Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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Amount before accumulated depreciation, depletion and amortization of 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, and furniture and fixtures.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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-Section S99
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-Subparagraph (SX 210.5-02(13))
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Balance Sheet Components (PPE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Property and equipment, net
Property and equipment, gross	$ 4,406		$ 4,178
Less accumulated depreciation	(1,335)		(1,192)
Property and equipment, net	3,071		2,986
Depreciation expense	100	$ 100
Leasehold improvements
Property and equipment, net
Property and equipment, gross	96		86
Laboratory equipment and toolings
Property and equipment, net
Property and equipment, gross	2,441		2,264
Computer equipment
Property and equipment, net
Property and equipment, gross	299		287
Software
Property and equipment, net
Property and equipment, gross	692		669
Office equipment
Property and equipment, net
Property and equipment, gross	131		129
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	$ 747		$ 743