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Leases - Components of Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Operating Lease, Expense $ 7,911 $ 7,560
Finance Lease, Right-of-Use Asset, Amortization 266 0
Finance Lease, Interest Expense 49 0
Short-term Lease Payments 6,426 5,605
Lease, Cost $ 14,652 $ 13,165