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Condensed Consolidated Balance Sheets (Unaudited) (USD $)
Jun. 30, 2011
Dec. 31, 2010
Current assets:    
Cash and cash equivalents $ 69,832,030 $ 65,893,970
Accounts receivable, net of allowances 4,819,734 5,145,494
Inventories 7,453,251 7,683,842
Other current assets 2,238,864 2,315,536
Total current assets 84,343,879 81,038,842
Property and equipment, net 1,195,924 1,220,010
Intangible assets, net 7,116,260 7,427,223
Other assets 1,924,992 2,367,979
Total assets 94,581,055 92,054,054
Current liabilities:    
Current portion of long-term debt 3,999,999 2,666,668
Accounts payable 2,302,058 2,124,654
Other current liabilities 4,425,873 4,436,298
Total current liabilities 10,727,930 9,227,620
Revolving line of credit 1,825,951 1,825,951
Long-term debt, excluding current portion 0 2,666,665
Other long-term obligations, excluding current portion 602,099 618,343
Total liabilities 13,155,980 14,338,579
Commitments and contingencies    
Shareholders' equity:    
Common stock - no par value; 100,000,000 shares authorized; 20,400,085 and 20,338,461 shares issued and outstanding as of June 30, 2011 and December 31, 2010, respectively 71,609,043 70,778,874
Retained earnings 9,897,585 6,998,806
Total shareholders' equity 81,506,628 77,777,680
Noncontrolling interests (81,553) (62,205)
Total equity 81,425,075 77,715,475
Total liabilities and equity $ 94,581,055 $ 92,054,054