Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Rental Payments under Non-Cancelable Operating Leases and Future Minimum Receipts under Subleases

Future minimum rental payments under non-cancelable operating leases (including the new Arlington, Virginia lease) and future minimum receipts under subleases (including the lease assignment discussed above), excluding executory costs, are as follows at September 30, 2014:

	Total			2014 (1)			YE 2015			YE 2016			YE 2017			YE 2018			Thereafter
Operating lease obligations	$	965,231		$	12,972		$	52,406		$	52,746		$	50,432		$	69,934		$	726,741
Sublease receipts		(313,549	)		(5,392	)		(21,813	)		(22,338	)		(22,427	)		(28,484	)		(213,095	)
Total net lease obligations	$	651,682		$	7,580		$	30,593		$	30,408		$	28,005		$	41,450		$	513,646

(1) For the three months ended December 31, 2014.