Organization and Summary of Significant Accounting Policies, Long-Lived Assets by Geographic Location (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,133	$ 1,706
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,132	1,681
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	0	23
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1	$ 2