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 (Detail)

v2.4.0.8
Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Stock warrants [Member]
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Beginning Balance $ 906
Purchase, Issuances, Sales and Settlement (841)
Realized Gains or Losses In Earnings (60)
Unrealized Gains or Losses in Other Comprehensive Income   
Ending Balance 5
Municipal bonds-tax exempt [Member]
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Beginning Balance 779
Purchase, Issuances, Sales and Settlement   
Realized Gains or Losses In Earnings   
Unrealized Gains or Losses in Other Comprehensive Income (17)
Ending Balance $ 762