Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments Under Operating Leases

The estimated future minimum noncancelable lease commitments under operating leases are as follows:

December 31,	Facilities		Equipment		Total
2014	$	8,765	$	2,169	$	10,934
2015	9,348		505		9,853
2016	9,895		24		9,919
2017	9,429		—		9,429
2018	9,606		—		9,606
Thereafter	67,849		—		67,849
	$	114,892	$	2,698	$	117,590

Rent Expense Under Operating Leases

Rent expense under operating leases was:

Year Ended December 31,	Facilities		Equipment		Total
2013	$	9,404	$	471	$	9,875
2012	7,428		601		8,029
2011	7,191		599		7,790

Commitments Under Facility Lease Obligations

The estimated future minimum noncancelable commitments under these facility lease obligations, as of December 31, 2013, are as follows:

December 31,	Buildings A and B		Building C		Total
2014	$	13,288	$	4,438	$	17,726
2015	13,545		4,562		18,107
2016	13,809		4,689		18,498
2017	14,079		4,818		18,897
2018	14,356		4,951		19,307
Thereafter	146,667		65,074		211,741
	$	215,744	$	88,532	$	304,276