Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies [Abstract]

Commitments and Contingencies

11. Commitments and Contingencies

Certain of the Company's operating leases contain predetermined fixed escalations of minimum rentals during the original lease terms. For these leases, the Company recognizes the related rental expense on a straight-line basis over the life of the lease and records the difference between the amounts charged to operations and amounts paid as accrued rent expense.

The Company leases office space and certain equipment under various operating lease agreements. The Company has the option to extend the term of certain lease agreements. Future minimum commitments under these lease agreements as of December 31, 2014 are as follows (in thousands):

	Operating Leases
2014	$	4,812
2015		4,452
2016		3,672
2017		2,245
2018		1,686
Thereafter		2,076
Total minimum lease payments	$	18,943

Rent expense for the years ended December 31, 2014, 2013, and 2012 was approximately $5.4 million, $4.9 million, and $3.8 million, respectively.