Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule Of Future Minimum Payments For All Operating Lease Obligations

For years subsequent to December 31, 2017, future minimum payments for all operating lease obligations that have initial non-cancelable lease terms exceeding one year, net of rental income from subleases are as follows.

	Operating Leases		Sublease Rental Income
2018	$	44,193	$	2,000
2019	41,386		2,164
2020	38,877		1,604
2021	36,942		1,556
2022	21,355		781
Thereafter	85,237		1,774
Total	$	267,990	$	9,878