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Basis of Presentation (Details) - USD ($)
3 Months Ended 9 Months Ended
Oct. 16, 2020
Jul. 09, 2020
Jun. 12, 2020
Sep. 17, 2020
Sep. 30, 2020
Sep. 30, 2019
Jun. 29, 2020
Dec. 31, 2019
Dec. 31, 2018
Basis of Presentation (Details) [Line Items]                  
Stockholders' Equity, Reverse Stock Split   1 for 10              
Common Stock, Par or Stated Value Per Share (in Dollars per share)   $ 0.001     $ 0.001     $ 0.001  
Common Stock, Shares, Outstanding (in Shares)   4,239,578     4,416,663   42,395,782 3,521,037  
Common Stock, Shares, Issued (in Shares)         4,416,663   42,395,782 3,521,037  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents         $ 79,820,000 $ 75,890,000   $ 66,286,000 $ 58,205,000
Value of debt outstanding         38,401,000     52,658,000  
Paid-in-Kind Interest         3,370,000 $ 624,000      
Paycheck Protection Program Loan [Member] | Unsecured Debt [Member]                  
Basis of Presentation (Details) [Line Items]                  
Debt Instrument, Face Amount     $ 6,200,000            
Debt Instrument, Interest Rate, Stated Percentage     1.00%            
Debt Instrument, Periodic Payment     $ 261,275            
Eligible Forgivable Expenses       $ 8,300,000          
Notes Payable to Bank, Current         2,500,000        
Notes Payable to Bank, Noncurrent         3,700,000        
New Term Loan Agreement [Member] | Secured Debt [Member]                  
Basis of Presentation (Details) [Line Items]                  
Value of debt outstanding         138,800,000        
Paid-in-Kind Interest         4,000,000.0        
Debt Instrument, Covenant Compliance, EBITDA Requirment         34,000,000.0        
Debt Instrument, Covenant Compliance, Minimum Liquidity         10,000,000.0        
Outside the United States [Member]                  
Basis of Presentation (Details) [Line Items]                  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents         $ 56,900,000     $ 27,000,000.0  
Forecast [Member] | New Term Loan Agreement [Member] | Secured Debt [Member]                  
Basis of Presentation (Details) [Line Items]                  
Debt Instrument, Covenant Compliance, EBITDA Requirment $ 25,000,000.0                
Debt, Pre-payment 15,000,000.0                
Forecast [Member] | New Term Loan Agreement [Member] | Secured Debt [Member] | Payment No Later than Third Quarter 2021 [Member]                  
Basis of Presentation (Details) [Line Items]                  
Debt, Pre-payment $ 5,000,000.0