ParkerVision (PRKR) 10-K 17 Mar 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 13, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Entity Registrant Name	'PARKERVISION INC	'	'
Entity Central Index Key	'0000914139	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Common Stock, Shares Outstanding	'	96,290,722	'
Entity Public Float	'	'	$390,664,229
Trading Symbol	'prkr	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Well-known Seasoned Issuer	'No	'	'

Balance_Sheets

Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:	'	'
Cash and cash equivalents	$222,697	$298,227
Available for sale securities	16,957,489	8,041,904
Prepaid expenses and other	551,961	977,310
Total current assets	17,732,147	9,317,441
PROPERTY AND EQUIPMENT, net	307,385	403,446
INTANGIBLE ASSETS, net	8,552,432	8,978,101
OTHER ASSETS, net	2,576	20,866
Total assets	26,594,540	18,719,854
CURRENT LIABILITIES:	'	'
Accounts payable	1,246,470	827,209
Accrued expenses:	'	'
Salaries and wages	325,313	295,194
Professional fees	631,871	902,411
Other accrued expenses	289,031	42,231
Deferred rent, current portion	33,894	75,144
Total current liabilities	2,526,579	2,142,189
LONG TERM LIABILITES	'	'
Captial lease, net of current portion	7,290	33,915
Deferred rent, net of current portion	14,379	23,763
Total long term liabilities	21,669	57,678
Total liabilities	2,548,248	2,199,867
COMMITMENTS AND CONTINGENCIES	'	'
SHAREHOLDERS' EQUITY:	'	'
Common stock, $.01 par value, 150,000,000 shares authorized, 93,208,471 and 82,903,609 issued and outstanding at December 31, 2013 and 2012, respectively	932,085	829,036
Accumulated other comprehensive loss	-8,215	-20
Warrants outstanding	663,100	1,081,050
Additional paid-in capital	312,470,030	276,748,336
Accumulated deficit	-290,010,708	-262,138,415
Total shareholders' equity	24,046,292	16,519,987
Total liabilities and shareholders' equity	$26,594,540	$18,719,854

Balance_Sheets_Parenthetical

Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Oct. 04, 2012	Dec. 31, 2011
Balance Sheets [Abstract]	'	'	'	'
Common stock, par value	$0.01	$0.01	'	'
Common stock, shares authorized	150,000,000	150,000,000	150,000,000	100,000,000
Common stock, shares issued	93,208,471	82,903,609	'	'
Common stock, shares outstanding	93,208,471	82,903,609	'	'

Statements_Of_Comprehensive_Lo

Statements Of Comprehensive Loss (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statements Of Comprehensive Loss [Abstract]	'	'	'
Revenue	$0	$0	$0
Cost of sales	0	0	0
Gross margin	0	0	0
Research and development expenses	10,406,362	8,447,639	8,423,683
Marketing and selling expenses	1,755,130	1,638,156	1,449,501
General and administrative expenses	15,787,599	10,297,238	4,802,503
Total operating expenses	27,949,091	20,383,033	14,675,687
Interest and other income	83,892	70,064	108,050
Interest expense	-7,094	-8,843	-5,716
Total interest and other income and interest expense	76,798	61,221	102,334
Net loss	-27,872,293	-20,321,812	-14,573,353
Other comprehensive (loss) income, net of tax:	'	'	'
Unrealized gain (loss) on available for sale securities	-8,195	10,398	-2,602
Other comprehensive income (loss), net of tax	-8,195	10,398	-2,602
Comprehensive loss	($27,880,488)	($20,311,414)	($14,575,955)
Basic and diluted net loss per common share	($0.31)	($0.27)	($0.24)

Statements_Of_Shareholders_Equ

Statements Of Shareholders' Equity (USD $)	Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Warrant [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Shareholders' equity - beginning of year at Dec. 31, 2010	$527,520	($7,816)	$16,534,516	$226,780,738	($227,243,250)	$16,591,708
Shareholders' equity - beginning of year, shares at Dec. 31, 2010	52,752,036	'	'	'	'	'
Issuance of common stock upon exercise of options and warrants	6,875	'	'	498,867	'	330,938
Issuance of common stock upon exercise of options and warrants, shares	687,461	'	'	'	'	'
Issuance of common stock and warrants in private and public offerings	138,235	'	'	10,001,901	'	10,556,754
Issuance of common stock and warrants in private and public offerings, shares	13,823,477	'	'	'	'	'
Share-based compensation	3,108	'	'	1,434,066	'	1,437,174
Share-based compensation, shares	310,801	'	'	'	'	'
Change in unrealized (loss) gain on available for sale securities	'	-2,602	'	'	'	'
Exercise of warrants	'	'	-174,804	'	'	'
Expiration of warrants	'	'	-8,126,544	8,126,544	'	'
Issuance of warrants in connection with pubilc offering	'	'	416,618	'	'	'
Net loss	'	'	'	'	-14,573,353	-14,573,353
Comprehensive loss	'	'	'	'	'	-14,575,955
Shareholders' equity - end of year at Dec. 31, 2011	675,738	-10,418	8,649,786	246,842,116	-241,816,603	14,340,619
Shareholders' equity - end of year, shares at Dec. 31, 2011	67,573,775	'	'	'	'	'
Issuance of common stock upon exercise of options and warrants	22,581	'	'	2,042,922	'	1,381,694
Issuance of common stock upon exercise of options and warrants, shares	2,258,188	'	'	'	'	'
Issuance of common stock and warrants in private and public offerings	125,209	'	'	17,430,465	'	17,555,674
Issuance of common stock and warrants in private and public offerings, shares	12,520,811	'	'	'	'	'
Share-based compensation	5,508	'	'	3,547,906	'	3,553,414
Share-based compensation, shares	550,835	'	'	'	'	'
Change in unrealized (loss) gain on available for sale securities	'	10,398	'	'	'	'
Exercise of warrants	'	'	-683,809	'	'	'
Expiration of warrants	'	'	-6,884,927	6,884,927	'	'
Issuance of warrants in connection with pubilc offering	'	'	0	'	'	'
Net loss	'	'	'	'	-20,321,812	-20,321,812
Comprehensive loss	'	'	'	'	'	-20,311,414
Shareholders' equity - end of year at Dec. 31, 2012	829,036	-20	1,081,050	276,748,336	-262,138,415	16,519,987
Shareholders' equity - end of year, shares at Dec. 31, 2012	82,903,609	'	'	'	'	82,903,609
Issuance of common stock upon exercise of options and warrants	11,975	'	'	1,553,355	'	1,147,380
Issuance of common stock upon exercise of options and warrants, shares	1,197,541	'	'	'	'	'
Issuance of common stock and warrants in private and public offerings	83,966	'	'	27,244,009	'	27,327,975
Issuance of common stock and warrants in private and public offerings, shares	8,396,573	'	'	'	'	'
Share-based compensation	7,108	'	'	6,924,330	'	6,931,438
Share-based compensation, shares	710,748	'	'	'	'	'
Change in unrealized (loss) gain on available for sale securities	'	-8,195	'	'	'	'
Exercise of warrants	'	'	-417,950	'	'	'
Expiration of warrants	'	'	0	0	'	'
Issuance of warrants in connection with pubilc offering	'	'	0	'	'	'
Net loss	'	'	'	'	-27,872,293	-27,872,293
Comprehensive loss	'	'	'	'	'	-27,880,488
Shareholders' equity - end of year at Dec. 31, 2013	$932,085	($8,215)	$663,100	$312,470,030	($290,010,708)	$24,046,292
Shareholders' equity - end of year, shares at Dec. 31, 2013	93,208,471	'	'	'	'	93,208,471

Statements_Of_Cash_Flows

Statements Of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'
Net loss	($27,872,293)	($20,321,812)	($14,573,353)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'	'
Depreciation and amortization	1,252,142	1,238,044	1,327,794
Share-based compensation	6,931,438	3,553,414	1,437,174
Loss on disposal of equipment and other assets	126	621	0
Realized loss (gain) on available for sale securities	12,226	-5,220	1,671
Changes in operating assets and liabilities:	'	'	'
Prepaid and other assets	443,639	248,411	-125,463
Accounts payable and accrued expenses	421,943	768,096	470,962
Deferred rent	-50,634	-145,237	24,668
Total adjustments	9,010,880	5,658,129	3,136,806
Net cash used in operating activities	-18,861,413	-14,663,683	-11,436,547
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'
Purchase of available for sale securities	-27,096,006	-16,799,888	-9,439,760
Proceeds from redemption of available for sale securities	18,160,000	13,800,000	10,725,000
Purchases of property and equipment	-78,509	-135,541	-100,649
Payments for patent costs and other intangible assets	-652,029	-1,026,736	-609,851
Net cash (used in) provided by investing activities	-9,666,544	-4,162,165	574,740
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'
Net proceeds from issuance of common stock in public and private offerings	27,327,975	17,555,674	10,556,754
Net proceeds from exercise of options and warrants	1,147,380	1,381,694	330,938
Principal payments on capital lease obligation	-22,928	-26,731	-25,845
Net cash provided by financing activities	28,452,427	18,910,637	10,861,847
NET CHANGE IN CASH AND CASH EQUIVALENTS	-75,530	84,789	40
CASH AND CASH EQUIVALENTS, beginning of year	298,227	213,438	213,398
CASH AND CASH EQUIVALENTS, end of year	222,697	298,227	213,438
SUPPLEMENTAL CASH FLOW INFORMATION:	'	'	'
Cash paid for interest expense	7,095	8,843	5,716
Cash paid for income taxes	0	0	0
SUPPLEMENTAL SCHEDULE OF NON-CASH ACTIVITIES:	'	'	'
Key-man life insurance premiums (Note 3)	0	29,330	45,780
Purchases of leasehold improvements (Note 11)	0	30,462	27,572
Purchase of equipment under capital lease (Note 5)	$0	$71,925	$0

