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Condensed Consolidated Statements of Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Loss
Noncontrolling Interest
Equity, beginning balance at Dec. 31, 2016   $ 819 $ 1,132,540 $ (94,077) $ (93,347)  
Equity, Noncontrolling Interest, beginning balance at Dec. 31, 2016           $ 0
Total Equity, beginning balance at Dec. 31, 2016 $ 945,935          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) (1,260)     (1,939) 679 0
Repurchase Class A Common shares: 285,201 in 2018 and 81,091 in 2017 (1,760) (1) (1,262) (497)    
Compensation plans: 340,774 net shares issued in 2018 and 466,474 in 2017 [1] 4,539 5 4,534      
Equity, ending balance at Mar. 31, 2017   823 1,135,812 (96,513) (92,668)  
Equity, Noncontrolling Interest, beginning balance at Mar. 31, 2017           0
Total Equity, ending balance at Mar. 31, 2017 947,454          
Equity, beginning balance at Dec. 31, 2017 936,853 816 1,129,020 (90,061) (102,922)  
Equity, Noncontrolling Interest, beginning balance at Dec. 31, 2017 632         632
Total Equity, beginning balance at Dec. 31, 2017 937,485          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) (26,341)     (26,449) 740 (632)
Cash dividend: declared and paid - $0.05 per share (4,125)     (4,125)    
Repurchase Class A Common shares: 285,201 in 2018 and 81,091 in 2017 (4,409) (3) (4,406) 0    
Compensation plans: 340,774 net shares issued in 2018 and 466,474 in 2017 [1] 2,078 4 2,074      
Equity, ending balance at Mar. 31, 2018 904,688 $ 817 $ 1,126,688 $ (120,635) $ (102,182)  
Equity, Noncontrolling Interest, beginning balance at Mar. 31, 2018 0         $ 0
Total Equity, ending balance at Mar. 31, 2018 $ 904,688          
[1] * Net of tax payments related to shares withheld for vested RSUs of $1,868 in 2018 and $3,287 in 2017.