Long Term Debt (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2012
Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate	2.50%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Nov. 30, 2020
Debt Instrument, Interest Rate, Stated Percentage	5.625%
Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	May 28, 2020
Debt Instrument, Interest Rate, Stated Percentage	8.04%
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Dec. 31, 2026
Long-term Debt, Weighted Average Interest Rate	5.70%
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Dec. 31, 2019
Long-term Debt, Weighted Average Interest Rate	3.90%