Inventories - Schedule of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Finished goods	$ 749	$ 896
Reserve for excess and obsolete inventory	(311)	(195)
Total inventories	$ 438	$ 701

Amount of valuation reserve for inventory.

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