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Debt (Details)
 1 Months Ended 12 Months Ended
Sep. 10, 2021
USD ($)
Jun. 02, 2021
USD ($)
Oct. 20, 2020
USD ($)
Oct. 16, 2020
USD ($)
Sep. 30, 2020
USD ($)
Jun. 12, 2020
USD ($)
Aug. 09, 2019
USD ($)
Aug. 31, 2019
USD ($)
$ / shares
Jan. 31, 2016
USD ($)
Jun. 30, 2014
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
Mar. 31, 2021
Feb. 09, 2021
$ / shares
Feb. 05, 2021
USD ($)
Aug. 09, 2020
$ / shares
Jul. 09, 2020
$ / shares
Feb. 09, 2019
$ / shares
Jul. 26, 2018
USD ($)
Nov. 07, 2017
USD ($)
Aug. 31, 2017
Debt (Details) [Line Items]                                            
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares                     $ 0.001 $ 0.001           $ 0.001        
Gain (Loss) on Extinguishment of Debt                     $ (7,351,000) $ 0 $ (13,205,000)                  
Paid-in-Kind Interest                     1,519,000 4,366,000 1,725,000                  
Adjustments to Additional Paid in Capital, Other [1]                       1,000                    
Liabilities, Fair Value Adjustment                     (16,419,000) (2,265,000) (5,112,000)                  
Short-term Debt                     2,104,000 5,950,000                    
Long-term Debt                     98,505,000                      
Amortization of Debt Discount (Premium)                     1,419,000 2,800,000 1,077,000                  
Proceeds from Issuance of Long-term Debt                     96,306,000 0 27,356,000                  
Gain on Loan Forgiveness                     $ 6,206,000 0 0                  
Closing Fees [Member]                                            
Debt (Details) [Line Items]                                            
Debt Issuance Costs, Gross   $ 2,200,000                                        
Debt Instrument, Unamortized Discount (Premium), Net   $ 2,200,000                                        
3.25% Convertible Senior Notes Due 2023 [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Interest Rate, Stated Percentage   3.25%                 3.25%                     3.25%
Debt Instrument, Face Amount                                       $ 8,000,000    
Interest rate if paid cash                                           3.25%
Interest rate if paid stock                                           5.00%
Interest rate if paid in-kind                                           2.75%
Debt Instrument, Convertible, Conversion Price (in Dollars per share) | $ / shares               $ 1             $ 5.647   $ 5.647   $ 1      
Debt Instrument, Redemption Price, Percentage               105.00%                            
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger               30.00%                            
Debt Instrument, Convertible, Threshold Percentage of Market Price Trigger               150.00%                            
Equity Method Investment, Ownership Percentage               49.00%                            
Debt Conversion, Converted Instrument, Amount                     $ 24,000,000 15,100,000                    
Paid-in-Kind Interest                     $ 1.2 $ 500,000                    
Debt Conversion, Converted Instrument, Shares Issued (in Shares) | shares                     4,246,828 2,126,780                    
Adjustments to Additional Paid in Capital, Other                     $ 50,800,000 $ 20,200,000                    
3.25% Convertible Senior Notes Due 2023 [Member] | Reported Value Measurement [Member]                                            
Debt (Details) [Line Items]                                            
Value of debt outstanding                       22,900,000                    
Interest Payable                       900,000                    
3.25% Convertible Senior Notes Due 2023 [Member] | After Reverse Split [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Convertible, Conversion Price (in Dollars per share) | $ / shares                                     $ 10      
4.875% Convertible Senior Notes Due 2020 [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Interest Rate, Stated Percentage                   4.875%       4.875%                
Value of debt outstanding               $ 111,100,000                            
Debt Instrument, Face Amount               113,000,000   $ 115,000,000                        
Debt Instrument, Convertible, Conversion Price (in Dollars per share) | $ / shares                   $ 9.64                        
Gain (Loss) on Extinguishment of Debt             $ (2,400,000)   $ 100,000                          
Debt Instrument, Convertible, Conversion Ratio                   103.7613                        
Debt Instrument, Convertible, Incremental Value of Principal Converted                   $ 1,000                        
Debt Instrument, Repurchase Amount                 2,000,000                          
Write off of Deferred Debt Issuance Cost             700,000   $ 100,000                          
Debt Instrument, Original Amount Of Debt Refinanced               103,800,000                            
Debt Instrument, Amount Of Accrued Interest Refinanced               1,000,000                            
Debt Instrument, Amount Of Debt Exchanged Into A New Instrument               $ 7,300,000                            
Amortization of Debt Discount (Premium)                     0 0 460,000                  
Benefit Street Partners [Member]                                            
Debt (Details) [Line Items]                                            
Value of debt outstanding                     98,505,000 0 [2]                    
Debt Instrument, Face Amount                               $ 11,000,000            
Long-term Debt                     95,519,000 0                    
Debt Issuance Costs, Gross                     1,000,000                      
Amortization of Debt Issuance Costs                     100,000                      
Debt Instrument, Unamortized Discount                     2,300,000                      
Amortization of Debt Discount (Premium)                     200,000                      
Long-term Debt, Fair Value                     97,300,000                      
New Term Loan Agreement [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Interest Rate, Stated Percentage               10.50%                            
Value of debt outstanding                     0 119,801,000 [2]                    
Interest Payable                       4,700,000                    
Debt Instrument, Face Amount               $ 134,800,000                            
Interest rate if paid cash               8.00%                            
Interest rate if paid in-kind               2.50%                            
