Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies [Abstract]

Future minimum lease payments under noncancelable operating leases

	Operating leases
	As of June 30, 2012
2012	$	2,673
2013		4,659
2014		3,907
2015		2,898
2016		1,558
Thereafter		9,503
Total minimum lease payments	$	25,198