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Debt and Convertible Notes (Additional Information) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 7 Months Ended 12 Months Ended
Dec. 11, 2018
Aug. 14, 2018
May 15, 2018
May 14, 2018
Sep. 17, 2018
Dec. 23, 2016
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2018
Dec. 31, 2017
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     178,931              
Amortization of Debt Discount (Premium)               $ 986    
Debt Instrument, Convertible, Conversion Price $ 4.00                  
Convertible Common Stock [Member] | First Amendment Agreement [Member]                    
Accrued Interest On Convertible Notes   $ 351                
Stock Issued During Period, Shares, Conversion of Convertible Securities   2,067         2,737      
Convertible Common Stock [Member] | Second Amendment Agreement [Member]                    
Debt Conversion, Converted Instrument, Amount                 $ 23,000  
Debt Instrument, Convertible, Conversion Price $ 4.00                  
Stock Issued During Period, Shares, Conversion of Convertible Securities                 5,627  
Private Placement [Member]                    
Stock Issued During Period, Value, New Issues     $ 88              
Convertible Debt [Member]                    
Debt Instrument, Face Amount     $ 4,438              
Debt Instrument, Interest Rate, Stated Percentage     5.00%              
Interest Expense, Debt                 $ 110  
Amortization of Debt Discount (Premium)                 986  
Debt Instrument, Convertible, Conversion Price     $ 12.40              
Debt Instrument, Periodic Payment         $ 296          
Common Stock Discount Percentage         10.00%          
Minimum Floor Price Percentage         20.00%          
Early Repayment Penalties Rate         15.00%          
Class A Warrants [Member]                    
Class Of Warrant Or Right Number Of Warrants Issued       250,000            
Class A Warrants [Member] | Convertible Debt [Member]                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     357,862              
Debt Instrument, Convertible, Conversion Price     $ 12.40              
Class B Warrants [Member] | Convertible Debt [Member]                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     178,931              
Debt Instrument, Convertible, Conversion Price     $ 12.40              
XpresSpa Engagement [Member]                    
Payments For Interest Expenses                 $ 731 $ 731
Debt Instrument, Maturity Date Range, Start                 May 01, 2019  
Debt Instrument, Maturity Date Range, End                 Dec. 31, 2019  
Minimum [Member] | Convertible Common Stock [Member] | Second Amendment Agreement [Member]                    
Debt Conversion, Converted Instrument, Shares Issued 250,000                  
Rockmore Investment Master Fund Ltd [Member]                    
Debt Instrument, Interest Rate, Basis for Effective Rate           9.24% annual interest, calculated on a monthly basis, which is payable in arrears on the last business day of each month plusâ‹… 2% annual interest, calculated on a monthly basis, which accrues monthly and becomes due and payable on the Debt anniversary dates.        
Debt Instrument Penalty, Percentage                 4.00%  
Debt Instrument, Face Amount           $ 6,500        
Debt Instrument, Interest Rate, Stated Percentage           11.24%