The_Company_And_Nature_Of_Busi

The Company And Nature Of Business	12 Months Ended
	Dec. 31, 2013
Description Of Business [Abstract]	'
The Company And Nature Of Business	'
	1. THE COMPANY AND NATURE OF BUSINESS
	We were incorporated under the laws of the state of Florida on August 22, 1989 and currently operate in a single segment - wireless technologies and products.  We are in the business of innovating fundamental wireless technologies.   We design, develop and market our proprietary RF technologies and products for use in semiconductor circuits for wireless communication products.   Our business is expected to include licensing of our intellectual property and/or the sale of integrated circuits based on our technology for incorporation into wireless devices designed by our customers.   In addition, from time to time, we offer engineering consulting and design services to our customers, for a negotiated fee, to assist them in developing prototypes and/or products incorporating our technologies.

Liquidity

Liquidity	12 Months Ended
	Dec. 31, 2013
Liquidity [Abstract]	'
Liquidity	'
	2. LIQUIDITY
	We have incurred losses from operations and negative cash flows in every year since inception and have utilized the proceeds from the sales of our equity securities to fund our operations.   For the year ended December 31, 2013, we incurred a net loss of approximately $27.9 million and negative cash flows from operations of approximately $18.9 million.  At December 31, 2013, we had an accumulated deficit of approximately $290.0 million and working capital of approximately $15.2 million.  We expect that revenue for 2014 will not be sufficient to cover our operational expenses for 2014, and that our expected continued losses and use of cash will be funded from available working capital.  In addition, we expect that available working capital will be used for initial production start-up costs, including test programs and production tooling, and for litigation expenses to defend our intellectual property.
	Our current capital resources include cash and available for sale securities of approximately $17.2 million at December 31, 2013 and approximately $11.9 million in proceeds from the sale of equity securities in March 2014 (see Note 9).  These current capital resources are sufficient to support our liquidity requirements through 2014 and beyond.
	Our future business plans call for continued investment in sales, marketing, customer support and product development for our technologies and products, as well as investment in continued protection of our intellectual property including prosecution of new patents and defense of existing patents.  Our ability to generate revenues sufficient to offset costs is subject to securing new product and licensing customers for our technologies, successfully supporting our customers in completing their product designs,  and/or successfully protecting or defending our intellectual property.
	The long-term continuation of our business plan beyond 2014 is dependent upon the generation of sufficient revenues from our technologies and/or products to offset expenses.  In the event that we do not generate sufficient revenues, we will be required to obtain additional funding through public or private financing and/or reduce operating costs.  Failure to generate sufficient revenues, raise additional capital through debt or equity financings, and/or reduce operating costs could have a material adverse effect on our ability to meet our long-term liquidity needs and achieve our intended long-term business objectives.

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Summary Of Significant Accounting Policies	'
	3.SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Basis of Presentation
	Our financial statements are prepared in accordance with generally accepted accounting principles.
	Use of Estimates in the Preparation of Financial Statements
	The preparation of financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods.  The more significant estimates made by us include the volatility, forfeiture rate and estimated lives of share-based awards used in the estimate of the fair market value of share-based compensation, the assessment of recoverability of long-lived assets, the amortization periods for intangible and long-lived assets, and the valuation allowance for deferred taxes.   Actual results could differ from the estimates made.  We periodically evaluate estimates used in the preparation of the financial statements for continued reasonableness.  Appropriate adjustments, if any, to the estimates used are made prospectively based upon such periodic evaluation.
	Cash and Cash Equivalents
	We consider cash and cash equivalents to include cash on hand, interest-bearing deposits, overnight repurchase agreements and investments with original maturities of three months or less when purchased.
	Available for Sale Securities
	Available for sale securities are intended to be held for indefinite periods of time and are not intended to be held to maturity. These securities are recorded at fair value and any unrealized holding gains and losses, net of the related tax effect, are excluded from earnings and are reported as a separate component of accumulated other comprehensive loss until realized. Our available for sale securities at December 31, 2013 and 2012 consisted of mutual funds that invest primarily in short-term municipal securities with an average effective maturity of one year or less. All dividends and realized gains are recognized as other income as earned and immediately reinvested.  The Company has determined that the fair value of its available for sale securities fall within Level 1 in the fair value hierarchy (See Note 14).
	Property and Equipment
	Property and equipment are stated at cost, less accumulated depreciation. Depreciation is determined using the straight-line method over the following estimated useful lives:
	Manufacturing and office equipment	5-7 years
	Leasehold improvements	Remaining life of lease
	Furniture and fixtures	7 years
	Computer equipment and software	3-5 years
	The cost and accumulated depreciation of assets sold or retired are removed from their respective accounts, and any resulting net gain or loss is recognized in the accompanying statements of comprehensive loss.  The carrying value of long-lived assets is reviewed on a regular basis for the existence of facts, both internally and externally, that may suggest impairment. Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset.  If the carrying amount of the assets exceeds its estimated undiscounted future net cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the assets.
	Long-lived assets to be sold are classified as held for sale in the period in which there is an approved plan for sale of the assets within one year, and it is unlikely that the plan will be withdrawn or changed.  Long-lived assets held for sale are recorded at the lower of their carrying amount or fair value less estimated costs to sell.
	Intangible Assets
	Patents, copyrights and other intangible assets are amortized using the straight-line method over their estimated period of benefit.  We estimate the economic lives of our patents and copyrights to be fifteen to twenty years.  We estimate the economic lives of other intangible assets, including licenses, based on estimated technological obsolescence, to be two to five years, which is generally shorter than the contractual lives.   Management evaluates the recoverability of intangible assets periodically and takes into account events or circumstances that may warrant revised estimates of useful lives or that may indicate impairment exists.
	Key-man Life Insurance
	In 2012 and 2011, we paid the premiums on certain whole-life policies, in the amount of approximately $29,000 and $46,000, respectively, through the use of annual policy dividends and loans against the policies.   These policies were surrendered in favor of term-life policies in 2012 and 2013. (See Note 4).
	Accounting for Share-Based Compensation
	We have various share-based compensation programs which provide for equity awards including stock options, restricted stock units (“RSUs”) and restricted stock awards (“RSAs”). We calculate the fair value of employee share-based equity awards on the date of grant and recognize the calculated fair value, net of estimated forfeitures, as compensation expense over the requisite service periods of the related awards.  We estimate the fair value of each equity award using the Black-Scholes option valuation model or the Monte Carlo simulation fair value model for awards that contain market conditions.  These valuation models require the use of highly subjective assumptions and estimates including (i) how long employees will retain their stock options before exercising them, (ii) the volatility of our common stock price over the expected life of the equity award, and (iii) the rate at which equity awards will ultimately be forfeited by the recipients.  Such estimates, and the basis for our conclusions regarding such estimates, are outlined in detail in Note 8.  Estimates of fair value are not intended to predict actual future events or the value ultimately realized by persons who receive equity awards.
	Revenue Recognition
	We did not recognize any product or royalty revenue in 2013, 2012, or 2011.   We recognize revenue when there is persuasive evidence of an arrangement, the amounts are fixed and determinable, and the collectability of the resulting receivable is reasonably assured.
	Research and Development Expenses
	Research and development costs are expensed as incurred and include salaries and benefits, costs paid to third party contractors, prototype expenses, maintenance costs for software development tools, depreciation, amortization, and an allocated portion of facilities costs.
	Loss per Common Share
	Basic loss per common share is determined based on the weighted-average number of common shares outstanding during each year.  Diluted loss per common share is the same as basic loss per common share as all potential common shares are excluded from the calculation, as their effect is anti-dilutive.  The weighted-average number of common shares outstanding for the years ended December 31, 2013, 2012, and 2011, was 88,968,043,  75,999,278,  and 60,038,857, respectively.
	Options and warrants to purchase 8,888,727,  10,482,608,  and 11,105,288, shares of common stock were outstanding at December 31, 2013, 2012, and 2011, respectively.   In addition, unvested RSUs representing 1,882,384,  1,433,842,  and 1,104,377 shares of common stock were outstanding at December 31, 2013, 2012, and 2011, respectively.  These options, warrants and RSUs were excluded from the computation of diluted loss per share as their effect would have been anti-dilutive.
	Leases
	Our facilities are leased under operating leases.  For those leases that contain rent escalations or rent concessions, we record the total rent payable during the lease term on a straight-line basis over the term of the lease with the difference between the rents paid and the straight-line rent recorded as a deferred rent liability in the accompanying balance sheets.
	Income Taxes
	The provision for income taxes is based on loss before taxes as reported in the accompanying statements of comprehensive loss.  Deferred tax assets and liabilities are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax assets and liabilities are determined based on differences between the financial statement carrying amounts and the tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse.  Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not that the benefit of such assets will not be realized.  Our deferred tax assets exclude unrecognized tax benefits which do not meet a more-likely-than-not threshold for financial statement recognition for tax positions taken or expected to be taken in a tax return.
	We utilize the short-cut method for establishing the historical pool of windfall tax benefits related to employee share-based compensation. We do not recognize deferred tax assets with regard to the excess of tax over book stock compensation until the tax deductions actually reduce current taxes payable at which time the tax benefit would be recorded as an increase in additional paid-in-capital.
	Recent Accounting Pronouncements
	In July 2013, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) No. 2013-11, “Presentation of an unrecognized tax benefit when a net operating loss (“NOL”) carry-forward, a similar tax loss, or tax credit carry-forward exists.” ASU 2013-11 requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a NOL carry-forward, a similar tax loss, or a tax credit carry-forward when settlement in this manner is available under the tax law. This guidance is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of ASU 2013-11 is not expected to have an impact on our financial statements.

