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Short-term and long-term debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Short-term debt:    
- Revolving credit line and other debt   $ 14,000
- Loan from Paycheck Protection Program- current $ 1,650  
- Capital lease obligation- current 5  
- Term loan facility-current 5,248 3,008
Subtotal 6,903 17,008
Long-term debt:    
Term Loan Facility- net of current portion of long-term debt 81,179 85,115
- Loan from Paycheck Protection Program- net of current portion 825  
- Capital lease obligations   3
- Less: deferred financing costs on term loan (2,512) (3,136)
Subtotal 79,492 81,982
Total short-term & long-term debt $ 86,395 $ 98,990