Equity Investments And Membership Interests In Joint Ventures (Tables)

3 Months Ended

Mar. 31, 2013

Equity Method Investments and Joint Ventures [Abstract]

Schedule Of Equity Method Investments

In thousands	Knight Hawk		DKRW			DTA			Tenaska		Millennium			Tongue River			Total
Balance at December 31, 2012	$	149,063	$	15,515		$	15,462		$	15,264	$	32,214		$	14,697		$	242,215
Advances to affiliates, net	—		—			593			—		1,790			1,001			3,384
Equity in comprehensive income (loss)	4,515		(733		)	(1,609		)	—		(684		)	(281		)	1,208
Balance at March 31, 2013	$	153,578	$	14,782		$	14,446		$	15,264	$	33,320		$	15,417		$	246,807
Notes receivable from investees:
Balance at December 31, 2012	$	—	$	38,680		$	—		$	5,148	$	—		$	—		$	43,828
Balance at March 31, 2013	$	—	$	41,019		$	—		$	5,197				$	—		$	46,216