Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Approximate Aggregate Minimum Future Rental Payments Required

As of December 31, 2016, the approximate aggregate minimum future rental payments required were as follows (in thousands):

2017	$	14,753
2018	13,379
2019	11,577
2020	9,681
2021	2,180
Thereafter	6,627
Total (1)	$	58,197

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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 2017 to 2018 and $0.5 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 existing leases, which both terminate in 2019.