Commitments (Tables)

12 Months Ended

Dec. 31, 2016

Commitments [Abstract]

Schedule of Minimum Lease Payments

At December 31, 2016, future minimum annual lease payments under all noncancelable leases are as follows:

2017	$	58,502
2018	46,642
2019	35,986
2020	28,056
2021	16,847
Thereafter	28,224
	$	214,257