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Long-term Notes Payable (Including Current Portion) and Line of Credit - Additional Information (Details) - Silicon Valley Bank - Revolving Credit Facility - USD ($)
1 Months Ended
Jan. 31, 2018
Dec. 31, 2019
Line Of Credit Facility [Line Items]    
Line of credit facility allowable amount $ 10,000,000.0  
Line of credit facility maturity date Jan. 31, 2020  
Line of credit   $ 0
Line of credit facility borrowing base limitation percentage of eligible receivables 80.00%  
Liquidity ratio 1.25%