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Leases Total Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases [Abstract]        
Operating lease cost $ 373 $ 391 $ 1,116 $ 1,172
Short-term lease cost 52 56 174 197
Variable lease cost 141 129 394 366
Sublease income 28 0 84 0
Total lease cost, net $ 538 $ 576 $ 1,600 $ 1,735