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Joint Venture Partnerships (Narrative) (Details) (USD $)
 6 Months Ended
Jun. 30, 2012
Joint Venture Partnerships 1 50.00%
Joint Venture Partnerships 2 33.00%
Joint Venture Partnerships 3 $ 3,040,000
Joint Venture Partnerships 4 15
Joint Venture Partnerships 5 1,029
Joint Venture Partnerships 6 50.00%
Joint Venture Partnerships 7 695,000
Joint Venture Partnerships 8 $ 714,792