10. Share-Based Employee Compensation (Details 2) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Number of Options Outstanding	460,500	354,500
Weighted Average Exercise Price, outstanding	$ 4.22
Weighted Average Remaining Contractual Life (in Years)	7 years 29 days
Stock Options Exercisable	156,900
Weighted Average Exercise Price, exercisable	$ 4.03
Option 1
Exercise Price, minimum	1.89
Exercise Price, maximum	$ 3.75
Number of Options Outstanding	156,000
Weighted Average Exercise Price, outstanding	$ 3.47
Weighted Average Remaining Contractual Life (in Years)	8 years 4 months 28 days
Stock Options Exercisable	26,000
Weighted Average Exercise Price, exercisable	$ 2.22
Option 2
Exercise Price, minimum	3.83
Exercise Price, maximum	$ 5.10
Number of Options Outstanding	304,500
Weighted Average Exercise Price, outstanding	$ 4.60
Weighted Average Remaining Contractual Life (in Years)	6 years 4 months 20 days
Stock Options Exercisable	130,900
Weighted Average Exercise Price, exercisable	$ 4.39