Leases

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

Leases of Lessee Disclosure [Text Block]

9. Leases

Future minimum lease payments for noncancellable operating leases as of December 31, 2016, are as follows:

2017	$	767,450
2018		26,677
2019		—
2020		—
2021		—
Thereafter		—
Total minimum lease payments	$	794,127

Rent expense for operating leases was $866,768,  $736,249 and $743,323 for the years ended December 31, 2014, 2015 and 2016, respectively.