Organization and Summary of Significant Accounting Policies - Geographical Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 2,629	$ 1,273	$ 462	$ 475	$ 1,907	$ 1,898	$ 5,454	$ 0	$ 4,839	$ 9,259	$ 2,511
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									2,250	0	0
Europe- Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,994	5,109	1,590
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									245	4,150	921
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									350	$ 0	$ 0
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 900								$ 900