Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Parenthetical) (Detail)

v2.4.0.8
Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Parenthetical) (Detail) (USD $)
 6 Months Ended
Jun. 30, 2014
Jul. 27, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Exercise price of stock warrants $ 9.60 $ 9.60
Class of warrant or rights date from which warrants or rights expiration date Oct. 14, 2015  
Carrying value of warrant $ 400  
Municipal bonds-tax exempt [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Par value of bond 700,000  
Amortized value $ 699,000  
Useful remaining life intangible assets 8 months 27 days