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Consolidated Statements of Cash Flows (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Supplemental Schedule of Noncash Investing and Financing Activities:
Cash dividends declared, but not yet paid	$ 2,700,000	$ 2,200,000
Capital expenditure accrual	2,200,000
Issuance of equity awards to employees in grant of service	1,500,000
Assets acquired, net of cash	188,959,000	16,357,000
Liabilities assumed	$ 47,967,000	$ 1,641,000

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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The aggregate amount of dividends declared, but not paid, as of the financial reporting date.

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