Capitalization (Tables)

3 Months Ended

Mar. 31, 2015

Capitalization [Abstract]

Schedule of carrying amount and fair value of bonds

	March 31, 2015				December 31, 2014
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
First Mortgage Bonds	$	88,271	$	90,557	$	88,628	$	90,115
SRF Bonds	$	535	$	537	$	540	$	542