Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 41,671,738	$ 33,718,713
Restricted cash	34,174	634,416
Total cash, cash equivalents and restricted cash	41,705,912	34,353,129
Accounts receivable	2,629,840	3,461,938
Tax refund receivable	1,080,559	1,008,973
Prepaid expenses and other current assets	688,862	548,094
Total current assets	46,105,173	39,372,134
Property and equipment, net	1,222,130	1,342,802
Right of use asset	732,380
Intangible assets, net	13,760,216	13,851,924
Other assets	156,115	183,682
Total assets	61,976,014	54,750,542
Current liabilities:
Notes payable	163,724	71,596
Accounts payable	270,097	372,860
Accrued expenses and other current liabilities	3,046,567	4,082,949
Total current liabilities	3,480,388	4,527,405
Deferred income taxes	58,500	58,500
Other long-term liabilities	2,212,104	1,852,071
Total liabilities	5,750,992	6,437,976
Commitments and contingencies (Note 12)
Stockholders’ equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized; 13,451,106 and 9,078,735 shares issued; 13,450,751 and 9,078,238 shares outstanding at June 30, 2019 and December 31, 2018, respectively	1,313	876
Additional paid-in capital	183,604,057	170,207,844
Accumulated deficit	(122,340,185)	(116,855,991)
Accumulated other comprehensive loss – foreign currency translation adjustments	(5,040,163)	(5,040,163)
Total stockholders’ equity	56,225,022	48,312,566
Total liabilities and stockholders’ equity	$ 61,976,014	$ 54,750,542