Leases (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Schedule of future minimum lease payments and sublease income

Future minimum lease payments and sublease income at December 31, 2018, by year and in the aggregate, under all noncancellable operating leases and subleases are as follows:

	Lease Payments		Sublease Income
2019	$	151,795	$	148
2020	142,995		44
2021	135,426		10
2022	128,441		—
2023	119,955		—
Thereafter	482,220		—
Total	$	1,160,832	$	202