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Debt (Details Narrative) - USD ($)
3 Months Ended
Mar. 29, 2019
Sep. 17, 2018
Feb. 14, 2018
Feb. 14, 2018
Jan. 17, 2018
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Debt instrument, basis spread on variable rate           13.45%    
Debt instrument description   The Optional PIK Interest (as such term is defined in the Prior Credit Agreement) was decreased from 15% plus the LIBO Rate (as such term is defined in the Amended and Restated Credit Agreement) to 10% plus the LIBO Rate, with a 2.3125% floor; a LIBO Rate floor of 2.3125% was added            
Issuance of warrants to purchase a common stock   1,200,000            
Exercise price of warrants   $ 0.01       $ 7.33   $ 7.33
Warrants expiration date   Aug. 01, 2028            
Debt instrument maturity date           Mar. 31, 2021    
Long-term debt           $ 72,657,000   $ 77,939,000
2019 Warrants [Member] | April 1, 2019 [Member] | Investors [Member]                
Issuance of warrants to purchase a common stock           1,200,000    
Exercise price of warrants           $ 0.01    
Warrants expiration date           Apr. 01, 2029    
Second Amended and Restated Credit Agreement [Member]                
Debt instrument description no interest will accrue on the Loans under the Second Amended and Restated Credit Agreement from and after January 1, 2019 until March 31, 2020; beginning April 1, 2020 through the maturity date of the Second Amended and Restated Credit Agreement, interest payable in cash will accrue on the Loans under the Credit Agreement at a rate per annum equal to the sum of (a) 10.00% plus (b) the higher of (x) the LIBO Rate (as such term is defined in the Second Amended and Restated Credit Agreement) and (y) 2.3125%; the maturity date of the Loans is March 31, 2021;              
Debt instrument face amount $ 2,200,000         $ 50,700,000    
Debt instrument maturity date Mar. 31, 2021         Mar. 31, 2021    
Long-term debt           $ 72,700,000    
Increase in additional paid-in capital           7,300,000    
Accrued PIK interest           $ 28,800,000    
New effective interest rate 13.19%              
Second Amended and Restated Credit Agreement [Member] | Forecast [Member]                
Cash balance $ 1,500,000              
Second Amended and Restated Credit Agreement [Member] | Investors [Member]                
Debt instrument face amount $ 10,000,000              
Maximum [Member]                
Credit facility percentage   2.00%            
Minimum [Member]                
Credit facility percentage   1.00%            
Twenty-Third Amendment to Amended and Restated Credit Agreement [Member] | Through December 31, 2018 [Member]                
Debt instrument, basis spread on variable rate     12.00%          
Debt instrument interest rate portion payable in cash     10.00% 10.00%        
Twenty-Third Amendment to Amended and Restated Credit Agreement [Member] | January 1, 2019 through June 30, 2019 [Member]                
Debt instrument, basis spread on variable rate     15.00%          
Debt instrument interest rate portion payable in cash     10.00% 10.00%        
Twenty-Third Amendment to Amended and Restated Credit Agreement [Member] | July 1, 2019 through the maturity date [Member]                
Debt instrument, basis spread on variable rate     10.00%          
Debt instrument, fee percentage     1.00%          
6.00% Convertible Senior Unsecured Notes [Member]                
Debt instrument due date description       Convertible senior unsecured notes due 2021 Convertible senior unsecured notes due 2021   All of the outstanding 6.00% convertible senior unsecured notes due 2021  
Debt instrument face amount     $ 1,000,000 $ 1,000,000