Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Changes in Fair Value of Financial Instruments (Detail)

v3.3.1.900
Fair Value Measurements - Changes in Fair Value of Financial Instruments (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance $ 4,160 $ 0
Purchases   3,218
Change in fair value of investment (1,675) 942
Balance 2,485 4,160
CB Pharma Acquisitions Corp [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance 3,910 0
Purchases   2,675
Change in fair value of investment (1,675) 1,235
Balance 2,235 3,910
Short-term Investments [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance 0 0
Purchases   293
Change in fair value of investment 0 (293)
Balance 0 0
Other Long-term Investments [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance 250 0
Purchases   250
Change in fair value of investment 0  
Balance $ 250 $ 250