Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

v3.8.0.1
Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Income Taxes [Abstract]          
Discrete charge for an uncertain tax position $ 0 $ 520 $ 20 $ 953  
Discrete charge associated with disproportionate tax effect $ 109   344    
Payments on tax audit liability     $ 939    
Foreign statutory tax rate, foreign operations 25.00%   25.00%    
Gross deferred tax asset         $ 75,416
Valuation allowance         67,662
Net deferred tax asset         7,754
Deferred tax liabilities, gross         16,720
Foreign Earnings Repatriated $ 10,800        
Discrete expense related to alternative minimum tax 211        
Discrete expense related to tax amortization of indefinite lived intangibles and goodwill 101        
Increase to the deferred tax liabilities $ 101        
Net operating loss carryforwards for U.S. federal income tax purposes         172,419
Tax windfall         270
Research and experimentation credit carryforwards         3,407
Alternative minimum tax credit carryforwards         $ 315
AMT percentage         20.00%
Maximum percentage of income offset by available NOLs         90.00%
Net operating loss carryforwards, net of limitations         $ 172,149