Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Current:
Foreign
Federal
State	4	4
Total	4	4
Deferred:
Foreign
Federal	2
State
Total	2
Total:
Foreign
Federal	2
State	4	4
Total	$ 6	$ 4