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           3. Accounts Receivable 
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        12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||
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           Dec. 31, 2012 
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| Notes to Financial Statements | ||||||||||||||||||||||||||||||||||||||||||||||
| 3. Accounts Receivable | 
 Accounts receivable consisted of the following at December 31, 2012 and 2011: 
 
 
 
 See also Note 14 for concentrations of accounts receivable.  | 
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- Details 
          
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- Definition 
          The entire disclosure for financing receivables. Examples of financing receivables include, but are not limited to, loans, trade accounts receivables, notes receivable, credit cards, and receivables relating to a lessor's right(s) to payment(s) from a lease other than an operating lease that is recognized as assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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