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 Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2014
Aug. 31, 2013
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Royalty payments received         $ 0    
Upfront payment received   $ 1,500          
Deferred revenue recognition period   70 months          
Revenue recognized from upfront payments     $ 64 $ 65 129 $ 130  
Receivables due from R-Pharm     777   777   $ 226
Services Business [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Upfront payment received $ 500            
Deferred revenue recognition period 48 months            
Discontinued Operations, Held-for-sale [Member] | Services Business [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Discontinued operation revenue     3,617 4,577 6,849 9,217  
Discontinued Operations, Held-for-sale [Member] | Licensing Agreements [Member] | Services Business [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Discontinued operation revenue     $ 31 $ 31 $ 63 $ 59