Details of Certain Condensed Consolidated Balance Sheet Accounts - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Other Assets Noncurrent Disclosure [Abstract]
Deferred commissions	$ 1,451	$ 1,560
Other	67	362
Total other assets	$ 1,518	$ 1,922