Long-term Debt (Tables)

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Schedule of Maturities of Long-term Debt [Table Text Block]

Principal payments under the Energy Credit Agreement for the remainder of 2013 and subsequent years are as follows:

	Amount
	(in thousands)
Remainder of 2013	$	2,500
2014	10,000
2015	10,000
2016	10,000
2017	10,000
2018	25,000
Total	67,500
Less current portion	10,000
Total long-term debt	57,500