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Leases - Cash Flow by Lease Type (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Leases    
Operating cash outflows from operating leases $ 2,751 $ 2,496
Operating cash outflows from finance leases 2,556 2,746
Financing cash outflows from finance leases 362 108
Operating lease assets obtained in exchange for operating lease liabilities $ 4,192 $ 1,038