Prepaid_Expenses_And_Other

Prepaid Expenses And Other	12 Months Ended
	Dec. 31, 2013
Prepaid Expenses And Other [Abstract]	'
Prepaid Expenses And Other	'
	4. PREPAID EXPENSES AND OTHER
	Prepaid expenses and other current assets consisted of the following at December 31, 2013 and 2012:
			2013		2012
	Prepaid insurance	$	409,790	$	401,373
	Cash surrender value of life insurance		0		456,452
	Other current assets		142,171		119,485
		$	551,961	$	977,310
	In January 2013, we surrendered a key-man whole life policy in favor of a term-life policy.  The aggregate net cash surrender value of the whole-life policy at December 31, 2012, as determined by the insurance carrier, was included in prepaid and other current assets.

Property_And_Equipment_Net

Property And Equipment, Net	12 Months Ended
	Dec. 31, 2013
Property And Equipment, Net [Abstract]	'
Property And Equipment, Net	'
	5. PROPERTY AND EQUIPMENT, NET
	Property and equipment, at cost, consisted of the following at December 31, 2013 and 2012:
		2013		2012
	Equipment and software	$	8,158,454	$	8,082,091
	Leasehold improvements		837,377		837,377
	Furniture and fixtures		502,397		505,428
			9,498,228		9,424,896
	Less accumulated depreciation and amortization		-9,190,843		-9,021,450
		$	307,385	$	403,446
	Depreciation expense related to property and equipment was $174,444, $185,146, and $314,113,  in 2013, 2012, and 2011, respectively.  Depreciation expense includes depreciation related to capital leases of approximately $28,748, $24,100, and $14,371 for the periods ended December 31, 2013, 2012, and 2011 respectively.  Accumulated depreciation included accumulated depreciation related to capital leases as of December 31, 2013, 2012, and 2011 of  $87,654, $58,906,  and $34,806, respectively.
	In April 2012, we purchased engineering equipment under a capital lease and recorded a corresponding capital lease obligation of approximately $72,000.  The lease has a three-year term with monthly payments of approximately $2,500 and an annual implicit interest rate of approximately 15.25%.  The principal payments are reflected as cash outflows from financing activities in the accompanying statements of cash flows.

Intangible_Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2013
Intangible Assets [Abstract]	'
Intangible assets	'
	6. INTANGIBLE ASSETS
	Intangible assets consisted of the following at December 31, 2013 and 2012:
		2013
		Gross Carrying Amount			Accumulated Amortization			Net Value
	Patents and copyrights	$	18,943,020		$	10,397,136		$	8,545,884
	Prepaid licensing fees		574,000			567,452			6,548
		$	19,517,020		$	10,964,588		$	8,552,432
		2012
		Gross Carrying Amount			Accumulated Amortization			Net Value
	Patents and copyrights	$	18,290,991		$	9,329,438		$	8,961,553
	Prepaid licensing fees		574,000			557,452			16,548
		$	18,864,991		$	9,886,890		$	8,978,101
	Periodically, we evaluate the recoverability of our intangible assets and take into account events or circumstances that may warrant revised estimates of useful lives or that may indicate impairment exists (“Triggering Event”).  Based on our cumulative net losses and negative cash flows from operations to date, we assess our working capital needs on an annual basis.  This annual assessment of our working capital is considered to be a Triggering Event for purposes of evaluating the recoverability of our intangible assets.  As a result of our evaluation at December 31, 2013, we determined that no impairment exists with regard to our intangible assets.
	Patent costs represent legal and filing costs incurred to obtain patents and trademarks for product concepts and methodologies that we have developed.  Capitalized patent costs are amortized over the estimated lives of the related patents, ranging from fifteen to twenty years.  Prepaid licensing fees represent costs incurred to obtain licenses for use of certain technologies in future products.  Prepaid license fees are amortized over their estimated economic lives, generally two to five years.
	Amortization expense for the years ended December 31, 2013, 2012, and 2011 is as follows:
				Amortization Expense
		Weighted average estimated life (in years)
				2013			2012			2011
	Patents and copyrights	17		$	1,067,698		$	1,049,446		$	1,013,681
	Prepaid licensing fees	2			10,000			3,452			0
	Total amortization			$	1,077,698		$	1,052,898		$	1,013,681
	Future estimated amortization expense for intangible assets that have remaining unamortized amounts as of December 31, 2013 are as follows:
	2014	$	1,054,955
	2015		953,970
	2016		917,996
	2017		915,396
	2018		859,572
	2019 and thereafter		3,850,543
	Total	$	8,552,432

Income_Taxes_And_Tax_Status

Income Taxes And Tax Status	12 Months Ended
	Dec. 31, 2013
Income Taxes And Tax Status [Abstract]	'
Income Taxes And Tax Status	'
	7. INCOME TAXES AND TAX STATUS
	A reconciliation between the provision for income taxes and the expected tax benefit using the federal statutory rate of 34% for the years ended December 31, 2013,  2012, and 2011 is as follows:
		2013		2012		2011
	Tax benefit at statutory rate	$	-9,476,580		-6,909,416		-4,954,940
	State tax benefit		-975,530		-711,263		-510,067
	Increase in valuation allowance		10,648,966		7,640,454		5,722,492
	Research and development credit		-299,044		-239,216		-272,117
	Capital loss		0		0		-38,439
	Other		102,188		219,441		53,071
		$	0	$	0	$	0
	Our deferred tax assets and liabilities relate to the following sources and differences between financial accounting and the tax bases of our assets and liabilities at December 31, 2013 and 2012:
		2013		2012
	Gross deferred tax assets:
	Net operating loss carry-forward	$	94,742,725	$	85,844,921
	Research and development credit		7,618,821		7,319,776
	Stock compensation		3,548,655		2,882,576
	Patents and other		1,828,103		1,770,367
	Fixed assets		121,179		125,737
	Accrued liabilities		80,204		64,507
	Capital loss carry-forward		5,652		38,439
	Charitable Contributions		4,500		0
			107,949,839		98,046,323
	Less valuation allowance		-107,949,839		-98,006,927
			0		39,396
	Gross deferred tax liabilities:
	Gains on the cash surrender value of life insurance		0		39,396
			0		39,396
	Net deferred tax asset	$	0	$	0
	No current or deferred tax provision or benefit was recorded for 2013,  2012,  or 2011 as a result of current losses and fully deferred tax valuation allowances for all periods.  We have recorded a valuation allowance to state our deferred tax assets at their estimated net realizable value due to the uncertainty related to realization of these assets through future taxable income.
	At December 31, 2013, we had cumulative NOL, research and development (“R&D”) tax credit carry-forwards and capital loss carry-forwards for income tax purposes of $258,088,247,  $7,618,821, and $15,072 respectively, which expire in varying amounts from 2015 through 2033.  The cumulative NOL carry-forward is net of $13,432,293 in carry-forwards from 1993 through 1997 which expired unused from 2008 through 2012.  The NOL carry-forward for income tax purposes includes $1,747,888 related to windfall tax benefits from the exercise of share-based compensation awards for which benefit will be recognized as an adjustment to equity rather than a decrease in earnings if realized.  The cumulative R&D tax credit carry-forward is net of $496,329 in credits from 1995 through 1997 that expired unused from 2010 through 2012.
	Our ability to benefit from the our tax credit carry-forwards could be limited under certain provisions of the Internal Revenue Code if our ownership changes by more than 50%, as defined by Section 382 of the Internal Revenue Code of 1986 (“Section 382”). Under Section 382, an ownership change may limit the amount of NOL, capital loss and R&D credit carry-forwards that can be used annually to offset future taxable income and tax, respectively.  In general, an ownership change, as defined by Section 382, results from transactions increasing the ownership of certain shareholders or public groups in the stock of a corporation by more than 50 percentage points over a three-year period.  We conduct a study annually of our ownership changes.  Based on the results of our studies, we have determined that we do not have any ownership changes on or prior to December 31, 2013 which would result in limitations of our NOL, capital loss or R&D credit carry-forwards under Section 382.
	Uncertain Tax Positions
	We file income tax returns in the U.S. federal jurisdiction and various state jurisdictions.  We have identified our Federal and Florida tax returns as our only major jurisdictions, as defined.  The periods subject to examination for those returns are the 1996 through 2013 tax years.
	At December 31, 2013, we had an unrecognized tax benefit of approximately $1.4 million.  A reconciliation of the amount recorded for unrecognized tax benefits for the years ended December 31, 2013,  2012, and 2011 is as follows:
		For the years ended December 31,
		2013		2012		2011
	Unrecognized tax benefits – beginning of year	$	1,369,614		1,369,614		1,369,614
	Gross increases – tax positions in prior period		0		0		0
	Change in Estimate		0		0		0
	Unrecognized tax benefits – end of year	$	1,369,614		1,369,614		1,369,614
	Future changes in the unrecognized tax benefit will have no impact on the effective tax rate due to the existence of a valuation allowance.   Approximately $0.47 million, net of tax effect, of the unrecognized tax benefit is related to excess tax benefits related to share-based compensation which would be recorded as an adjustment to equity rather than a decrease in earnings, if reversed.
	Our policy is that we recognize interest and penalties accrued on any unrecognized tax benefits as a component of our income tax expense.  We do not have any accrued interest or penalties associated with any unrecognized tax benefits.  For the years ended December 31, 2013, 2012,  and 2011, we did not incur any income tax-related interest income, expense or penalties.

