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Stock-Based Compensation (Details)
3 Months Ended
Mar. 31, 2018
USD ($)
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Unrecognized compensation expense $ 38,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 9 months 18 days