Paid-in-Kind Interest     $ 300,000                                      
Debt Instrument, Covenant Compliance, EBITDA Requirment       $ 25,000,000 $ 34,000,000                                  
Debt Instrument, Covenant Compliance, Minimum Liquidity         $ 10,000,000                                  
Debt, Pre-payment       15,000,000                                    
Repayments of Debt     $ 15,000,000                                      
Notes Payable                                          
Short-term Debt                       5,000,000                    
Long-term Debt                     0 111,330,000                    
Debt Issuance Costs, Gross             3,800,000                              
Amortization of Debt Issuance Costs                     400,000 1,000,000 400,000                  
Debt Instrument, Unamortized Discount             $ 10,100,000                              
Amortization of Debt Discount (Premium)                     1,200,000 2,800,000 1,100,000                  
Long-term Debt, Fair Value                       129,600,000                    
New Term Loan Agreement [Member] | Secured Debt [Member] | Payment No Later than Third Quarter 2021 [Member]                                            
Debt (Details) [Line Items]                                            
Debt, Pre-payment       $ 5,000,000                                    
New Term Loan Agreement [Member] | Reported Value Measurement [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Value of debt outstanding                       116,000,000                    
Initial Term Loan [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Face Amount   $ 99,000,000                                        
Proceeds from Issuance of Long-term Debt   $ 96,300,000                                        
Debt Instrument, Covenant Description   the Company must maintain a minimum cash balance of not less than $20.0 million. The minimum cash balance can be reduced to $15.0 million in increments of $1.0 million for every $5.0 million in principal repayment of the 2021 BSP Term Loan                                        
Initial Term Loan [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Proceeds from Issuance of Long-term Debt                     $ 98,500,000                      
Delayed Draw Term Loan [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Face Amount   $ 19,000,000                                        
Delayed Draw Term Loan [Member] | Closing Fees [Member]                                            
Debt (Details) [Line Items]                                            
Debt Issuance Costs, Gross   $ 500,000                                        
3.25% Convertible Senior Notes Due 2023 [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Interest Rate, Stated Percentage   3.25%                 3.25%                      
Value of debt outstanding [3]                     $ 0 34,134,000                    
Long-term Debt [3]                     0 34,134,000                    
Paycheck Protection Program Loan [Member] | Unsecured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Interest Rate, Stated Percentage           1.00%                                
Debt Instrument, Face Amount           $ 6,200,000                                
Monthly payments           $ 261,275                                
Gain on Loan Forgiveness $ 6,200,000                   6,200,000                      
Secured Debt [Member] | New Term Loan Agreement [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Value of debt outstanding                       124,500,000                    
Long-term Debt                       114,800,000                    
Oasis Management And Oasis Investments ll Master Fund Ltd. [Member]                                            
Debt (Details) [Line Items]                                            
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares               $ 0.001                            
Oasis Management And Oasis Investments ll Master Fund Ltd. [Member] | 3.25% Convertible Senior Notes Due 2023 [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Face Amount               $ 8,000,000                         $ 21,600,000  
Oasis Management And Oasis Investments ll Master Fund Ltd. [Member] | 3.25% Convertible Senior Notes (due 2020) [Member]                                            
Debt (Details) [Line Items]                                            
Gain (Loss) on Extinguishment of Debt               $ (10,400,000)                            
Liabilities, Fair Value Adjustment                     $ 16,400,000 $ 2,300,000 $ 5,100,000                  
London Interbank Offered Rate (LIBOR) [Member] | Initial Term Loan [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Description of Variable Rate Basis   subject to a 1.00% LIBOR floor, or (ii) base rate plus 5.50% - 6.00% (determined by reference to a net leverage pricing grid), subject to a 2.00% base rate floor                                        
London Interbank Offered Rate (LIBOR) [Member] | Initial Term Loan [Member] | Minimum [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Basis Spread on Variable Rate   6.50%                                        
London Interbank Offered Rate (LIBOR) [Member] | Initial Term Loan [Member] | Minimum [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Basis Spread on Variable Rate   6.50%                                        
London Interbank Offered Rate (LIBOR) [Member] | Initial Term Loan [Member] | Maximum [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Basis Spread on Variable Rate   7.00%                                        
Debt Instrument, Description of Variable Rate Basis   subject to a 1.00% LIBOR floor, or (ii) base rate plus 5.50% - 6.00% (determined by reference to a net leverage pricing grid), subject to a 2.00% base rate floor                                        
London Interbank Offered Rate (LIBOR) [Member] | Initial Term Loan [Member] | Maximum [Member] | Secured Debt [Member]                                            
Debt (Details) [Line Items]                                            
Debt Instrument, Basis Spread on Variable Rate   7.00%                                        
[1] After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.
[2] The amount presented excludes accrued, but unpaid, PIK interest of $4.7 million as of December 31, 2020.
[3] The amounts presented for the 3.25% convertible senior notes due 2023 within the table represent the fair value as of December 31, 2020 (see Note 16 - Fair Value Measurements). The principal amount of these notes is $22.9 million as of December 31, 2020. The accrued, but unpaid, payment-in-kind interest is $0.9 million as of December 31, 2020.