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Debt Financing and Revolving Credit Facilities (Long-Term Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Total Debt $ 66,979  
Total debt, net of discount and deferred financing costs 55,273  
Less amounts due within one year (17,605)  
Long-term debt, net of current portion 37,668 $ 10,200
M&T Credit Agreement [Member]    
Debt Instrument [Line Items]    
Total Debt 10,105  
Paycheck Protection Program Loan [Member]    
Debt Instrument [Line Items]    
Total Debt 10,000  
Siena Loan Agreement [Member]    
Debt Instrument [Line Items]    
Total Debt 6,874  
Term Loan Credit Agreement [Member]    
Debt Instrument [Line Items]    
Total Debt 40,000  
discount (8,892)  
deferred financing costs $ (2,814)