Schedule II - Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Balance at Beginning of Period	$ 129	$ 91	$ 92
Charged (benefit) to Costs and Expenses	97	38	46
Deductions	(55)		(47)
Balance at End of Period	$ 171	$ 129	$ 91