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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Accumulated Deficit
Noncontrolling Interest
Beginning balance at Dec. 31, 2017 $ 735,618 $ 769 $ 3,093,058 $ 1,197 $ (76,732) $ (2,241,243) $ (41,431)
Beginning, shares at Dec. 31, 2017   76,880,862     (5,930,380)    
Increase (Decrease) in Stockholders' Equity              
Treasury stock purchased (1,041)       $ (1,041)    
Treasury stock purchased, shares         (109,466)    
Cash dividends (8,532)         (8,532)  
Shares issued in employee stock purchase plan 223   223        
Shares issued in employee stock purchase plan, shares   26,954          
Stock-based compensation, net of forfeitures 1,545 $ 9 1,600       (64)
Stock-based compensation, net of forfeitures, shares   871,981     (32,905)    
Cash distribution to noncontrolling unitholders of the Partnership (11,766)           (11,766)
Impact of adoption of ASU 2018-02       258   (258)  
Comprehensive income (loss)              
Net income (loss) 2,069         (3,816) 5,885
Interest rate swap gain, net of reclassifications to earnings 4,562     1,593     2,969
Amortization of terminated interest rate swaps 145     145      
Ending balance at Mar. 31, 2018 737,873 $ 778 3,094,881 3,194 $ (77,773) (2,238,800) (44,407)
Ending, shares at Mar. 31, 2018   77,779,797     (6,072,751)    
Beginning balance at Dec. 31, 2018 841,574 $ 1,358 3,177,982 5,773 $ (79,862) (2,263,677) 0
Beginning, shares at Dec. 31, 2018   135,787,509     (6,381,605)    
Increase (Decrease) in Stockholders' Equity              
Treasury stock purchased (857)       $ (857)    
Treasury stock purchased, shares         (87,036)    
Cash dividends (17,231)         (17,231)  
Shares issued in employee stock purchase plan 218   218        
Shares issued in employee stock purchase plan, shares   29,728          
Stock-based compensation, net of forfeitures 2,357 $ 11 2,346        
Stock-based compensation, net of forfeitures, shares   1,059,115     (15,434)    
Comprehensive income (loss)              
Net income (loss) 19,456         19,456  
Interest rate swap gain, net of reclassifications to earnings (3,225)     (3,225)      
Amortization of terminated interest rate swaps 0            
Ending balance at Mar. 31, 2019 $ 842,292 $ 1,369 $ 3,180,546 $ 2,548 $ (80,719) $ (2,261,452) $ 0
Ending, shares at Mar. 31, 2019   136,876,352     (6,484,075)