Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.2.0.727
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Accounting Policies [Line Items]      
Percentage of tax benefit likely of being realized   50.00%  
Restricted Cash and Cash Equivalents   $ 14.6  
Gain (Loss) on Sale of Assets and Asset Impairment Charges $ 0.4   $ 0.4
CB Pharma Acquisitions Corp [Member]      
Accounting Policies [Line Items]      
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)   5.6  
Hercules Note Payble [Member]      
Accounting Policies [Line Items]      
Restricted Cash and Cash Equivalents   0.6  
Debt Instrument, Periodic Payment   $ 14.0