Commitments: (Tables)

12 Months Ended

Dec. 31, 2013

Commitments:

Schedule of estimated minimum rental commitments for railcar leases for use at coal-fired facilities over the next five years and thereafter

As of December 31, 2013, our estimated minimum rental commitments for our railcar leases for use at our coal-fired facilities over the next five years and thereafter are as follows:

		(dollars in thousands)
2014	$	5,708
2015		4,385
2016		4,385
2017		4,385
2018		4,385
Thereafter		2,596

Schedule of estimated minimum long term commitments

As of December 31, 2013, our estimated minimum long-term commitments are as follows:

		(dollars in thousands)
		Coal		Nuclear Fuel
2014	$	52,000	$	76,200
2015		28,000		39,600
2016		19,000		29,400
2017		–		29,100
2018		–		28,200
Thereafter		–		115,200