Quarterly report pursuant to Section 13 or 15(d)

COMMON AND PREFERRED STOCK (Details)

v3.20.2
COMMON AND PREFERRED STOCK (Details)
3 Months Ended 6 Months Ended
Nov. 22, 2019
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Jun. 30, 2020
USD ($)
payment
$ / shares
shares
Jun. 30, 2019
USD ($)
shares
Mar. 31, 2020
USD ($)
Dec. 31, 2019
$ / shares
shares
Nov. 30, 2019
USD ($)
May 31, 2011
USD ($)
Class of Stock [Line Items]                    
Common stock, shares authorized (in shares)   675,000,000     675,000,000     675,000,000    
Common stock, par value (in dollars per share) | $ / shares   $ 0.001     $ 0.001     $ 0.001    
Common stock, shares issued (in shares)   436,439,915     436,439,915          
Common stock, shares outstanding (in shares)   436,439,915     436,439,915     406,085,183    
Preferred stock, shares authorized (in shares)   5,000,000     5,000,000     5,000,000    
Preferred stock, par value (in dollars per share) | $ / shares   $ 0.001     $ 0.001     $ 0.001    
Preferred stock, shares outstanding (in shares)   2,294,702     2,294,702     1,500,000    
Common stock surrendered by certain employees to cover tax obligations (shares)         300,000          
Fair value of common stock surrendered by certain employees to cover tax obligations | $   $ 0 $ 0 $ 0 $ 400,000          
Shares issued upon conversion of debt (in shares)         794,702          
Stock repurchase program, amount approved | $                   $ 150,000,000.0
Stock repurchased (in shares)   0     0 5,600,000        
Stock repurchased, value | $           $ 16,300,000        
Repurchase of stock recorded as a settlement of contingent consideration liabilities | $           $ 1,200,000        
Number of shares issued in transaction (in shares)         28,500,000          
Second Lien Notes due 2023                    
Class of Stock [Line Items]                    
Aggregate principal amount of debt repurchased and retired | $   $ 30,200,000     $ 30,200,000   $ 76,700,000   $ 70,800,000  
Aggregate principal amount of debt retired | $   $ 30,200,000     $ 30,200,000          
Series A Preferred Stock                    
Class of Stock [Line Items]                    
Preferred stock, shares issued (in shares)   2,294,702     2,294,702          
Preferred stock, shares outstanding (in shares)   2,294,702     2,294,702          
Preferred stock, dividend rate         6.50%          
Preferred stock, liquidation preference per share (in dollars per share) | $ / shares   $ 100     $ 100          
Amount of undeclared accumulated preferred stock dividends | $         $ 9,100,000          
Shares issued upon conversion (in shares)   43.63     43.63          
Conversion price (in dollars per share) | $ / shares   $ 2.292     $ 2.292          
Threshold of common stock price as a percent of conversion price triggering conversion   145.00%     145.00%          
Threshold trading days at which conversion occurs         20 days          
Conversion trading days window         30 days          
Number of annual dividend payments | payment         8          
Number of shares issued in transaction (in shares) 10,947