Long-Term Debt Issued (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Debt Instrument [Line Items]
Proceeds from long-term debt	$ 0		$ 1,378
Other subsidiaries | Private activity bonds and government funded debt
Debt Instrument [Line Items]
Maturity	2033	[1]
Proceeds from long-term debt	$ 9,977	[1]
Other subsidiaries | Private activity bonds and government funded debt | Minimum
Debt Instrument [Line Items]
Interest Rate	0.00%	[1]
Other subsidiaries | Private activity bonds and government funded debt | Maximum
Debt Instrument [Line Items]
Interest Rate	5.00%	[1]

[1] Issuance which was initially kept in Trust pending the Company’s certification that it has incurred qualifying capital expenditures. This issuance has been presented as non-cash in the accompanying Consolidated Statements of Cash Flows.