Related Party Transactions: Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2015

Related Party Transactions [Abstract]

Schedule of Related Party Accounts Receivable and Payable

The balances were as follows (in thousands) as of:

	March 31, 2015		December 31, 2014
Receivables - affiliates	$	5,030	$	5,350
Accounts payable - affiliates	$	17,588	$	19,242

Schedule of Related Party Notes

We had the following balances with the Utility Money Pool (in thousands) as of:

	March 31, 2015		December 31, 2014
Money pool notes receivable, net	$	33,515	$	68,626

Schedule of Related Party Interest Income Expense

Our net interest income (expense) relating to balances with the Utility Money Pool was as follows (in thousands):

	Three Months Ended March 31,
	2015		2014
Net interest income (expense)	$	258	$	(781	)

Schedule of Revenues and Purchases from Related Parties

Other related party activity was as follows (in thousands):

	Three Months Ended March 31,
	2015		2014
Revenue:
Energy sold to Cheyenne Light	$	326	$	679
Rent from electric properties	$	1,124	$	1,023
Fuel and purchased power:
Purchases of coal from WRDC	$	4,045	$	5,014
Purchase of excess energy from Cheyenne Light	$	476	$	629
Purchase of renewable wind energy from Cheyenne Light - Happy Jack	$	549	$	664
Purchase of renewable wind energy from Cheyenne Light - Silver Sage	$	936	$	1,094
Gas transportation service agreement
Gas transportation service agreement with Cheyenne Light for firm and interruptible gas transportation	$	103	$	—
Corporate support:
Corporate support services and fees from Parent, Black Hills Service Company and Black Hills Utility Holdings	$	7,033	$	7,853