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Equity-Based Compensation - Activity related to Plans (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 15, 2016
Jan. 04, 2016
Aug. 31, 2014
Feb. 28, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Additional Disclosures                
Total equity-based compensation expense         $ 17,237 $ 8,625 $ 8,004  
Other Equity Compensation Plan Outside The 2007 Plan [Member]                
Additional Disclosures                
Number of options and restricted stock units granted since inception (in shares)               1,646,250
Number of stock options expired or terminated since inception (in shares)               243,875
Number of restricted stock units forfeited since inception (in shares)               90,001
Stock options exercised since inception (in shares)               186,250
Shares of common stock issued pursuant to vested restricted stock units since inception         139,474      
Employee and Non Employee Stock Option                
Options                
Outstanding at beginning of period (in shares)         2,996,383      
Granted (in shares)         1,215,675      
Exercised (in shares)         (836,450)      
Expired and/or forfeited (in shares)         (471,431)      
Outstanding at end of period (in shares)         2,904,177 2,996,383    
Additional Disclosures                
Expense recognition period         3 years      
Employee and Non Employee Stock Option | Equity Compensation Plans                
Options                
Outstanding at beginning of period (in shares)         2,130,283      
Granted (in shares)         995,675      
Exercised (in shares)         (678,950)      
Expired and/or forfeited (in shares)         (373,806)      
Outstanding at end of period (in shares)         2,073,202 2,130,283    
Employee and Non Employee Stock Option | Equity Incentive Plan 2007                
Options                
Outstanding at beginning of period (in shares)         2,051,017      
Granted (in shares)         919,675      
Exercised (in shares)         (657,724)      
Expired and/or forfeited (in shares)         (349,806)      
Outstanding at end of period (in shares)         1,963,162 2,051,017    
Employee and Non Employee Stock Option | Stock 2000 Plan                
Options                
Outstanding at beginning of period (in shares)         35,266      
Exercised (in shares)         (21,226)      
Outstanding at end of period (in shares)         14,040 35,266    
Employee and Non Employee Stock Option | Lumara 2013 Plan                
Options                
Outstanding at beginning of period (in shares)         44,000      
Granted (in shares)         76,000      
Expired and/or forfeited (in shares)         (24,000)      
Outstanding at end of period (in shares)         96,000 44,000    
Employee and Non Employee Stock Option | Other Equity Compensation Grants | Senior Management [Member]                
Options                
Granted (in shares)         220,000 165,000 270,000  
Outstanding at end of period (in shares)         830,975      
Additional Disclosures                
Award vesting period         4 years      
Employee and Non Employee Restricted Stock Units                
Unvested Restricted Stock Units                
Outstanding at beginning of year (in shares)         541,226      
Granted (in shares)         411,429      
Vested (in shares)         (149,572)      
Forfeited (in shares)         (148,728)      
Outstanding at end of year (in shares)         654,355 541,226    
Outstanding at end of year and expected to vest (in shares)               567,954
Additional Disclosures                
Number of restricted stock units outstanding (in shares)         541,226 541,226   654,355
Expense recognition period         2 years      
Employee and Non Employee Restricted Stock Units | Senior Management [Member]                
Options                
Granted (in shares)       82,500        
Vested (in shares) (36,600)              
Additional Disclosures                
Award vesting period       3 years        
Shares cancelled due to employee terminations (in shares) 27,500              
Shares cancelled due to non-achievement of maximum target stock price range (in shares) 18,400              
Expense recognition period       3 years        
Employee and Non Employee Restricted Stock Units | Equity Compensation Plans                
Unvested Restricted Stock Units                
Outstanding at beginning of year (in shares)         380,826,000      
Granted (in shares)         329,179,000      
Vested (in shares)         (85,098,000)      
Forfeited (in shares)         (126,227,000)      
Outstanding at end of year (in shares)         498,680,000 380,826,000    
Additional Disclosures                
Number of restricted stock units outstanding (in shares)         380,826,000 380,826,000   498,680,000
Employee and Non Employee Restricted Stock Units | Equity Incentive Plan 2007                
Unvested Restricted Stock Units                
Outstanding at beginning of year (in shares)         360,826,000      
Granted (in shares)         268,954,000      
Vested (in shares)         (73,432,000)      
Forfeited (in shares)         (110,018,000)      
Outstanding at end of year (in shares)         446,330,000 360,826,000    
Additional Disclosures                
Number of restricted stock units outstanding (in shares)         360,826,000 360,826,000   446,330,000
Employee and Non Employee Restricted Stock Units | Lumara 2013 Plan                
Unvested Restricted Stock Units                
Outstanding at beginning of year (in shares)         20,000,000      
Granted (in shares)         60,225,000      
Vested (in shares)         (11,666,000)      
Forfeited (in shares)         (16,209,000)      
Outstanding at end of year (in shares)         52,350,000 20,000,000    
Additional Disclosures                
Number of restricted stock units outstanding (in shares)         20,000,000 20,000,000   52,350,000
Employee and Non Employee Restricted Stock Units | Other Equity Compensation Grants | Senior Management [Member]                
Options                
Granted (in shares)     195,000          
Unvested Restricted Stock Units                
Granted (in shares)   83,070     82,250 87,900 115,000  
Vested (in shares)   (41,535)            
Forfeited (in shares)   (60,000)            
Outstanding at end of year (in shares)         155,675      
Additional Disclosures                
Award vesting period         3 years 3 years 3 years  
Number of restricted stock units outstanding (in shares)         155,675     155,675
Total equity-based compensation expense         $ 200 $ 100    
Fair value of awards granted     $ 2,100          
Expense recognition period     3 years          
Employee and Non Employee Restricted Stock Units | Maximum | Senior Management [Member]                
Additional Disclosures                
Fair value of awards granted       $ 500        
Share Based Compensation Award Vesting At Specific Date One Member | Employee and Non Employee Restricted Stock Units | Other Equity Compensation Grants | Senior Management [Member]                
Additional Disclosures                
Vesting rights percentage     50.00%          
Share Based Compensation Award Vesting At Specific Date Two Member | Employee and Non Employee Restricted Stock Units | Other Equity Compensation Grants | Senior Management [Member]                
Additional Disclosures                
Vesting rights percentage     100.00%