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Leases - Schedule of Leased Assets (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Leases, Operating [Abstract]  
Total lease cost $ 3,263
Cash paid for amounts included in the measurement of lease liabilities:  
Operating cash flows related to operating leases 3,425
Non-cash other information:  
Right-of-use assets obtained in exchange for new operating lease liabilities $ 1,883
Weighted-average remaining lease term (in years):  
Operating leases 12 months
Weighted-average discount rate:  
Operating leases 4.29%