Schedule of Property, Plant and Equipment (Details) (USD $)
6 Months Ended
Sep. 30, 2012
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 1 $ 651,721
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 2 652,507
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 3 60,142,032
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 4 36,072,569
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 5 26,168,545
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 6 21,675,989
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 7 1,351,820
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 8 1,140,086
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 9 88,314,118
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 10 59,541,151
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 11 (13,082,817)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 12 (11,661,124)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 13 75,231,301
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 14 47,880,027
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 15 126,005,333
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 16 145,987,128
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 17 201,236,634
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 18 $ 193,867,155