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2013
Share-Based Compensation [Abstract]	'
Share-Based Compensation	'
	8. SHARE-BASED COMPENSATION
	We did not capitalize any expense related to share-based payments.  The following table presents share-based compensation expense included in our statements of comprehensive loss for the years ended December 31, 2013, 2012, and 2011, respectively:
		Year ended December 31,
		2013			2012			2011
	Research and development expense	$	1,594,603		$	765,126		$	706,734
	Sales and marketing expense		327,199			207,125			121,384
	General and administrative expense		5,009,636			2,581,163			609,056
	Total share-based expense	$	6,931,438		$	3,553,414		$	1,437,174
	As of December 31, 2013, there was $4,131,257 of total unrecognized compensation cost, net of estimated forfeitures, related to all non-vested share-based compensation awards.  That cost is expected to be recognized over a weighted-average period of 1.1 years.
	Stock Incentive Plans
	2000 Performance Equity Plan
	We adopted a performance equity plan in July 2000 (the “2000 Plan”). The 2000 Plan provides for the grant of options and other stock awards to employees, directors and consultants, not to exceed 5,000,000 shares of common stock.  The 2000 Plan provides for benefits in the form of nonqualified stock options, stock appreciation rights, restricted share awards, stock bonuses and various stock benefits or cash.  Prior to July 2010, the 2000 Plan also provided for awards of incentive stock options.   Forfeited and expired options under the 2000 Plan become available for reissuance.   The plan provides that no participant may be granted awards in excess of 1,000,000 shares in any calendar year.  At December 31, 2013, 631,134 shares of common stock were available for future grants.
	2008 Equity Incentive Plan
	We adopted an equity incentive plan in August 2008 (the “2008 Plan”).  The 2008 Plan provides for the grant of stock-based awards to employees (excluding named executives), directors and consultants, not to exceed 500,000 shares of common stock.  The 2008 Plan provides for benefits in the form of incentive stock options, nonqualified stock options, stock appreciation rights, restricted share awards, and other stock based awards.  Forfeited and expired options under the 2008 Plan become available for reissuance.  The plan provides that no participant may be granted awards in excess of 50,000 shares in any calendar year.  At December 31, 2013, 8,315 shares of common stock were available for future grants.
	2011 Long-Term Incentive Equity Plan
	We adopted a long-term incentive equity plan in September 2011 (the “2011 Plan”).  The 2011 Plan provides for the grant of stock-based awards to employees, officers, directors and consultants, not to exceed 5,000,000 shares of common stock.  The Plan provides for benefits in the form of incentive stock options, nonqualified stock options, stock appreciation rights, restricted share awards, and other stock based awards.  Forfeited and expired options under the 2011 Plan become available for reissuance.  The plan provides that no participant may be granted awards in excess of 1,500,000 shares in any calendar year.  At December 31, 2013, 7,000 shares of common stock were available for future grants.
	Restricted Stock Awards
	RSAs are issued as executive and employee incentive compensation and as payment for services to others.  The value of the award is based on the closing price of our common stock on the date of grant.  RSAs are generally immediately vested.   We had no unvested RSAs at December 31, 2013, 2012, or 2011 and no RSAs were forfeited during 2013, 2012, or 2011.
	Restricted Stock Units
	RSUs are issued as incentive compensation to executives, employees, and non-employee directors as well as payment for services to consultants.   Each RSU represents a right to one share of our common stock, upon vesting.  The RSUs are not entitled to voting rights or dividends, if any, until vested.  RSUs generally vest over a three year period for employee awards, a one year period for non-employee director awards and the life of the related service contract for third-party awards.  The fair value of RSUs is generally based on the closing price of our common stock on the date of grant and is amortized to share-based compensation expense over the estimated life of the award, generally the vesting period.   In the case of RSUs issued to consultants, the fair value is recognized based on the closing price of our common stock on each vesting date.
	Plan-Based RSAs and RSU
	The following table presents a summary of RSA and RSU activity under the 2000, 2008, and 2011 Plans (collectively, the “Stock Plans”) as of December 31, 2013:
		Non-vested Shares
		Shares		Weighted-Average Grant-Date Fair Value
	Non-vested at beginning of year	953,842		$	2.67
	Granted	259,290			3.99
	Vested	-214,082			3.22
	Forfeited	0			0
	Non-vested at end of year	999,050		$	2.90
	The total fair value of RSAs and RSUs vested under the Stock Plans for the year ended December 31, 2013 is $871,417.
	Non-Plan RSUs
	RSUs granted outside the Stock Plans represent awards issued as payment for services to consultants.  The shares underlying these non-plan RSUs are unregistered.
		Non-vested Shares
		Shares		Weighted-Average Grant-Date Fair Value
	Non-vested at beginning of year	480,000		$	0.99
	Granted	900,000			3.90
	Vested	-496,666			1.09
	Forfeited	0			0
	Non-vested at end of year	883,334		$	3.90
	Non-plan RSUs include 150,000 RSUs granted to consultants in November 2013 that vest over a six month period beginning December 31, 2013.  Non-plan RSUs also include 750,000 RSUs granted in November 2013 to these same consultants as performance incentives.  These RSUs vest only upon achievement of certain market conditions, as measured based on the closing price of our common stock during a period ending on the earlier of (i) December 31, 2015 or (ii) thirty days following termination of the related consulting agreement.  Upon thirty days’ notice, the consulting agreements may be terminated and any unvested portion of the RSUs will be cancelled.
	Compensation cost related to the vesting of non-plan RSUs was approximately $1,912,000, $960,000, and $29,000 for the periods ended December 31, 2013, 2012, and 2011 respectively, and is included in general and administrative expense in the table of share-based compensation expense shown above.
	Stock Options and Warrants
	Stock options are issued as incentive compensation to executives, employees, and non-employee directors as well as payment for services to consultants.  In addition, we have granted warrants to investors in connection with securities offerings (see Note 9).  Stock options and warrants are generally granted with exercise prices at or above fair market value of the underlying shares at the date of grant.
	Plan-Based Options
	Options for employees, including executives and non-employee directors, are generally granted under the Stock Plans.  The following table presents a summary of option activity under the Stock Plans for the year ended December 31, 2013:
		Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Term			Aggregate Intrinsic Value ($)
	Outstanding at beginning of year	7,514,697		$	3.26
	Granted	258,780			3.32
	Exercised	-217,181			1.21
	Forfeited	0			0
	Expired	-627,086			8.36
	Outstanding at end of year	6,929,210			2.87		4.40	years		$	15,433,876
	Exercisable at end of year	4,780,057		$	3.24		3.98	years		$	10,042,794
	The weighted average fair value of option shares granted during the years ended December 31, 2013, 2012, and 2011 was $2.53, $2.65, and $0.66, respectively.  The total fair value of option shares vested during the years ended December 31, 2013, 2012, and 2011, was $3,285,859, $1,404,456, and $192,959, respectively.
	The fair value of options granted under the Stock Plans is estimated using the Black-Scholes option pricing model.  Generally, fair value is determined as of the grant date.  In the case of option grants to third parties, the fair value is estimated at each interim reporting date until vested.
	The fair value of option grants under the Stock Plans for the years ended December 31, 2013, 2012, and 2011 respectively, was estimated using the Black-Scholes option-pricing model with the following assumptions:
		Year ended December 31,
		2013		2012		2011
	Expected option term 1	5 to 6 years		6 to 7 years		5 to 6 years
	Expected volatility factor 2	97.9% to 103.7%		90.2% to 94.8%		92.0% to 97.7%
	Risk-free interest rate 3	0.8% to 1.8%		0.8% to 1.0%		0.9% to 2.0%
	Expected annual dividend yield	0%		0%		0%
	1 The expected term was generally determined based on historical activity for grants with similar terms and for similar groups of employees and represents the period of time that options are expected to be outstanding.  For employee options, groups of employees with similar historical exercise behavior are considered separately for valuation purposes.   For consultants, the expected term was determined based on the contractual life of the award.
2 The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected option life of the grant.
3 The risk-free interest rate for periods equal to the expected term of the share option is based on the U.S. Treasury yield curve in effect at the measurement date.
The aggregate intrinsic value of plan-based options exercised during 2013, 2012, and 2011 was $648,433,  $62,945, and $0, respectively.
Non-Plan Options and Warrants
Options and warrants granted outside the Stock Plans represent options issued as payment for services to consultants and warrants issued in connection with offerings of securities.  As of December 31, 2013, all outstanding non-plan options and warrants have been registered by us on a registration statement.  The following table presents a summary of non-plan option and warrant activity for the year ended December 31, 2013:
	Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Term			Aggregate Intrinsic Value ($)
Outstanding at beginning of year	2,967,911		$	0.87
Granted	0			0
Exercised	-1,008,394			0.99
Forfeited	0			0
Expired	0			0
Outstanding at end of year	1,959,517			0.81		1.96	years		$	7,336,710
Exercisable at end of year	1,959,517		$	0.81		1.96	years		$	7,336,710
The aggregate fair value of non-plan options and warrants vested during the years ended December 31, 2013, 2012, and 2011 was $129,192, $166,668, and $470,383, respectively.
Non-plan options and warrants outstanding at December 31, 2013 and 2012 include warrants issued in connection with the sale of equity securities in various public and private placement transactions from 2009 to 2011 that represent 1,849,517 and 2,607,911 shares respectively (see Note 9).  The estimated fair value of these warrants as of December 31, 2013 and 2012 are included in shareholders’ equity in the accompanying balance sheets.
The fair value of non-plan options and warrants for the years ended December 31, 2013, 2012, and 2011, respectively, was estimated using the Black-Scholes option-pricing model at each measurement date with the following assumptions:
	Year ended December 31,
	2013		2012		2011
Expected option term 1	4 to 5 years		4 to 6 years		4 to 5 years
Expected volatility factor 2	91.5% to 104%		93.4% to 104.3%		89.4% to 100.2%
Risk-free interest rate 3	0.5% to 1.0%		0.7% to 1.0%		0.9% to 2.4%
Expected annual dividend yield	0%		0%		0%
1 The expected term was determined based on the remaining contractual life of the award on the measurement date.
2 The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected life of the award.
3 The risk-free interest rate for periods equal to the expected term of the award is based on the U.S. Treasury yield curve in effect at the measurement date.
The aggregate intrinsic value of non-plan options and warrants exercised during 2013, 2012, and 2011 was $3,038,635, $3,831,971 and $232,269 respectively.
Options and Warrants by Price Range
The options and warrants outstanding at December 31, 2013 under all plans, including the non-plan options and warrants, have exercise price ranges, weighted average contractual lives, and weighted average exercise prices are as follows:
		Options and Warrants Outstanding							Options and Warrants Exercisable
Range of Exercise Prices		Number Outstanding at December 31,  2013		Wtd. Avg. Exercise Price			Wtd. Avg. Remaining Contractual Life		Number Exercisable at December 31, 2013		Wtd. Avg. Exercise Price		Wtd. Avg. Remaining Contractual Life
$0.54 - $0.88		1,960,208		$	0.59		2.29		1,925,030		$	0.59	2.25
$0.89 - $1.88		2,708,742		$	1.00		4.54		1,771,182		$	1.01	4.35
$2.01 - $3.13		3,019,371		$	2.81		5.21		1,972,987		$	2.84	5.00
$3.15 - $5.40		404,655		$	4.30		2.98		274,624		$	4.35	1.14
$5.70 - $8.60		337,470		$	6.74		1.10		337,470		$	6.74	1.10
$9.06 - $26.75		458,281		$	11.08		0.58		458,281		$	11.08	0.58
		8,888,727		$	2.41		3.87		6,739,574		$	2.53	3.39
Upon exercise of options and warrants under all plans, we issue new shares of our common stock.   For shares issued upon exercise of warrants or equity awards granted under the Stock Plans, the shares of common stock are registered.   For shares issued upon exercise of non-plan RSU or option awards, the shares are not registered unless they have been subsequently registered by us on a registration statement.  Cash received from option and warrant exercises for the years ended December 31, 2013, 2012, and 2011, was $1,147,380, $1,381,694, and $330,938, respectively.  No tax benefit was realized for the tax deductions from exercise of the share-based payment arrangements for the years ended December 31, 2013, 2012, and 2011 as the benefits were fully offset by a valuation allowance (see Note 7).

