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Condensed Consolidated Statements of Operations and Comprehensive Income (loss) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Statement [Abstract]    
Net revenues $ 11,902,747 $ 8,587,605
Costs and expenses:    
Cost of products sold 1,999,736 1,527,961
Selling and marketing 5,120,505 4,670,511
Research and development 1,267,601 1,874,939
General and administrative 2,670,056 2,330,281
Amortization 1,021,645 636,135
Total costs and expenses 12,079,543 11,039,827
Operating income (loss) (176,796) (2,452,222)
Interest income 115,861 82,494
Interest expense (60,911) (18,302)
Income (loss) before income taxes (121,846) (2,388,030)
Income tax (expense) benefit 81,428 (4,159)
Net income (loss) (40,418) (2,392,189)
Net (income) loss at subsidiary attributable to noncontrolling interests (33,460) 12,950
Net income (loss) attributable to common shareholders $ (73,878) $ (2,379,239)
Earnings (loss) per share attributable to common shareholders    
- basic (in dollars per share) $ 0 $ (0.15)
- diluted (in dollars per share) $ 0 $ (0.15)
Weighted-average shares outstanding    
- basic (in shares) 15,472,952 15,689,240
- diluted (in shares) 15,472,952 15,689,240
Comprehensive income (loss) attributable to common shareholders $ (73,878) $ (2,379,239)
Net (income) loss at subsidiary attributable to noncontrolling interests (33,460) 12,950
Total comprehensive income (loss) $ (40,418) $ (2,392,189)