Commitments and Contingencies - Material Contractual Obligations, Commercial Commitments and Outstanding Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Commitments [Line Items]
Operating leases, Total	$ 85,495
Purchase obligations, Total	856
Total	244,325
Operating leases, Less than 1 year	12,639
Purchase obligations, Less than 1 year	511
Total, Less than 1 year	18,675
Operating leases, 1 to 3 years	18,987
Purchase obligations, 1 to 3 years	345
Total, 1 to 3 years	38,603
Operating leases, 3 to 5 years	15,989
Purchase obligations, 3 to 5 years
Total, 3 to 5 years	34,528
Operating leases, More than 5 years	37,880
Purchase obligations , More than 5 years
Term Loan	152,519
Build to Suit Lease Obligation [Member]
Commitments [Line Items]
Build to suit lease obligation, Total	143,524
Build to suit lease obligation, Less than 1 year
Build to suit lease obligation, 1 to 3 years	10,346
Build to suit lease obligation, 3 to 5 years	18,539
Build to suit lease obligation, More than 5 years	114,639
Expected Interest Payments on Term Loan [Member]
Commitments [Line Items]
Expected interest payments on Term Loan, Total	14,450
Expected interest payments on Term Loan, Less than 1 year	5,525
Expected interest payments on Term Loan, 1 to 3 years	8,925
Expected interest payments on Term Loan, 3 to 5 years
Expected interest payments on Term Loan, More than 5 years