Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.20.4
Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Accounts receivables and contract assets, allowance for doubtful accounts $ 33,000,000 $ 25,000,000
Redeemable preferred stock, par value $ 0.01 $ 0.01
Redeemable preferred stock, shares authorized 50,000,000 50,000,000
Redeemable preferred stock, shares issued 325,000 0
Redeemable preferred stock, shares outstanding 325,000 0
Series A    
Equity:    
Common stock, par value per share $ 0.01 $ 0.01
Common stock, shares authorized 200,000,000 200,000,000
Common stock shares issued 72,227,256 72,152,848
Common stock, shares outstanding 72,227,256 72,152,848
Series B    
Equity:    
Common stock, par value per share $ 0.01 $ 0.01
Common stock, shares authorized 7,500,000 7,500,000
Common stock shares issued 2,973,665 2,929,401
Common stock, shares outstanding 2,973,665 2,929,401
Series C    
Equity:    
Common stock, par value per share $ 0.01 $ 0.01
Common stock, shares authorized 200,000,000 200,000,000
Common stock shares issued 0 0