Note 4. Stock Options and Restricted Stock Units (Tables)

3 Months Ended

Mar. 31, 2019

Share-based Compensation [Abstract]

Stock options

		Options Outstanding						Options Exercisable
Exercise Price Range		Number		Weighted Average Remaining Contractual Life (in Years)		Weighted Average Exercise Price		Number
$	0.01 - 7.00		10,000		6.64	$	6.80		10,000
$	7.01 - 8.00		20,313		4.49	$	7.76		20,313
$	8.01 - 12.00		4,250		5.74	$	9.26		4,250
$	12.01 - 15.00		59,500		9.15	$	13.10		32,000
$	15.01 - 17.40		32,000		9.17	$	17.40		—
	Total		126,063		8.09	$	12.70		66,563