Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Future Contractual Obligations for Operating Leases

As of December 31, 2017, Forrester had future contractual obligations as follows for operating leases (in thousands):

2018	$	12,506
2019		11,442
2020		10,835
2021		9,409
2022		8,001
Thereafter		29,490
Total minimum lease payments	$	81,683