Stock_Authorization_And_Issuan

Stock Authorization And Issuance	12 Months Ended
	Dec. 31, 2013
Stock Authorization And Issuance [Abstract]	'
Stock Authorization And Issuance	'
	9.  STOCK AUTHORIZATION AND ISSUANCE
	Preferred Stock
	We have 15,000,000 shares of preferred stock authorized for issuance at the direction of the board of directors.  As of December 31, 2013, we had no outstanding preferred stock.
	On November 17, 2005, our board of directors designated 100,000 shares of authorized preferred stock as the Series E Preferred Stock in conjunction with its adoption of a Shareholder Protection Rights Agreement (Note 10).
	Common Stock and Warrants
	On October 4, 2012, we amended our Articles of Incorporation to increase the number of authorized shares of our common stock from 100,000,000 shares to 150,000,000 shares, as approved by a majority vote of our shareholders on October 2, 2012.
	We have filed several shelf registration statements (“Shelf”) with the SEC for purposes of providing flexibility to raise funds from the offering of various securities over a period of three years, subject to market conditions.   Securities offered under the shelf registration statements were used to fund working capital, capital expenditures, vendor purchases, and other capital needs.  Offerings made under a Shelf during 2013, 2012, and 2011 are included in the table below.  As of March 31, 2013, there were no securities available under any Shelf.
	On March 13, 2014, we completed the sale of an aggregate of 2,666,666 shares of our common stock, at a price of $4.50 per share, to two accredited investors in a private placement transaction pursuant to Rule 506 of Regulation D under the Securities Act of 1933, as amended.   The offering represented 2.8% of our outstanding common stock on an after-issued basis.   The aggregate net proceeds from this offering, after deduction of estimated offering costs are approximately $11.9 million.  We are obligated to file a registration statement within thirty (30) days of the closing date to register the resale of the common stock issued in the private placement transaction.  In the event that we fail to file the registration statement within the required time frame, or the registration statement ceases to be effective for any continuous period that exceeds 10 consecutive calendar days or more than an aggregate of fifteen calendar days during any 12-month period or any time during the six-month anniversary of the registration date (a “Registration Default”), we shall pay the investors an amount in cash equal to 1% of the aggregate purchase price paid for each 30-day period of a Registration Default.   The maximum penalty that we may incur under this arrangement is 6% of the aggregate purchase price, or $720,000 subject to reduction for shares sold or transferred and not held at the penalty determination date.
	We filed a registration statement on August 21, 2013 to register the resale of the common stock issued in the August 6, 2013 offering described below.  The registration statement became effective on September 18, 2013 (File No. 333-190769).  In the event the registration statement ceases to be effective for any continuous period that exceeds 10 consecutive calendar days or more than an aggregate of fifteen calendar days during any 12-month period or any time during the six-month anniversary of the registration date (a “Registration Default”), we shall pay the investors an amount in cash equal to 1% of the aggregate purchase price paid for each 30-day period of a Registration Default.   The maximum penalty that we may incur under this arrangement is 6% of the aggregate purchase price, or $839,399 subject to reduction for shares sold or transferred and not held at the penalty determination date.  We do not believe that payment under the registration payment arrangement is probable and therefore no related liability has been recorded in the accompanying financial statements.
	The following table presents a summary of equity offerings for the years ended December 31, 2013, 2012, and 2011 (in thousands, except for per share amounts)
	Date	Transaction	# of Common Shares/ Units Sold (in 000’s)	Price per Share/Unit	# of Warrants Issued (in 000’s)	Exercise Price per Warrant	Net Proceeds  (in 000’s) (1)	Offering as % of Out-standing Common Stock (2)
	6-Aug-13	Offering to a limited number of institutional and other investors	3,681	$3.80	n/a	n/a	$13,000	4.00%
	26-Mar-13	Shelf underwritten offering (4)	4,715	$3.25	n/a	n/a	$14,300	5.40%
	19-Sep-12	Shelf offering to a limited number of institutional and other investors	4,382	$2.30	n/a	n/a	$9,200	5.30%
	18-Apr-12	Shelf offering to a limited number of institutional and other investors	8,139	$1.05	n/a	n/a	$8,300	10.70%
	14-Sep-11	Shelf offering to two institutional investors	7,800	$0.88	n/a	n/a	$6,500	11.60%
	30-Mar-11	Shelf offering to a limited number of institutional and other investors (3)	3,332	$0.71	n/a	n/a	$4,100	10.20%
			2,691	$0.81	807	$0.88
		-1	After deduction of applicable underwriters’ discounts, placement agent fees, and other offering costs.
		-2	Calculated on an after-issued basis.
		-3	Offering included the sale of 3,332,117 shares of common stock at $0.71 per share and 2,691,360 units, each consisting of one share of common stock and three-tenths of a warrant to purchase common stock, at $0.81 per unit.  The warrants are exercisable beginning September 30, 2011 and expire on September 30, 2016.  The warrants were recorded at their relative fair value of approximately $0.4 million as estimated at their grant date using the Black-Scholes option pricing model (see Note 8)
		-4	Ladenburg Thalmann Financial Services Inc. acted as underwriter for the transaction.

