Inventories - Schedule of Inventory (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Finished goods	$ 358	$ 896
Reserve for excess and obsolete inventory	(358)us-gaap_InventoryValuationReserves	(195)us-gaap_InventoryValuationReserves
Total inventories		$ 701us-gaap_InventoryNet

Amount of valuation reserve for inventory.

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