Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Summary of Significant Accounting Policies - Schedule of Contract Balances (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Receivables, which are included in 'Accounts Receivable' $ 443,000 $ 475,000
Contract liabilities (deferred revenue) $ 71,000 $ 59,000