Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Lease Expense (Details)

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Commitments and Contingencies - Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Finance lease costs    
Amortization of right-of-use assets $ 6 $ 16
Interest on lease liabilities 1 3
Operating lease costs 483 1,447
Short term lease costs 12 28
Variable lease costs 1 16
Total lease cost $ 501 $ 1,510