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)

v2.4.0.6
Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 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 (708)
Realized Gains or Losses In Earnings (51)
Unrealized Gains or Losses In Other Comprehensive Income   
Ending Balance 147
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 (5)
Ending Balance $ 774