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Leasing - Schedule of Components of Operating Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Leases [Abstract]    
Operating lease cost $ 1,207 $ 3,522
Variable lease cost 144 334
Short-term lease cost 0 1
Sublease income (9) (26)
Total lease cost $ 1,342 $ 3,831