Commitments and contingencies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2016

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Minimum future annual operating lease obligations

2016 (remaining)	$	320,679
2017		439,330
2018		452,510
2019		466,085
2020		480,068
Thereafter		535,776
Total	$	2,694,448

2016	$	391,941
2017		439,330
2018		452,510
2019		466,085
2020		480,068
Thereafter		535,776
Total	$	2,765,710

Future minimum lease payments

2016 (remainder of)	$	17,480
2017		23,306
2018		23,306
2019		23,306
2020		23,306
2021 and thereafter		5,826
Less interest		(20,874	)
Principal		95,656
Less current portion		(16,051	)
Noncurrent portion	$	79,605