Leases - Additional Information (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Line Items]
Lessee, operating lease, existence of option to extend	true
Lease renewal term, operating lease	7 years
Lessee, operating lease, existence of option to terminate	true
Operating leases, options to terminate leases term	3 years 6 months
Sub lease expiration year	2020
Additional leases, primarily for corporate offices, that have not yet commenced	$ 142,600
Minimum
Leases [Line Items]
Remaining lease term, operating lease	1 year
Additional operating leases that have not yet commenced, lease terms	11 years
Maximum
Leases [Line Items]
Remaining lease term, operating lease	12 years
Additional operating leases that have not yet commenced, lease terms	12 years