Fair Value Measurements - Summary of Quantitative Information about Inputs and Valuation Methodologies used for Fair Value Measurements Classified in Level 3 (Detail) - Contingent liabilities [Member] - Significant Unobservable Inputs (Level 3) [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Shanghai Three [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Fair Value	$ 1,782
Valuation Methodology	Multiple outcome discounted cash flow
Shanghai Three [Member] | Weighted Average [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Discount Rate	12.21%
Percent probabilities assigned to scenarios	50.00%
BDL [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Fair Value	$ 3,311
Valuation Methodology	Multiple outcome discounted cash flow
BDL [Member] | Weighted Average [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Discount Rate	15.71%
Percent probabilities assigned to scenarios	50.00%
Scilex Pharmaceuticals, Inc [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Fair Value	$ 40,000
Valuation Methodology	Multiple outcome discounted cash flow
Scilex Pharmaceuticals, Inc [Member] | Weighted Average [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Discount Rate	2.28%
Percent probabilities assigned to scenarios	95.00%
Concortis [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Fair Value	$ 596
Valuation Methodology	Multiple outcome discounted cash flow
Concortis [Member] | Weighted Average [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Discount Rate	12.21%
Percent probabilities assigned to scenarios	20.00%
RWMC [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Fair Value	$ 2,673
Valuation Methodology	Multiple outcome discounted cash flow
RWMC [Member] | Weighted Average [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Discount Rate	12.21%
Percent probabilities assigned to scenarios	50.00%