SELECTED BALANCE SHEET COMPONENTS - PROPERTY PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property and equipment, net:
Total property and equipment, gross	$ 10,941		$ 10,941		$ 9,687
Less: Accumulated depreciation	(6,726)		(6,726)		(5,638)
Total, net	4,215		4,215		4,049
Depreciation and amortization	400	$ 400	1,200	$ 1,000
Equipment and computers
Property and equipment, net:
Total property and equipment, gross	3,207		3,207		3,280
Furniture and fixtures
Property and equipment, net:
Total property and equipment, gross	931		931		931
Computer Equipment
Property and equipment, net:
Total property and equipment, gross	2,674		2,674		2,662
Building improvements and leasehold improvements
Property and equipment, net:
Total property and equipment, gross	3,319		3,319		2,393
Tenant reimbursements			900
Construction in progress
Property and equipment, net:
Total property and equipment, gross	$ 810		$ 810		$ 421