Operating Leases - Summary of Lease Cost and Other Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 1,540	$ 4,404
Operating cash flows from operating leases		$ 4,134
Weighted Average Remaining Lease Term (years)	6 years 10 months 24 days	6 years 10 months 24 days
Weighted Average Discount Rate	7.10%	7.10%