Schedule of Net-Book-Value and Estimated Remaining Life of Finite-Lived Intangible Assets (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Finite-Lived Intangible Assets [Line Items]
Net Balance at December 31, 2015	$ 76,448
Repurchased royalty rights
Finite-Lived Intangible Assets [Line Items]
Net Balance at December 31, 2015	$ 53,438
Remaining Life (in years)	7 years 10 months 24 days
Acquired intellectual property
Finite-Lived Intangible Assets [Line Items]
Net Balance at December 31, 2015	$ 19,652
Remaining Life (in years)	8 years 7 months 6 days
License payments for marketing approvals
Finite-Lived Intangible Assets [Line Items]
Net Balance at December 31, 2015	$ 2,380
Remaining Life (in years)	5 years 8 months 12 days
SRCC in-place and above market tenant leases
Finite-Lived Intangible Assets [Line Items]
Net Balance at December 31, 2015	$ 978
Remaining Life (in years)	Remaining lease terms