XML 72 R54.htm IDEA: XBRL DOCUMENT v3.8.0.1
Basis of Presentation and Summary of Significant Accounting Policies Correction of Immaterial Error (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2015
Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Liabilities $ 709,335 $ 723,877    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (175,734) $ (197,656) $ (155,339) $ (179,875)
Out-of-period Immaterial Adjustment [Member]        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Increase (Decrease) in Deferred Income Taxes 2,255      
Liabilities 2,255      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (2,255)     (2,255)
Increase in Deferred tax liability 5.60% 7.80%    
Increase in Total liabilities 0.30% 0.30%    
Decrease in Retained earnings 9.80% 3.70%    
Decrease in Total stockholders' equity 1.30% 1.10%    
Accumulated Deficit        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (20,711) $ (57,904) $ (1,130) $ 17,468
Accumulated Deficit | Out-of-period Immaterial Adjustment [Member]        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (2,255)