Fair Value Measurements of Financial Assets and Liabilities (Detail) (Short Term Investments and Cash Equivalents, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents-Overnight Investments	$ 1,294	[1]	$ 1,623	[1]
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents-Overnight Investments	$ 1,294	[1]	$ 1,623	[1]

[1] The Company had no level 3 assets or liabilities as of September 30, 2014 and December 31, 2013.