Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2012

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income (Loss)

Note 11.  Accumulated Other Comprehensive Income (Loss)

In addition to net income, our comprehensive income includes changes in the market value of the cumulative unrealized gain or loss, net of tax, on financial derivative instruments qualifying and designated as cash flow hedges and unrecognized Net Periodic Benefit Cost related to our Post-Retirement Benefit Plans. Additional information on our interest-rate swap agreements, which are classified as financial derivative instruments, can be found under Note 7 "Financial Derivative Instruments." In the second quarter of 2012 a valuation adjustment was recorded related to our post-retirement benefit plan increasing accumulated other comprehensive income by $622,000, net of tax. This adjustment was made to correct an immaterial valuation error made at December 31, 2011.