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Accrued Liabilities and Other (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accrued vacation $ 799 $ 761
Accrued paid personal leave 419 416
Accrued bonus 1,700 2,071
Other 545 327
Total $ 3,463 $ 3,575