Stock-Based Compensation (Details 1) - Stock Options [Member]	9 Months Ended
	Sep. 30, 2019 $ / shares shares
Summary of all stock option plans
Number of Options Outstanding, Beginning Balance | shares	99,800
Number of Options Outstanding, Cancelled | shares
Number of Options Outstanding, Expired | shares	(44,300)
Number of Options Outstanding, Ending Balance | shares	55,500
Weighted Average Exercise Price, Outstanding, Beginning Balance | $ / shares	$ 34.55
Weighted Average Exercise Price, Cancelled | $ / shares
Weighted Average Exercise Price, Expired | $ / shares	42.50
Weighted Average Exercise Price, Outstanding, Ending Balance | $ / shares	$ 28.20