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(1) Summary of Significant Accounting Policies (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Notes to Financial Statements    
Goodwill $ 4,150,339 $ 4,150,339
Other intangible assets    
Gross carrying amount 3,143,098 3,128,588
Accumulated amortization 2,983,704 2,954,162
Net carrying amount $ 159,394 $ 174,426