Capital leases: (Tables)

12 Months Ended

Dec. 31, 2013

Capital leases:

Schedule of minimum lease payments under capital leases together with present value of net minimum lease payments

The minimum lease payments under the capital leases together with the present value of the net minimum lease payments as of December 31, 2013 are as follows:

Year Ending December 31,		(dollars in thousands)
		Scherer Unit No. 2			Doyle			Total
2014	$	14,949		$	12,447		$	27,396
2015		14,949			18,298			33,247
2016		14,949			–			14,949
2017		14,949			–			14,949
2018		14,949			–			14,949
2019-2031		145,230			–			145,230
Total minimum lease payments		219,975			30,745			250,720
Less: Amount representing interest		(108,508	)		(2,000	)		(110,508	)
Present value of net minimum lease payments		111,467			28,745			140,212
Less: Current portion		(7,459	)		(11,022	)		(18,481	)
Long-term balance	$	104,008		$	17,723		$	121,731