Shareholder_Protection_Rights_

Shareholder Protection Rights Agreement	12 Months Ended
	Dec. 31, 2013
Shareholder Protection Rights Agreement [Abstract]	'
Shareholder Protection Rights Agreement	'
	10.  SHAREHOLDER PROTECTION RIGHTS AGREEMENT
	On November 21, 2005, we adopted a Shareholder Protection Rights Agreement (“Rights Agreement”) which calls for the issuance, on November 29, 2005, as a dividend, rights to acquire fractional shares of Series E Preferred Stock.  We did not assign any value to the dividend as the value of these rights is not believed to be objectively determinable.  The principal objective of the Rights Agreement is to cause someone interested in acquiring us to negotiate with our Board of Directors rather than launch an unsolicited or hostile bid.  The Rights Agreement subjects a potential acquirer to substantial voting and economic dilution.  Each share of Common Stock issued by ParkerVision will include an attached right.
	The rights initially are not exercisable and trade with the Common Stock of ParkerVision.  In the future, the rights may become exchangeable for shares of Series E Preferred Stock with various provisions that may discourage a takeover bid.  Additionally, the rights have what are known as “flip-in” and “flip-over” provisions that could make any acquisition of us more costly to the potential acquirer.  The rights may separate from the Common Stock following the acquisition of 15% or more of the outstanding shares of Common Stock by an acquiring person.  Upon separation, the holder of the rights may exercise their right at an exercise price of $45 per right (the “Exercise Price”), subject to adjustment and payable in cash.
	Upon payment of the exercise price, the holder of the right will receive from us that number of shares of Common Stock having an aggregate market price equal to twice the Exercise Price, as adjusted.   The Rights Agreement also has a flip over provision allowing the holder to purchase that number of shares of common/voting equity of a successor entity, if we are not the surviving corporation in a business combination, at an aggregate market price equal to twice the Exercise Price.
	We have the right to substitute for any of our shares of Common Stock that we are obligated to issue, shares of Series E Preferred Stock at a ratio of one ten-thousandth of a share of Series E Preferred Stock for each share of Common Stock.  The Series E Preferred Stock, if and when issued, will have quarterly cumulative dividend rights payable when and as declared by the board of directors, liquidation, dissolution and winding up preferences, voting rights and will rank junior to other securities of ParkerVision unless otherwise determined by the board of directors.
	The rights may be redeemed upon approval of the board of directors at a redemption price of $0.01.  The Rights Agreement expires on November 21, 2015.

Commitments_And_Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Commitments And Contingencies	'
	11. COMMITMENTS AND CONTINGENCIES
	Lease Commitments
	Our headquarters facility in Jacksonville, Florida is leased pursuant to a non-cancelable lease agreement effective June 1, 2006.   The lease term, as amended in October 2011, provides for a straight-lined monthly rental payment of approximately $23,000 through October 31, 2014 with an option for renewal.
	We also lease office space in Lake Mary, Florida for our wireless design center.  The lease term, as amended in December 2013 provides for a straight-lined monthly rental payment of approximately $18,900 through May 2017 with an option for renewal.    Deferred rent is amortized as a reduction to rent expense over the respective lease term.
	In addition to sales tax payable on base rental amounts, certain leases obligate us to pay pro-rated annual operating expenses for the properties.  Rent expense for properties, for the years ended December 31, 2013, 2012, and 2011, was $476,782,  $515,437,  and $408,070, respectively.
	In addition, we lease certain equipment, primarily for research and development activities, under non-cancelable operating leases with lease terms of less than one year.  Equipment rental expense for the years ended December 31, 2013, 2012, and 2011 was $235,370, $232,659, and $188,713,  respectively.
	Contractual Obligations
	Future minimum lease payments under all non-cancelable operating leases and capital leases that have initial or remaining terms in excess of one year as of December 31, 2013 were as follows:
	Contractual obligations:	2014		2015			2016		2017	Total
	Operating leases	$	362,200		248,900	$	248,900	$	106,800	$	966,800
	Capital leases	$	30,000	$	7,500	$	0	$	0	$	37,500
	Legal Proceedings
	From time to time, we are subject to legal proceedings and claims which arise in the ordinary course of our business.  We believe, based upon advice from outside legal counsel, that the final disposition of such matters will not have a material adverse effect on our financial position, results of operations or liquidity.
	ParkerVision vs. Qualcomm, Inc.
	In October 2013, a jury in the United States District Court of the Middle District of Florida awarded us $172.7 million in damages for direct and indirect infringement of eleven claims of four of our patents by Qualcomm Incorporated (“Qualcomm”).  The jury also found that all eleven claims of the four patents were valid.  The jury found that we did not prove our claims of willfulness, which would have allowed the judge to enhance the jury-awarded damages.   There are a number of outstanding motions in this case including our motions for an injunction and/or, in the alternative, ongoing royalties for Qualcomm’s continued unauthorized use of our patented technology and our motion for pre and post-judgment interest.  Qualcomm also has outstanding motions requesting the judge to overturn the jury’s decisions regarding infringement, invalidity and damages and their request for a new trial.  A hearing will be held on May 1, 2014 for the parties to present arguments regarding these outstanding motions.   The court will then rule on these outstanding motions although we do not know at this time when that ruling will occur.  The amount and timing of the collection of damages from Qualcomm is dependent upon final disposition of the litigation which may include settlement discussions and/or appeals.  Following a final district court adjudication, either party has 30 days to appeal the ruling to the federal appellate court.  Qualcomm has indicated that it plans to appeal the district court decision.
	We first filed a complaint against Qualcomm on July 20, 2011, as amended on February 28, 2012, seeking unspecified damages and injunctive relief for infringement of six of our patents related to radio-frequency receivers and the down-conversion of electromagnetic signals (the “Complaint”).  Qualcomm filed an Answer and Counterclaim to our Complaint (the “Counterclaim”) in which Qualcomm denied infringement and alleged invalidity and unenforceability of each of our patents, including claims of patent unenforceability due to alleged inequitable conduct.  Qualcomm also named our long-time patent prosecution counsel, Sterne, Kessler, Goldstein & Fox PLLC (“SKGF”) as a co-defendant in its Counterclaim and further alleged that we aided and abetted SKGF in its alleged breach of fiduciary duty to Qualcomm and tortiously interfered with Qualcomm’s contractual relationship with SKGF.
	In November 2011, as amended in April 2012, we filed a motion to dismiss Qualcomm’s Counterclaims related to inequitable conduct, aiding and abetting, and tortious interference, and a motion to strike certain of Qualcomm’s affirmative defenses.  SKGF also filed a motion to dismiss Qualcomm’s claims against them.  In November 2012, the court granted SKGF’s motion and dismissed these claims without prejudice; and furthermore, the court abated Qualcomm’s Counterclaims against SKGF such that Qualcomm was unable to file an amended Counterclaim against SKGF until such time that the court lifted the abatement.  In January 2013, the court also dismissed without prejudice and abated the aiding and abetting and tortious interference claims against us.  In February 2014, Qualcomm dismissed these counterclaims against us and SKGF.
	In January 2013, the court also dismissed with prejudice two of the three theories Qualcomm asserted in support of its claims of inequitable conduct.  Furthermore, Qualcomm’s affirmative defenses of inequitable conduct and unclean hands were stricken by the court.  In April 2013, Qualcomm filed an amended Counterclaim which dropped the remaining claims against us that related to inequitable conduct.
	Maxtak Capital Advisors LLC vs. ParkerVision
	On December 28, 2011, Maxtak Capital Advisors LLC, Maxtak Partners LP and David Greenbaum (the “Plaintiffs”) filed a complaint in the United States District Court of New Jersey against us, our chief executive officer, Jeffrey Parker and one of our directors, Robert Sterne, alleging common law fraud and negligent misrepresentation of material facts concerning the effectiveness of our technology and our success in securing customers.  The Plaintiffs are seeking unspecified damages, including attorneys’ fees and costs.  In October 2012, the court granted our motion to transfer the case to the Middle District of Florida.  In May 2013, the court denied our motion to dismiss.  Discovery is ongoing in this case with a discovery cut-off date of July 1, 2014 and a trial date commencing February 2, 2015.  We believe this matter is without merit, and we do not believe it is probable that this case will have a material adverse effect on our financial position, results of operations or liquidity.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transaction	'
	12. RELATED-PARTY TRANSACTIONS
	We paid approximately $587,000, $906,000, and $784,000, in 2013, 2012, and 2011, respectively, for patent-related legal services to a law firm, of which Robert Sterne, one of our directors since September 2006, is a partner.
	On September 19, 2012 we sold 300,000 shares of our common stock to entities controlled by Messrs. Austin W. Marxe and David M. Greenhouse (“Marxe and Greenhouse Entities”) at a price of $2.30 per share in an offering off our September 2012 Shelf.  On April 18, 2012 we sold 2,857,143 shares of our common stock to Marxe and Greenhouse Entities at a price of $1.05 per share in an offering off our September 2009 Shelf.  Messrs. Marxe and Greenhouse are considered related parties under the rules of NASDAQ as they were beneficial owners of more than 5% of our outstanding stock at the time of the transactions.
	On September 14, 2011, we sold 500,000 shares of our common stock to Wellington Management Company, LLP (“Wellington”) at a price of $0.88 per share in an offering off our September 2009 Shelf.  On March 30, 2011 we sold 1,200,000 shares of our common stock to Wellington at a price of $0.71 per share in an offering off our September 2009 Shelf.  On November 19, 2010, we sold 2,829,520 shares of our common stock to Wellington at a price of $0.42 per share in an offering off our January 2009 Shelf.  Wellington was considered a related party under the rules of NASDAQ as it was a beneficial owner of more than 5% of our outstanding stock at the time of the transactions.

