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Condensed Consolidated Balance Sheets (Unaudited) (USD $)
Sep. 30, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 39,644,081 $ 40,869,457
Marketable securities 14,634,302 14,019,761
Accounts receivable, net of allowances 5,296,114 4,530,424
Inventories 6,130,722 5,722,882
Other current assets 4,444,753 3,537,191
Total current assets 70,149,972 68,679,715
Property and equipment, net 731,129 880,647
Intangible assets, net 19,997,795 15,498,819
Other assets 3,025,236 2,554,557
Total assets 93,904,132 87,613,738
Current liabilities:    
Accounts payable 3,205,233 2,035,853
Other current liabilities 8,950,250 5,509,917
Total current liabilities 12,155,483 7,545,770
Revolving line of credit 0 0
Other long-term liabilities 863,356 776,125
Total liabilities 13,018,839 8,321,895
Commitments and contingencies      
Shareholders’ equity:    
Common stock—no par value; 100,000,000 shares authorized; 17,423,825 and 17,985,503 shares issued and outstanding as of September 30, 2014 and December 31, 2013, respectively 62,953,489 63,073,941
Retained earnings 18,149,350 16,394,540
Total shareholders’ equity 81,102,839 79,468,481
Noncontrolling interests (217,546) (176,638)
Total equity 80,885,293 79,291,843
Total liabilities and equity $ 93,904,132 $ 87,613,738