Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Loss Contingencies [Line Items]
Operating Leases, Rent Expense	$ 87,000	$ 94,000	$ 172,000	$ 173,000
Operating Leases Base rent In Year Two			2.06%
Operating Leases Base Rent In Year Three			2.06%

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration