Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Facility lease obligation [Table Text Block]

Facility lease obligations consist of the following:

	As of December 31,
	2015		2014
Buildings A and B	$	108,857	$	110,210
Building C	49,475		49,312
Buildings D and E	206,376		152,770
	$	364,708	$	312,292

Commitments Under Operating Leases

The estimated future minimum noncancelable lease commitments under operating leases, as of December 31, 2015, are as follows:

	Facilities		Equipment		Total
2016	$	10,894	$	4,594	$	15,488
2017	11,332		425		11,757
2018	11,607		140		11,747
2019	11,740		—		11,740
2020	11,375		—		11,375
Thereafter	50,746		—		50,746
	$	107,694	$	5,159	$	112,853

Rent Expense Under Operating Leases

Rent expense under operating leases was:

Year Ended December 31,	Facilities		Equipment		Total
2015	$	14,659	$	543	$	15,202
2014	13,360		952		14,312
2013	9,404		471		9,875

Commitments Under Facility Lease Obligations

The estimated future minimum noncancelable commitments under these facility lease obligations, as of December 31, 2015, are as follows:

	Buildings A and B		Building C		Buildings D and E		Total
2016	$	13,809	$	4,688	$	12,679	$	31,176
2017	14,079		4,818		13,016		31,913
2018	14,356		4,951		13,360		32,667
2019	14,640		5,088		13,714		33,442
2020	14,931		5,227		14,076		34,234
Thereafter	117,096		54,760		137,079		308,935
	$	188,911	$	79,532	$	203,924	$	472,367