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5. Completed Acquisition (Detail) (USD $)
Sep. 30, 2012
Business Acquisition, Cost of Acquired Entity, Purchase Price $ 4,241,914
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment 309,545
Business Acquisition, Purchase Price Allocation, Other Noncurrent Assets 64,866
Business Acquisition, Purchase Price Allocation, Current Liabilities, Other Liabilities 190,782
Business Acquisition, Purchase Price Allocation, Goodwill Amount $ 4,058,285