Note 3. Stock Options and Restricted Stock Units (Details)	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Option 1
Exercise Price Range	$0.01 - $1.00
Number of Options Outstanding	7,850
Weighted Average Remaining Contractual Life (in Years)	4 years 3 months 22 days
Weighted Average Exercise Price | $ / shares	$ .01
Number of Options Exercisable	7,850
Option 2
Exercise Price Range	$1.01 - $7.00
Number of Options Outstanding	10,000
Weighted Average Remaining Contractual Life (in Years)	8 years 1 month 20 days
Weighted Average Exercise Price | $ / shares	$ 6.80
Number of Options Exercisable	5,000
Option 3
Exercise Price Range	$7.01 - $8.00
Number of Options Outstanding	62,188
Weighted Average Remaining Contractual Life (in Years)	2 years 9 months 11 days
Weighted Average Exercise Price | $ / shares	$ 7.76
Number of Options Exercisable	62,188
Option 4
Exercise Price Range	$8.01 - $10.00
Number of Options Outstanding	5,250
Weighted Average Remaining Contractual Life (in Years)	7 years 2 months 26 days
Weighted Average Exercise Price | $ / shares	$ 9.26
Number of Options Exercisable	4,253
Option 5
Exercise Price Range	$10.01 - $13.49
Number of Options Outstanding	72,000
Weighted Average Remaining Contractual Life (in Years)	5 years 2 months 26 days
Weighted Average Exercise Price | $ / shares	$ 13.27
Number of Options Exercisable	35,000
Total
Number of Options Outstanding	157,288
Weighted Average Remaining Contractual Life (in Years)	4 years 5 months 19 days
Weighted Average Exercise Price | $ / shares	$ 9.89
Number of Options Exercisable	114,291