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Short-term and long-term debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Short-term debt:    
- Revolving credit line and other debt $ 0 $ 15,000
- Term loan facility - current 4,250 5,248
Subtotal 4,250 20,248
Long-term debt:    
- Term loan facility- net of current portion of long-term debt 80,750 74,618
- FILO term loan 15,000 0
- Less: deferred financing costs on term loan (4,224) (1,473)
Subtotal 91,526 73,145
Total short-term & long-term debt $ 95,776 $ 93,393