Stock-Based Compensation; Changes in Equity (Details 1) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares Outstanding at the end of period (in shares)	143,094
Shares, Exercisable (in shares)	113,238
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share)	$ 5.22
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 5.21
Weighted Average Remaining Contractual Life, Outstanding (in years)	1 year 6 months
Weighted Average Remaining Contractual Life, Exercisable (in years)	1 year
Aggregate Intrinsic Value Outstanding (in dollars)	$ 65,518
Aggregate Intrinsic Value, Exercisable (in dollars)	$ 53,748
Warrant [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares Outstanding, beginning of period (in shares)	216,723
Shares, Cancelled (in shares)	0
Shares, Exercised (in shares)	0
Shares Outstanding at the end of period (in shares)	216,723	216,723
Shares, Exercisable (in shares)	76,675
Weighted Average Exercise Price, Outstanding, beginning of period (in dollars per share)	$ 2.48
Weighted Average Exercise Price, Cancelled (in dollars per share)	0
Weighted Average Exercise Price, Exercised (in dollars per share)	0
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share)	2.48	$ 2.48
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 7
Weighted Average Remaining Contractual Life, Outstanding (in years)	4 years	4 years 5 months 26 days
Weighted Average Remaining Contractual Life, Exercisable (in years)	2 years 29 days
Aggregate Intrinsic Value Outstanding (in dollars)	$ 794,072	$ 817,880
Aggregate Intrinsic Value, Exercisable (in dollars)	$ 0