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Business Description and Summary of Significant Accounting Policies (Details 1) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance $ 131 $ 334
Gain recognized in earnings 38 (203)
Balance $ 169 $ 131