Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 5,321	$ 8,678
Contract and other receivables, net	958	3,865
Costs and estimated earnings in excess of billings on uncompleted contracts	211	181
Inventories, net	122	1,353
Prepaid expenses and other current assets	213	108
Total current assets	6,825	14,185
Property and equipment, net	786	705
Lease right-of-use asset	1,337	1,481
Goodwill	780	780
Intangible assets, net	284	307
Other assets	109	109
Total assets	10,121	17,567
Current Liabilities:
Accounts payable and accrued expenses	1,838	8,851
Deferred revenues	2,199	2,104
Current portion of lease liabilities	670	645
Total current liabilities	4,707	11,600
Long-term borrowings	2,079	2,028
Non-current portion of lease liabilities	780	956
Deferred revenues – non-current portion	113	114
Total liabilities	7,679	14,698
Commitments and Contingencies
Stockholders’ Equity:
Preferred stock, $.0001 par value; 1,000 shares authorized at March 31, 2020 and December 31, 2019; none issued
Common stock, $.0001 par value; 49,000 shares authorized at March 31, 2020 and December 31, 2019; 18,940 and 18,524 issued; 17,848 and 17,562 outstanding at March 31, 2020 and December 31, 2019, respectively	2	2
Additional paid-in capital	69,772	69,661
Treasury stock 1,092 and 962 shares at cost at March 31, 2020 and December 31, 2019	(1,870)	(1,700)
Accumulated deficit	(65,462)	(65,094)
Total stockholders' equity	2,442	2,869
Total liabilities and stockholders’ equity	$ 10,121	$ 17,567

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.

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

- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682