Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Long-Term Liabilities - Additional Information (Detail)

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Accrued Expenses and Other Long-Term Liabilities - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 12, 2014
Dec. 31, 2012
Schedule Accrued Expenses And Other Long-Term Liabilities [Line Items]                  
Other Accrued Liabilities, Current $ 593,000   $ 593,000       $ 213,000    
Asset Retirement Obligation, Accretion Expense 38,000 $ 38,000 167,000 $ 75,000          
Capital Leases, Future Minimum Payments Receivable, Next Twelve Months               $ 500,000  
Subsequent Event [Member]                  
Schedule Accrued Expenses And Other Long-Term Liabilities [Line Items]                  
Capital Leases, Future Minimum Payments, Receivable in Two Years           $ 500,000      
Capital Leases, Future Minimum Payments, Receivable in Three Years         $ 500,000        
Ovamed Manufacturing Rights [Member]                  
Schedule Accrued Expenses And Other Long-Term Liabilities [Line Items]                  
Other Liabilities                 $ 1,500,000
Other Accrued Liabilities, Current $ 1,500,000   $ 1,500,000