Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 5,813,863	$ 8,772,567
Contracts receivable	714,893	1,206,777
Prepaid expenses	129,075	134,431
Total current assets	6,657,831	10,113,775
Office furniture and equipment, net	20,010	26,702
Intangible assets, net	95,781	126,628
Total assets	6,773,622	10,267,105
Current liabilities:
Accounts payable	1,611,282	1,708,091
Accrued expenses	1,482,684	806,118
Accrued compensation	57,744	355,648
Total current liabilities	3,151,710	2,869,857
Commitments and contingencies
Shareholders' equity:
Preferred stock, 350,000 shares authorized; none issued or outstanding
Common stock, $.001 par value; 25,000,000 and 10,000,000 shares authorized at June 30, 2017 and December 31, 2016, respectively; 5,682,753 shares and 5,470,032 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	5,683	5,470
Additional paid-in capital	157,784,226	157,514,740
Accumulated deficit	(154,167,997)	(150,122,962)
Total shareholders' equity	3,621,912	7,397,248
Total liabilities and shareholders' equity	$ 6,773,622	$ 10,267,105

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).