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Fair Value Measurements (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, beginning of period $ 0  
Total additions for the period:    
Fair value of Probaris ID™ contingent obligation 100,000 $ 0
Balance, end of period $ 100,000 $ 0