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Leases - Supplemental Cash Flow and Other Information Related to Leases (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Cash paid for the amounts included in the measurements of lease liabilities:  
Operating cash outflows from operating leases $ 18,325
Operating cash outflows from finance leases 48
Financing cash outflow from finance leases 1,082
ROU assets obtained in exchange for lease liabilities incurred:  
Operating leases $ 3,956