Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details 3)

v2.4.0.6
Long-Term Debt (Details 3) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Summary of interest received and paid under term of cash flow swap  
Notional Amount $ 100.0
Receive Rate (1) one-month LIBOR
Cash Flow Swap [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 3.3
Pay Rate 7.10%
Receive Rate (1) one-month LIBOR + 1.50%
Variable Interest Rate 1.50%
Maturing Date Jul. 10, 2017
Cash Flow Swap 1 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 25.0
Pay Rate 5.16%
Receive Rate (1) one-month LIBOR
Maturing Date Sep. 01, 2012
Cash Flow Swap 2 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 15.0
Pay Rate 4.965%
Receive Rate (1) one-month LIBOR
Maturing Date Sep. 01, 2012
Cash Flow Swap 3 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 25.0
Pay Rate 4.885%
Receive Rate (1) one-month LIBOR
Maturing Date Oct. 01, 2012
Cash Flow Swap 4 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 10.3
Pay Rate 4.655%
Receive Rate (1) one-month LIBOR
Maturing Date Dec. 10, 2017
Cash Flow Swap 5 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 8.2
Pay Rate 6.86%
Receive Rate (1) one-month LIBOR + 1.25%
Variable Interest Rate 1.25%
Maturing Date Aug. 01, 2017
Cash Flow Swap 6 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 6.3
Pay Rate 4.33%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2013
Cash Flow Swap 7 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 100.0
Pay Rate 3.28%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2015
Cash Flow Swap 8 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 100.0
Pay Rate 3.30%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2015
Cash Flow Swap 9 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 6.9
Pay Rate 6.41%
Receive Rate (1) one-month LIBOR + 1.25%
Variable Interest Rate 1.25%
Maturing Date Sep. 12, 2017
Cash Flow Swap 10 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 50.0
Pay Rate 2.767%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2014
Cash Flow Swap 11 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 50.0
Pay Rate 3.24%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2015
Cash Flow Swap 12 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 50.0
Pay Rate 2.61%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2014
Cash Flow Swap 13 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 50.0
Pay Rate 3.07%
Receive Rate (1) one-month LIBOR
Maturing Date Jul. 01, 2015
Cash Flow Swap 14 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount 100.0
Pay Rate 2.065%
Receive Rate (1) one-month LIBOR
Maturing Date Jun. 30, 2017
Cash Flow Swap 15 [Member]
  
Summary of interest received and paid under term of cash flow swap  
Notional Amount $ 100.0
Pay Rate 2.015%
Receive Rate (1) one-month LIBOR
Maturing Date Jun. 30, 2017