Stockholders’ Equity (Details) - USD ($)			3 Months Ended
	Apr. 11, 2019	Mar. 22, 2019	Mar. 31, 2019	Dec. 31, 2018
Preferred Stock
Preferred stock, Outstanding			0	0
Preferred stock, Authorized			2,000,000	2,000,000
Preferred Stock, Shares Issued			0	0
Common Stock
Common stock issued on exercise of stock options (in shares)			30,000
Amount of common stock issued on exercise of stock options			$ 147,900
Exercised (in dollars per share)			$ 4.93
Common shares sold			57,128,327	57,034,154
Common Stock, Par or Stated Value Per Share		$ 0
Sales Agreement, Threshold Sale Of Shares		$ 40,000,000
Common stock available for sale			$ 40,000,000
Maximum
Common Stock
Sales Agreement, Threshold Sale Of Shares		$ 40,000,000
Restricted stock units | Officer [Member]
Common Stock
Vested (in shares)			98,500
Withheld common shares (in shares)			34,327
Cost of withheld common shares			$ 95,429
Subsequent event
Common Stock
Exercised (in dollars per share)	$ 5.25
Common shares sold	437,043
Proceeds from the Issuance of Common Shares	$ 2,296,235
Common Share Issuance Costs	$ 57,406