XML 48 R26.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair-Value Measurements - Narrative (Detail) (USD $)
9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash excluded from fair value hierarchy disclosure $ 750,000 $ 1,200,000
Unrealized Gain (Loss) on Investments $ 0 $ 0