Concentrations_Of_Credit_Risk

Concentrations Of Credit Risk	12 Months Ended
	Dec. 31, 2013
Risks and Uncertainties [Abstract]	'
Concentration Of Credit Risk	'
	13.  CONCENTRATIONS OF CREDIT RISK
	Financial instruments that potentially subject us to a concentration of credit risk principally consist of cash and cash equivalents and our available for sale securities.  Cash and cash equivalents are primarily held in bank accounts and overnight investments.  At times our cash balances on deposit with banks may exceed the balance insured by the F.D.I.C.
	Our available for sale securities are held in accounts with brokerage institutions and consist of mutual funds invested primarily in short-term municipal securities.   We maintain our investments with what management believes to be quality financial institutions and while we limit the amount of credit exposure to any one institution, we could be subject to credit risks from concentration of investments in a single fund as well as credit risks arising from adverse conditions in the financial markets as a whole.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	14. FAIR VALUE MEASUREMENTS
	We have determined the estimated fair value amounts of our financial instruments using available market information.  Our assets that are measured at fair value on a recurring basis included in our balance sheet at December 31, 2013 and 2012 are:
				Fair Value Measurements
		Total		Quoted Prices in Active Markets  (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2013:
	Available for sale securities:
	Municipal bond
	mutual funds	$	16,957,489	$	16,957,489	$	0	$	0
	December 31, 2012:
	Available for sale securities:
	Municipal bond
	mutual funds	$	8,041,904	$	8,041,904	$	0	$	0

Quarterly_Financial_Data

Quarterly Financial Data	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Quaterly Financial Data	'
	15.  QUARTERLY FINANCIAL DATA (UNAUDITED)
	The quarterly financial data presented below is in thousands except for per share data:
		For the three months ended
		31-Mar-13		30-Jun-13		30-Sep-13		31-Dec-13
	Revenues	$	0	$	0	$	0	$	0
	Gross margin		0		0		0		0
	Net loss		-6,462		-7,127		-6,424		-7,859
	Basic and diluted net loss per common share	$	-0.08	$	-0.08	$	-0.07	$	-0.08
		For the three months ended
		31-Mar-12		30-Jun-12		30-Sep-12		31-Dec-12
	Revenues	$	0	$	0	$	0	$	0
	Gross margin		0		0		0		0
	Net loss		-4,068		-5,061		-5,019		-6,174
	Basic and diluted net loss per common share	$	-0.06	$	-0.07	$	-0.06	$	-0.07

Schedule_II_Valuation_And_Qual

Schedule II - Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]	'
Schedule II Valuation And Qualifying Accounts	'
	SCHEDULE II
	PARKERVISION, INC. AND SUBSIDIARY
	VALUATION AND QUALIFYING ACCOUNTS
	12
	Valuation Allowance for Income Taxes	Balance at Beginning of Period
					Balance at End of Period
			Provision	Write-Offs
	Year ended December 31, 2011	$	5,722,492	-1,934,149	92,592,971
		88,804,628
	Year ended December 31, 2012	92,592,971	7,640,454	-2,226,498	98,006,927
	Year ended December 31, 2013	98,006,927	10,648,966	-706,055	107,949,839

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	Our financial statements are prepared in accordance with generally accepted accounting principles.
Use of Estimates in the Preparation of Financial Statements	'
	Use of Estimates in the Preparation of Financial Statements
	The preparation of financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods.  The more significant estimates made by us include the volatility, forfeiture rate and estimated lives of share-based awards used in the estimate of the fair market value of share-based compensation, the assessment of recoverability of long-lived assets, the amortization periods for intangible and long-lived assets, and the valuation allowance for deferred taxes.   Actual results could differ from the estimates made.  We periodically evaluate estimates used in the preparation of the financial statements for continued reasonableness.  Appropriate adjustments, if any, to the estimates used are made prospectively based upon such periodic evaluation.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	We consider cash and cash equivalents to include cash on hand, interest-bearing deposits, overnight repurchase agreements and investments with original maturities of three months or less when purchased.
Available for Sale Securities	'
	Available for Sale Securities
	Available for sale securities are intended to be held for indefinite periods of time and are not intended to be held to maturity. These securities are recorded at fair value and any unrealized holding gains and losses, net of the related tax effect, are excluded from earnings and are reported as a separate component of accumulated other comprehensive loss until realized. Our available for sale securities at December 31, 2013 and 2012 consisted of mutual funds that invest primarily in short-term municipal securities with an average effective maturity of one year or less. All dividends and realized gains are recognized as other income as earned and immediately reinvested.  The Company has determined that the fair value of its available for sale securities fall within Level 1 in the fair value hierarchy (See Note 14).
Property and Equipment	'
	Property and Equipment
	Property and equipment are stated at cost, less accumulated depreciation. Depreciation is determined using the straight-line method over the following estimated useful lives:
	Manufacturing and office equipment	5-7 years
	Leasehold improvements	Remaining life of lease
	Furniture and fixtures	7 years
	Computer equipment and software	3-5 years
	The cost and accumulated depreciation of assets sold or retired are removed from their respective accounts, and any resulting net gain or loss is recognized in the accompanying statements of comprehensive loss.  The carrying value of long-lived assets is reviewed on a regular basis for the existence of facts, both internally and externally, that may suggest impairment. Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset.  If the carrying amount of the assets exceeds its estimated undiscounted future net cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the assets.
	Long-lived assets to be sold are classified as held for sale in the period in which there is an approved plan for sale of the assets within one year, and it is unlikely that the plan will be withdrawn or changed.  Long-lived assets held for sale are recorded at the lower of their carrying amount or fair value less estimated costs to sell.
Intangible Assets	'
	Intangible Assets
	Patents, copyrights and other intangible assets are amortized using the straight-line method over their estimated period of benefit.  We estimate the economic lives of our patents and copyrights to be fifteen to twenty years.  We estimate the economic lives of other intangible assets, including licenses, based on estimated technological obsolescence, to be two to five years, which is generally shorter than the contractual lives.   Management evaluates the recoverability of intangible assets periodically and takes into account events or circumstances that may warrant revised estimates of useful lives or that may indicate impairment exists.
Key-man Life Insurance	'
	Key-man Life Insurance
	In 2012 and 2011, we paid the premiums on certain whole-life policies, in the amount of approximately $29,000 and $46,000, respectively, through the use of annual policy dividends and loans against the policies.   These policies were surrendered in favor of term-life policies in 2012 and 2013. (See Note 4).
Accounting for Share-Based Compensation	'
	Accounting for Share-Based Compensation
	We have various share-based compensation programs which provide for equity awards including stock options, restricted stock units (“RSUs”) and restricted stock awards (“RSAs”). We calculate the fair value of employee share-based equity awards on the date of grant and recognize the calculated fair value, net of estimated forfeitures, as compensation expense over the requisite service periods of the related awards.  We estimate the fair value of each equity award using the Black-Scholes option valuation model or the Monte Carlo simulation fair value model for awards that contain market conditions.  These valuation models require the use of highly subjective assumptions and estimates including (i) how long employees will retain their stock options before exercising them, (ii) the volatility of our common stock price over the expected life of the equity award, and (iii) the rate at which equity awards will ultimately be forfeited by the recipients.  Such estimates, and the basis for our conclusions regarding such estimates, are outlined in detail in Note 8.  Estimates of fair value are not intended to predict actual future events or the value ultimately realized by persons who receive equity awards.
Revenue Recognition	'
	Revenue Recognition
	We did not recognize any product or royalty revenue in 2013, 2012, or 2011.   We recognize revenue when there is persuasive evidence of an arrangement, the amounts are fixed and determinable, and the collectability of the resulting receivable is reasonably assured.
Research and Development Expenses	'
	Research and Development Expenses
	Research and development costs are expensed as incurred and include salaries and benefits, costs paid to third party contractors, prototype expenses, maintenance costs for software development tools, depreciation, amortization, and an allocated portion of facilities costs.
Loss per Common Share	'
	Loss per Common Share
	Basic loss per common share is determined based on the weighted-average number of common shares outstanding during each year.  Diluted loss per common share is the same as basic loss per common share as all potential common shares are excluded from the calculation, as their effect is anti-dilutive.  The weighted-average number of common shares outstanding for the years ended December 31, 2013, 2012, and 2011, was 88,968,043,  75,999,278,  and 60,038,857, respectively.
	Options and warrants to purchase 8,888,727,  10,482,608,  and 11,105,288, shares of common stock were outstanding at December 31, 2013, 2012, and 2011, respectively.   In addition, unvested RSUs representing 1,882,384,  1,433,842,  and 1,104,377 shares of common stock were outstanding at December 31, 2013, 2012, and 2011, respectively.  These options, warrants and RSUs were excluded from the computation of diluted loss per share as their effect would have been anti-dilutive.
Leases	'
	Leases
	Our facilities are leased under operating leases.  For those leases that contain rent escalations or rent concessions, we record the total rent payable during the lease term on a straight-line basis over the term of the lease with the difference between the rents paid and the straight-line rent recorded as a deferred rent liability in the accompanying balance sheets.
Income Taxes	'
	Income Taxes
	The provision for income taxes is based on loss before taxes as reported in the accompanying statements of comprehensive loss.  Deferred tax assets and liabilities are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax assets and liabilities are determined based on differences between the financial statement carrying amounts and the tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse.  Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not that the benefit of such assets will not be realized.  Our deferred tax assets exclude unrecognized tax benefits which do not meet a more-likely-than-not threshold for financial statement recognition for tax positions taken or expected to be taken in a tax return.
	We utilize the short-cut method for establishing the historical pool of windfall tax benefits related to employee share-based compensation. We do not recognize deferred tax assets with regard to the excess of tax over book stock compensation until the tax deductions actually reduce current taxes payable at which time the tax benefit would be recorded as an increase in additional paid-in-capital.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2013, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) No. 2013-11, “Presentation of an unrecognized tax benefit when a net operating loss (“NOL”) carry-forward, a similar tax loss, or tax credit carry-forward exists.” ASU 2013-11 requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a NOL carry-forward, a similar tax loss, or a tax credit carry-forward when settlement in this manner is available under the tax law. This guidance is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of ASU 2013-11 is not expected to have an impact on our financial statements.

