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Condensed Consolidated Balance Sheets - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 35,906,655 $ 45,412,868
Marketable securities 14,803,349 4,672,476
Accounts receivable, net 5,806,095 8,395,112
Inventories, net 7,345,501 6,737,848
Other current assets 2,786,290 3,466,541
Total current assets 66,647,890 68,684,845
Property and equipment, net 550,492 528,882
Intangible assets, net 20,611,853 21,444,545
Deferred tax assets, net 87,210 87,210
Other assets 2,547,196 2,486,830
Total assets 90,444,641 93,232,312
Current liabilities:    
Accounts payable 10,065,882 8,979,929
Other current liabilities 6,748,405 8,714,814
Total current liabilities 16,814,287 17,694,743
Revolving line of credit 12,000,000.0 9,800,000
Other long-term liabilities 1,959,904 1,815,968
Total liabilities 30,774,191 29,310,711
Commitments and contingencies
Shareholders’ equity:    
Common stock—no par value; 100,000,000 shares authorized; 15,604,709 and 15,723,075 shares issued and outstanding as of June 30, 2018 and December 31, 2017, respectively 51,297,429 52,410,941
Retained earnings 8,609,295 11,709,222
Total shareholders’ equity 59,906,724 64,120,163
Noncontrolling interests (236,274) (198,562)
Total equity 59,670,450 63,921,601
Total liabilities and equity $ 90,444,641 $ 93,232,312