Net Operating Loss Carryforwards (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
U.S. Federal income tax
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, amount	$ 9,574
U.S. Federal income tax | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, year of expiration	2018
U.S. Federal income tax | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, year of expiration	2019
Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, amount	$ 4,096
Operating loss carryforward, year of expiration	2018