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Acquisitions And Dispositions	6 Months Ended
	Jun. 30, 2011
Acquisitions And Dispositions
Acquisitions And Dispositions	(2) Acquisitions and Dispositions: Historically the Company has repurchased the interests of the partners and trust unit holders in the eighteen oil and gas limited partnerships (the "Partnerships") and the two asset and business income trusts (the "Trusts") managed by the Company as general partner and as managing trustee, respectively. The Company purchased such interests in an amount totaling $169,000 and $1,000 for the six months ended June 30, 2011and 2010, respectively.

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The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

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