Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Current assets    
Allowance for doubtful accounts $ 17,168 $ 17,489
Stockholders’ equity    
Common stock, par value (in dollars per share $ 0.01 $ 0.01
Common stock, shares authorized 450,000,000 450,000,000
Common stock, shares issued 202,891,231 201,601,859
Common stock, shares outstanding 202,483,207 201,193,835
Treasury stock, shares 408,024 408,024
Series A Preferred Stock [Member]    
Stockholders’ equity    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Preferred Stock [Member]    
Stockholders’ equity    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 30,000,000 30,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0