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Consolidated Balance Sheets (USD $)
Dec. 31, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 54,349,381 $ 70,599,146
Marketable securities 16,686,136 0
Accounts receivable, net of allowances 6,017,201 7,082,890
Inventories 6,218,355 5,774,694
Prepaid and other current assets 1,671,091 1,627,455
Deferred tax assets 2,290,078 2,223,882
Total current assets 87,232,242 87,308,067
Property and equipment, net 1,188,914 1,119,339
Intangible assets, net 9,476,798 7,023,064
Deferred tax assets 50,411 0
Other assets 645,366 67,846
Total assets 98,593,731 95,518,316
Current liabilities:    
Accounts payable 2,790,554 1,513,548
Accrued liabilities 5,264,806 5,086,400
Total current liabilities 8,055,360 6,599,948
Revolving line of credit 4,359,951 4,859,951
Deferred tax liabilities 0 645,029
Other long-term liabilities 611,933 578,119
Total liabilities 13,027,244 12,683,047
Commitments and contingencies      
Shareholders’ equity:    
Common stock – no par value; 100,000,000 shares authorized; 18,937,107 and 20,020,535 shares issued and outstanding as of December 31, 2012 and 2011, respectively 67,197,167 70,272,155
Retained earnings 18,499,154 12,656,662
Total shareholders’ equity 85,696,321 82,928,817
Noncontrolling interests (129,834) (93,548)
Total equity 85,566,487 82,835,269
Total liabilities and equity $ 98,593,731 $ 95,518,316