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Derivatives (Tables)
 12 Months Ended
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Terms and Assumptions in Valuation of Convertible Option of Notes
The terms and assumptions used to determine the fair value of the Warrants were as follows:


Measurement DateJuly 20. 2020
Stock Price$2.45 
Expected Life in Years5.00
Annualized Volatility79.5 %
Discount Rate - Bond Equivalent Yield0.3 %
The terms and assumptions used in connection with the valuation of the convertible option of the Series B Notes are as follows:

12/31/201903/31/202005/28/2020
Issuance date10/31/201910/31/201910/31/2019
Maturity date5/1/20235/1/20235/1/2023
Term (years)3.333.082.92
Principal$34,405 $34,405 $34,405 
Seniority Senior unsecured  Senior unsecured Senior unsecured
Conversion price$7.20 $7.20 $7.20 
Stock price$4.30 $2.80 $4.03 
Risk free rate1.6 %0.3 %0.2 %
Volatility 47.3 %55.0 %62.5 %
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis
The terms and assumptions used to determine the fair value of the Warrants were as follows:

Measurement date4/6/20205/28/2020
Stock Price2.70 4.03 
Expected Life in Years5.004.86
Annualized Volatility77.6 %79.0 %
Discount Rate- Bond Equivalent Yield0.4 %0.3 %
Schedule of Liabilities Measured and Recognized at Fair Value on a Recurring Basis
The following table sets forth the Company’s derivative liabilities as presented on the Consolidated Balance Sheet that were measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of December 31, 2019 and December 31, 2020, respectively.


Quoted Prices in Active markets for
Identical Assets and Liabilities		Significant Other
Observable Inputs		Significant Unobservable
Inputs		Balance as ofQuoted Prices in Active markets for
Identical Assets and Liabilities		Significant Other
Observable Inputs		Significant Unobservable
Inputs		Balance as of
Descriptions(Level 1)(Level 2)(Level 3)December 31, 2019(Level 1)(Level 2)(Level 3)December 31, 2020
Derivative liabilities related to Series B Convertible Notes— — 6,776 6,776 — — — — 
Derivative liabilities related to the Series C Convertible Notes— — — — — 7,507 7,507 
Derivative liabilities related to Warrants— — — — — — — — 
Derivative liabilities$— $— $6,776 $6,776 $— $— $7,507 $7,507 


The following table sets forth a summary of changes in the fair value of the Company’s Level 3 liabilities for the year ended December 31, 2020. Any unrealized gains or losses on the derivative liabilities were recorded in the change in derivative liability line on the Company’s Consolidated Statement of Operations.
DescriptionsBalance as of
12/31/2019		(Gain) or loss recognized in earnings
 from Change in Fair Value		Balance as of
3/31/2020		Initial Measurement(Gain) or loss recognized in earnings
 from Change in Fair Value		Reclassification to stockholder's equityBalance as of
6/30/2020		Initial Measurement(Gain) or loss recognized in earnings
 from Change in Fair Value		Balance as of
9/30/2020		(Gain) or loss recognized in earnings
 from Change in Fair Value		Balance as of
12/31/2020
Fair value of convertible feature of Series B Convertible Notes$6,776 $(3,995)$2,781 $— $3,513 $(6,294)$— $— $— $— $— $— 
Fair value of the derivative liabilities related to the Senior Credit Facilities— 5,253 5,253 — 318 — 5,571 — (5,571)— — — 
Fair value of convertible feature of Series C Convertible Notes— — — — — — — 5,481 1,245 6,726 7817,507 
Derivative liabilities related to Warrants— — — 1,406 760 (2,166)— — — — 
Change in the fair value of derivative liabilities$6,776 $1,258 $8,034 $1,406 $4,591 $(8,460)$5,571 $5,481 $(4,326)$6,726 $781 $7,507