Exercise of stock options and issuance of share-based awards, net of shares withheld for employee taxes (in shares)   618        
Exercise of stock options and issuance of share-based awards, net of shares withheld for employee taxes $ (4,967) $ 6 (4,973)      
Issuance of common stock (in shares) 1,672          
Issuance of common stock $ 62,352 $ 17 62,335      
Repurchase of common stock (in shares)   (24)        
Repurchase of common stock (729) $ 0 (729)      
Stock-based compensation 12,649   12,649      
Tax benefit related to stock-based compensation 5,420   5,420      
Issuance of convertible notes, net of hedge transactions 10,255   10,255      
Balance (in shares) at Dec. 31, 2013   25,457        
Balance at Dec. 31, 2013 575,907 $ 255 171,819 394,628 5,195 4,010
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 102,791     103,726   (935)
Other comprehensive (loss) gain, net of tax (6,103)       (6,117) 14
Initial noncontrolling interests related to business combinations 892         892
Change in fair value of redeemable noncontrolling interests (5,730)   (5,730)      
Exercise of stock options and issuance of share-based awards, net of shares withheld for employee taxes (in shares)   737        
Exercise of stock options and issuance of share-based awards, net of shares withheld for employee taxes (15,489) $ 7 (15,496)      
Repurchase of common stock (in shares)   (400)        
Repurchase of common stock (16,815) $ (4) (16,811)      
Stock-based compensation 17,181   17,181      
Tax benefit related to stock-based compensation 11,580   11,580      
Issuance of convertible notes, net of hedge transactions (28,160)   (28,160)      
Reclassification of redeemable equity component of convertible senior notes (9,073)   (9,073)      
Balance (in shares) at Dec. 31, 2014   25,794        
Balance at Dec. 31, 2014 626,981 $ 258 125,310 498,354 (922) 3,981
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 46,013     45,135   878
Other comprehensive (loss) gain, net of tax (56,900)       (56,900)  
Initial noncontrolling interests related to business combinations 2,426         2,426
Change in fair value of redeemable noncontrolling interests (2,349)   (2,349)      
Exercise of stock options and issuance of share-based awards, net of shares withheld for employee taxes (in shares)   333        
Exercise of stock options and issuance of share-based awards, net of shares withheld for employee taxes (5,318) $ 3 (5,321)      
Repurchase of common stock (in shares)   (839)        
Repurchase of common stock (33,185) $ (8) (33,177)      
Stock-based compensation 22,008   22,008      
Tax benefit related to stock-based compensation 1,251   1,251      
Reclassification of redeemable equity component of convertible senior notes 2,948   2,948      
Other (137)   (137)      
Balance (in shares) at Dec. 31, 2015   25,288        
Balance at Dec. 31, 2015 $ 603,738 $ 253 $ 110,533 $ 543,489 $ (57,822) $ 7,285