Quarterly report pursuant to Section 13 or 15(d)

Nature of Business and Basis of Presentation - Cumulative Effect of Accounting Standards Adoption (Details)

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Nature of Business and Basis of Presentation - Cumulative Effect of Accounting Standards Adoption (Details) - USD ($)
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Property and equipment, net of accumulated depreciation of $2,961 and $2,809, respectively $ 623,000 $ 669,000 $ 545,000
Right of use assets – operating leases 1,060,000 1,367,000 0
Accounts payable and other accrued liabilities 2,375,000 2,627,000 2,838,000
Operating 435,000 759,000 0
Deferred rent 0 0 45,000
Operating lease liabilities, non-current 1,038,000 1,100,000 0
Deferred rent, non-current 0 0 302,000
Accumulated deficit $ (63,236,000) (58,685,000) $ (58,875,000)
Accounting Standards Update 2016-02      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Right of use assets – operating leases   1,400,000  
Operating   759,000  
Operating lease liabilities, non-current   1,100,000  
Accounting Standards Update 2016-02 | Scenario, Adjustment [Member]      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Property and equipment, net of accumulated depreciation of $2,961 and $2,809, respectively   124,000  
Right of use assets – operating leases   1,367,000  
Accounts payable and other accrued liabilities   (211,000)  
Operating   759,000  
Deferred rent   (45,000)  
Operating lease liabilities, non-current   1,100,000  
Deferred rent, non-current   (302,000)  
Accumulated deficit   $ 190,000