Other current assets (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 707,050	$ 537,891
Landlord receivable	258,104	678,604
Deposits	250,000	250,000
Income tax receivable	212,252	212,252
Rent	120,601	68,740
Other	195,812	64,300
Totals	$ 1,743,819	$ 1,811,787