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UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss), Net of Taxes [Member]
Non-controlling Interest in Subsidiaries [Member]
Beginning Balance at Dec. 31, 2015 $ 854,638 $ 1,248 $ 526,148 $ 325,929 $ (1,763) $ 3,076
Beginning Balance (in shares) at Dec. 31, 2015   124,774,516        
Net income (loss) (111,201)     (111,331)   130
Repurchase of common stock (5,890) $ (10) (5,880)      
Repurchase of common stock (in shares)   (991,985)        
Exercise of common stock options 442 $ 1 441      
Exercise of common stock options (in shares)   69,805        
Equity-based compensation and other 1,513 $ 0 1,513      
Equity-based compensation and other (in shares)   1,347        
Capital distribution to non-controlling interest (1,139)         (1,139)
Other comprehensive income, net of income taxes 105       105  
Ending Balance at Mar. 31, 2016 738,468 $ 1,239 522,222 214,598 (1,658) 2,067
Ending Balance (in shares) at Mar. 31, 2016   123,853,683        
Beginning Balance at Dec. 31, 2016 $ 655,283 $ 1,240 527,001 126,167 (1,450) 2,325
Beginning Balance (in shares) at Dec. 31, 2016 123,988,160 123,988,160        
Net income (loss) $ (32,623)     (32,724)   101
Cumulative effect of adoption of FASB Accounting Standards Update No. 2016-09 0   284 (284)    
Equity-based compensation and other 707 $ 6 701      
Equity-based compensation and other (in shares)   589,009        
Other comprehensive income, net of income taxes 67       67  
Ending Balance at Mar. 31, 2017 $ 623,434 $ 1,246 $ 527,986 $ 93,159 $ (1,383) $ 2,426
Ending Balance (in shares) at Mar. 31, 2017 124,577,169 124,577,169