Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Approximate Aggregate Minimum Future Rental Payments Required

As of December 31, 2015, the approximate aggregate minimum future rental payments required were as follows (in thousands):

2016	$	14,091
2017	14,411
2018	12,909
2019	10,991
2020	8,981
Thereafter	6,991
Total (1)	$	68,374

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(1) Minimum future rental payments are recorded at their gross amounts and have not been reduced by sublease rentals of $0.7 million for each year from 2016 to 2018 and $0.6 million in 2019 for approximately 7,000 of aggregate square footage for former Cogent office space in New York and London. The subleases extend through the terms of the exiting leases, which both terminate in 2019.