STATEMENTS OF CASH FLOWS (Tables)

12 Months Ended

Dec. 31, 2013

Statement of Cash Flows [Abstract]

Changes in current assets and liabilities

Changes in current assets and current liabilities were as follows:

	Year Ended December 31,
	2013			2012			2011
	(Thousands of Dollars)
Decrease (increase) in current assets:
Receivable from related parties	$	338		$	1,077		$	5,771
Income tax receivable	1,252			(780		)	(1,339		)
Other receivables	70			211			550
Other current assets	(187		)	(210		)	(62		)
Increase (decrease) in current liabilities:
Accounts payable	(678		)	542			104
Accrued compensation expense	(4,743		)	(4,557		)	(5,601		)
Accrued liabilities	107			(33		)	64
Income tax payable	—			—			(302		)
Taxes other than income tax	(159		)	112			231
Changes in current assets and current liabilities	$	(4,000	)	$	(3,638	)	$	(584	)

Cash flows related to interest and income tax

Cash flows related to interest and income tax were as follows:

	Year Ended December 31,
	2013			2012		2011
	(Thousands of Dollars)
Cash paid for interest	$	561		$	475	$	385
Cash (refunded) paid for income tax, net	$	(885	)	$	356	$	1,504