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Note 6 - Other receivables, net (Detail) (USD $)
2 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2011
Jun. 30, 2012
Jun. 30, 2012
Contract Guarantee Deposits [Member]
Jun. 30, 2012
Contract Guarantee Deposits [Member]
Loans and Leases Receivable, Net Amount   $ 3,952,757    
Proceeds from Collection of Loans Receivable 948,662      
Allowance for Doubtful Other Receivables, Current 524,000 740,000    
Provision for Doubtful Accounts   $ 561,000 $ 211,000 $ 211,000