Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,517	$ 1,516
Less: Accumulated depreciation	(393)	(346)
Property And Equipment, net	1,124	1,170
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	500	500
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	75	75
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	72	72
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	61	60
Research Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	667	667
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 142	$ 142

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References+ Details

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References+ Details

- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References+ Details