Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 9,657,000	$ 8,949,000
Short-term investments	1,988,000	6,923,000
Contract assets	42,000	39,000
Prepaid expenses and other assets	629,000	500,000
Total current assets	12,316,000	16,411,000
Fixed assets, net	384,000	457,000
Patents and other intangible assets, net	1,530,000	1,759,000
Other assets	10,000	10,000
Total Assets	14,240,000	18,637,000
Current Liabilities:
Accounts payable and accrued liabilities	946,000	1,080,000
Current portion of lease liabilities	190,000	216,000
Accrued compensation and taxes	321,000	341,000
Total current liabilities	1,457,000	1,637,000
Long Term Liabilities:
Long term lease liabilities	79,000	91,000
Total liabilities	1,536,000	1,728,000
Stockholders' Equity:
Preferred stock, $0.0001 par value, zero shares issued and outstanding	0	0
Common stock, $0.0001 par value, 26,702,261 and 26,697,261 shares issued and outstanding at June 30, 2019 and December 31, 2018, respectively	3,000	3,000
Additional paid-in capital	76,967,000	76,417,000
Accumulated deficit	(64,266,000)	(59,511,000)
Total stockholders' equity	12,704,000	16,909,000
Total Liabilities and Stockholders' Equity	$ 14,240,000	$ 18,637,000

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).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).