Stockholders' Equity (Details 1) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Employee Stock Option [Member]
Weighted Average Fair Value at Grant Date, Stock options granted during the three-month period ended March 31, 2020	$ 2.12	$ 3.16
Weighted Average Exercise Price, Stock options granted during the three-month period ended March 31, 2020	4.17		$ 5.90
Weighted Average Exercise Price, Stock options that were forfeited during the three-month period ended March 31, 2020	$ 5.88		$ 6.05
Equity Option [Member]
Number of Shares, Non-vested stock options as of January 1, 2020	321,000
Number of Shares, Non-vested stock options as of March 31, 2020	237,000		321,000
Number of Shares, Stock options granted during the three-month period ended March 31, 2020	22,000
Number of Shares, Stock options that vested during the three-month period ended March 31, 2020	102,000
Number of Shares, Stock options that were forfeited during the three-month period ended March 31, 2020	4,000
Weighted Average Fair Value at Grant Date, Non-vested stock options as of January 1, 2020	$ 3.49
Weighted Average Fair Value at Grant Date, Non-vested stock options as of March 31, 2020	3.39		$ 3.49
Weighted Average Fair Value at Grant Date, Stock options granted during the three-month period ended March 31, 2020	2.12
Weighted Average Fair Value at Grant Date, Stock options that vested during the three-month period ended March 31, 2020	3.44
Weighted Average Fair Value at Grant Date, Stock options that were forfeited during the three-month period ended March 31, 2020	3.08
Weighted Average Exercise Price, Non-vested stock options as of January 1, 2020	6.55
Weighted Average Exercise Price, Non-vested stock options as of March 31, 2020	6.58		$ 6.55
Weighted Average Exercise Price, Stock options granted during the three-month period ended March 31, 2020	4.17
Weighted Average Exercise Price, Stock options that vested during the three-month period ended March 31, 2020	6.00
Weighted Average Exercise Price, Stock options that were forfeited during the three-month period ended March 31, 2020	$ 5.88