Leases (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Future Minimum Lease Payments Under Non-cancelable Operating and Capital Leases

Future minimum lease payments under non-cancellable operating and capital leases are as follows: 

	Operating leases		Capital leases
2019	$	483,488	$	36,754
2020	462,154		41,044
2021	432,950		34,026
2022	395,462		33,690
2023	349,649		33,845
Thereafter	1,589,949		194,611
	$	3,713,652	373,970
Less portion representing interest			(91,233		)
Total capital lease obligations, including current portion			$	282,737