Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies [Abstract]

Aggregate Minimum Commitments Under Non-Cancelable Operating Leases

Aggregate minimum commitments under non-cancelable operating leases, primarily for office space and equipment rentals, at December 31, 2013 were as follows (in thousands):

2014	$	18,670
2015		18,604
2016		17,765
2017		15,049
2018		16,992
Thereafter		42,070
	$	129,150