Commitments and Contingencies - Leases (Details)		1 Months Ended	12 Months Ended
	Jan. 01, 2017 USD ($) item	Jun. 30, 2015 ft²	Dec. 31, 2015 USD ($) ft²	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Operating Leases
Rent expense			$ 600,000	$ 300,000	$ 300,000
Future minimum lease payments under noncancelable operating leases
2016			585,000
2017			469,000
2018			551,000
2019			569,000
2020			582,000
Thereafter			596,000
Total			3,352,000
Loss contingency accrual
Accrual for loss contingency			0	0
Purchase commitments
Purchase commitment due within one year			2,600,000
Facilities Leases
Operating Leases
Deferred rent			$ 149,000	$ 57,000
Lease, Laguna Hills, California
Operating Leases
Area of leased space | ft²			23,915
Sublease, San Clemente, California
Operating Leases
Area of space subleased | ft²		37,700
Lease, San Clemente, California | Forecast
Operating Leases
Lease term upon expiration of the sublease	5 years
Monthly rent	$ 42,000
Optional lease extension term	3 years
Lease, San Clemente, California | Forecast | Minimum
Operating Leases
Annual rent increase (as a percent)	2.50%
Lease, San Clemente, California | Forecast | Maximum
Operating Leases
Annual rent increase (as a percent)	3.50%
Number of lease renewal periods | item	2
Tenant improvement allowance	$ 264,000
Foreign Subsidiaries Office Leases | Maximum
Operating Leases
Area of leased space | ft²			2,000