Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies

Schedule of future minimum lease payments under noncancelable operating leases

Years ended December 31,	(in thousands)
2013		4,319
2014		4,439
2015		4,601
2016		4,735
2017		4,838
2018 and thereafter		7,427