Geographic Information and Major Customer and Product Data - Summary of Long-Lived Assets by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Long-lived assets by geographic region:
Long-lived assets	$ 2,610	$ 1,856
United States [Member]
Long-lived assets by geographic region:
Long-lived assets	918	777
Israel [Member]
Long-lived assets by geographic region:
Long-lived assets	1,606	956
Other [Member]
Long-lived assets by geographic region:
Long-lived assets	$ 86	$ 123