Leases (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) lease_renew_option	Jun. 30, 2019 USD ($) lease_renew_option
Lessee, Lease, Description [Line Items]
Lessee, number of operating leases, noncurrent	43	43
Lessee, operating lease, number of options to renew | lease_renew_option	1	1
Operating lease rent expense | $	$ 1,239	$ 2,491
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	1 year	1 year
Lessee, operating lease, renewal term	20 years	20 years
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	37 years	37 years