Commitments (Tables)

9 Months Ended

Sep. 30, 2017

Commitments [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

At September 30, 2017, future minimum annual lease payments under all noncancelable leases are as follows:

2017	$	16,984
2018	65,813
2019	53,209
2020	41,565
2021	27,696
Thereafter	47,009
	$	252,276