Geographic Information - Schedule of Long-Lived Net Assets by Major Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 13	$ 13
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	10	11
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	2	0
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1	1
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 0	$ 1