Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2019

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Expenses

Accrued expenses consist of the following:

	June 30, 2019		December 31, 2018
Accrued compensation expenses	$	1,553,276	$	1,832,630
Accrued professional services	85,997		76,224
Accrued royalties	58,795		119,630
Accrued other	1,003,947		871,645
Total	$	2,702,015	$	2,900,129