Condensed Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current Assets:
Cash	$ 16,793	$ 7,741
Trade accounts receivable, net of allowance for doubtful accounts of $56 and $36 respectively	3,455	3,486
Prepaid expenses and other current assets	1,530	216
Total current assets	21,778	11,443
Assets for lease, net	1,802	2,079
Property and equipment, net	258	249
Notes receivable	500
Other non-current assets	432	15
Long-term deferred tax assets	3,277	4,501
Total assets	28,047	18,287
Current liabilities:
Accounts payable	336	338
Accrued expenses	4,277	3,914
Deferred revenue	960	955
Other short-term liabilities	78
Total current liabilities	5,651	5,207
Long-term liabilities:
Other long-term liabilities	345	7
Total long-term liabilities	345	7
Stockholders' equity:
Common stock, $0.001 par value; 50,000,000 shares authorized; 6,640,833, and 6,556,221 shares issued, and 6,615,833 and 6,531,221 shares outstanding (treasury shares of 25,000, and 25,000, respectively)	7	7
Additional paid-in capital	19,764	19,400
Retained earnings (accumulated deficit)	2,280	(6,334)
Total stockholders' equity	22,051	13,073
Total liabilities and stockholders' equity	$ 28,047	$ 18,287