Leases - Additional Information (Details)	9 Months Ended
	Sep. 30, 2019 USD ($) Location
Lessee Lease Description [Line Items]
Lessee, operating lease, existence of option to extend [true false]	true
Number of locations subleased | Location	1
Lessee operating subLease remaining term	15 months
Operating leases sublease expiry date	2020
Lessee, operating sublease, existence of option to extend [true false]	false
Operating lease liabilities, cash paid	$ 6,816,000
Right-of-use assets obtained in exchange for lease obligations	$ 6,068,000
Weighted average discount rate	7.14%
Weighted average remaining lease term	6 years 9 months 18 days
Minimum
Lessee Lease Description [Line Items]
Operating lease term	1 year
Operating lease, renewal term	3 years
Maximum
Lessee Lease Description [Line Items]
Operating lease term	10 years
Operating lease, renewal term	5 years