Committed Lines of Credit (Tables)

6 Months Ended

Jun. 30, 2013

Schedule Of Borrowings Outstanding And Letters Of Credit

	June 30,			December 31,
	2013			2012
Borrowings outstanding at end of period	$	95,500		$	52,000
Letters of credit outstanding at end of period	$	24,078		$	35,885
Average interest rate on borrowings at end of period	1.11		%	1.12		%

Ecova [Member]

Schedule Of Borrowings Outstanding And Letters Of Credit

	June 30,			December 31,
	2013			2012
Borrowings outstanding at end of period	$	52,000		$	54,000
Average interest rate on borrowings at end of period	2.20		%	2.21		%