Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash	$ 2,009	$ 1,457
Trade accounts receivable, net of allowance for doubtful accounts of $35 and $35, respectively	1,850	1,315
Prepaid expenses and other current assets	216	111
Total current assets	4,075	2,883
Assets for lease, net	975	1,147
Property and equipment, net	247	193
Long-term deposits	15	15
Total assets	5,312	4,238
Current liabilities:
Accounts payable	185	488
Accrued expenses	2,256	2,670
Deferred revenue	535	531
Accrued interest		168
Accrued interest - related party	41	28
Loans payable net of debt discount of $0 and $9, respectively	44	1,018
Related party loans payable net of debt discount of $6 and $13, respectively	2,017	237
Total current liabilities	5,078	5,140
Long-term liabilities:
Deferred rent	12	13
Loans payable, less current portion	6	26
Related party loans payable, less current portion		1,642
Total long-term liabilities	18	1,681
Stockholders' equity (deficit):
Common stock, $0.001 par value; 50,000,000 shares authorized; 6,048,397 and 5,902,244 shares issued, and 6,023,397 and 5,877,244 outstanding (treasury shares of 25,000 and 25,000), respectively	6	6
Additional paid-in capital	24,484	23,843
Accumulated deficit	(24,274)	(26,432)
Total stockholders' equity (deficit)	216	(2,583)
Total liabilities and stockholders' equity (deficit)	$ 5,312	$ 4,238

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).