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Consolidated Statement of Comprehensive Income Parentheticals (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statement of Comprehensive Income
Amortization of defined benefit plan deferred losses, tax	$ 60,000	$ 30,000	$ 110,000	$ 60,000
Amortization of unrealized loss on interest rate swaps, tax	$ 300,000	$ 100,000	$ 600,000	$ 100,000

Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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