Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Contract Balances (Details)

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Summary of Significant Accounting Policies - Schedule of Contract Balances (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Receivables, which are included in 'Accounts Receivable' $ 323,000 $ 207,000
Contract liabilities (deferred revenue) $ 285,000 $ 320,000