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Income Taxes (Additional Disclosures) (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
filing_group
Dec. 31, 2015
USD ($)
filing_group
Dec. 31, 2014
filing_group
Income Tax Disclosure [Abstract]      
Net operating loss carryforwards $ 55,400,000    
Number of U.S. tax return filing groups | filing_group 1 2 2
Valuation allowance $ 1,053,000 $ 1,093,000  
Unremitted earnings outside the US 1,200,000    
Unrecognized tax benefits $ 0