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

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-Section 50
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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 360
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-Section 50
-Paragraph 1
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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
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Balance Sheet Details - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property and equipment, net
Property and equipment, gross	$ 12,888	$ 6,831
Less accumulated depreciation and amortization	(5,295)	(4,677)
Property and equipment, net	7,593	2,154	$ 1,950
Depreciation and amortization	4,722	4,267	4,231
Buildings
Property and equipment, net
Property and equipment, gross	874
Equipment
Property and equipment, net
Property and equipment, gross	5,342	4,597
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	639	387
Leasehold improvements
Property and equipment, net
Property and equipment, gross	3,474	999
Computer equipment and software
Property and equipment, net
Property and equipment, gross	1,239	836
Construction in progress
Property and equipment, net
Property and equipment, gross	1,320	12
Property, Plant and Equipment
Property and equipment, net
Depreciation and amortization	$ 1,100	$ 800	$ 700