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Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Income Statement [Abstract]    
Net revenues $ 9,636,755 $ 7,737,532
Costs and expenses:    
Cost of products sold 1,381,497 1,223,939
Selling and marketing 5,293,020 3,698,962
Research and development 898,363 706,472
General and administrative 2,110,233 2,077,972
Amortization 611,444 530,770
Total costs and expenses 10,294,557 8,238,115
Operating income (loss) (657,802) (500,583)
Interest income 52,535 77,129
Interest expense (31,715) (20,442)
Income (loss) before income taxes (636,982) (443,896)
Income tax (expense) benefit (656,587) 175,339
Net income (loss) (1,293,569) (268,557)
Net loss at subsidiary attributable to noncontrolling interests 19,123 15,446
Net income (loss) attributable to common shareholders $ (1,274,446) $ (253,111)
Earnings (loss) per share attributable to common shareholders    
- basic (in dollars per share) $ (0.08) $ (0.02)
- diluted (in dollars per share) $ (0.08) $ (0.02)
Weighted-average shares outstanding    
- basic (in shares) 16,042,219 16,341,481
- diluted (in shares) 16,042,219 16,341,481
Comprehensive income (loss) attributable to common shareholders $ (1,274,446) $ (253,111)
Net loss at subsidiary attributable to noncontrolling interests 19,123 15,446
Total comprehensive income (loss) $ (1,293,569) $ (268,557)