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Schedule of Useful Lives	'
	Manufacturing and office equipment	5-7 years
	Leasehold improvements	Remaining life of lease
	Furniture and fixtures	7 years
	Computer equipment and software	3-5 years

Prepaid_Expenses_And_Other_Tab

Prepaid Expenses And Other (Tables)	12 Months Ended
	Dec. 31, 2013
Prepaid Expenses And Other [Abstract]	'
Schedule Of Prepaid Expenses and Other Current Assets	'
			2013		2012
	Prepaid insurance	$	409,790	$	401,373
	Cash surrender value of life insurance		0		456,452
	Other current assets		142,171		119,485
		$	551,961	$	977,310

Property_And_Equipment_Net_Tab

Property And Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2013
Property And Equipment, Net [Abstract]	'
Schedule Of Property And Equipment	'
		2013		2012
	Equipment and software	$	8,158,454	$	8,082,091
	Leasehold improvements		837,377		837,377
	Furniture and fixtures		502,397		505,428
			9,498,228		9,424,896
	Less accumulated depreciation and amortization		-9,190,843		-9,021,450
		$	307,385	$	403,446

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Intangible Assets [Abstract]	'
Schedule Of Intangible Assets	'
		2013
		Gross Carrying Amount			Accumulated Amortization			Net Value
	Patents and copyrights	$	18,943,020		$	10,397,136		$	8,545,884
	Prepaid licensing fees		574,000			567,452			6,548
		$	19,517,020		$	10,964,588		$	8,552,432
		2012
		Gross Carrying Amount			Accumulated Amortization			Net Value
	Patents and copyrights	$	18,290,991		$	9,329,438		$	8,961,553
	Prepaid licensing fees		574,000			557,452			16,548
		$	18,864,991		$	9,886,890		$	8,978,101
Schedule of Amortization Expense	'
				Amortization Expense
		Weighted average estimated life (in years)
				2013			2012			2011
	Patents and copyrights	17		$	1,067,698		$	1,049,446		$	1,013,681
	Prepaid licensing fees	2			10,000			3,452			0
	Total amortization			$	1,077,698		$	1,052,898		$	1,013,681
Schedule Of Expected Amortization Expense	'
	2014	$	1,054,955
	2015		953,970
	2016		917,996
	2017		915,396
	2018		859,572
	2019 and thereafter		3,850,543
	Total	$	8,552,432

Income_Taxes_And_Tax_Status_Ta

Income Taxes And Tax Status (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes And Tax Status [Abstract]	'
Schedule Of Effective Income Tax Rate Reconciliation	'
		2013		2012		2011
	Tax benefit at statutory rate	$	-9,476,580		-6,909,416		-4,954,940
	State tax benefit		-975,530		-711,263		-510,067
	Increase in valuation allowance		10,648,966		7,640,454		5,722,492
	Research and development credit		-299,044		-239,216		-272,117
	Capital loss		0		0		-38,439
	Other		102,188		219,441		53,071
		$	0	$	0	$	0
Schedule Of Deferred Tax Assets And Liabilities	'
		2013		2012
	Gross deferred tax assets:
	Net operating loss carry-forward	$	94,742,725	$	85,844,921
	Research and development credit		7,618,821		7,319,776
	Stock compensation		3,548,655		2,882,576
	Patents and other		1,828,103		1,770,367
	Fixed assets		121,179		125,737
	Accrued liabilities		80,204		64,507
	Capital loss carry-forward		5,652		38,439
	Charitable Contributions		4,500		0
			107,949,839		98,046,323
	Less valuation allowance		-107,949,839		-98,006,927
			0		39,396
	Gross deferred tax liabilities:
	Gains on the cash surrender value of life insurance		0		39,396
			0		39,396
	Net deferred tax asset	$	0	$	0
Schedule Of Unrecognized Tax Benefits Roll Forward	'
		For the years ended December 31,
		2013		2012		2011
	Unrecognized tax benefits – beginning of year	$	1,369,614		1,369,614		1,369,614
	Gross increases – tax positions in prior period		0		0		0
	Change in Estimate		0		0		0
	Unrecognized tax benefits – end of year	$	1,369,614		1,369,614		1,369,614

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Schedule Of Share-Based Compensation Expense Included In Statements Of Operations	'
		Year ended December 31,
		2013			2012			2011
	Research and development expense	$	1,594,603		$	765,126		$	706,734
	Sales and marketing expense		327,199			207,125			121,384
	General and administrative expense		5,009,636			2,581,163			609,056
	Total share-based expense	$	6,931,438		$	3,553,414		$	1,437,174
Summary Of Options And Warrants By Exercise Price Range	'
			Options and Warrants Outstanding							Options and Warrants Exercisable
	Range of Exercise Prices		Number Outstanding at December 31,  2013		Wtd. Avg. Exercise Price			Wtd. Avg. Remaining Contractual Life		Number Exercisable at December 31, 2013		Wtd. Avg. Exercise Price		Wtd. Avg. Remaining Contractual Life
	$0.54 - $0.88		1,960,208		$	0.59		2.29		1,925,030		$	0.59	2.25
	$0.89 - $1.88		2,708,742		$	1.00		4.54		1,771,182		$	1.01	4.35
	$2.01 - $3.13		3,019,371		$	2.81		5.21		1,972,987		$	2.84	5.00
	$3.15 - $5.40		404,655		$	4.30		2.98		274,624		$	4.35	1.14
	$5.70 - $8.60		337,470		$	6.74		1.10		337,470		$	6.74	1.10
	$9.06 - $26.75		458,281		$	11.08		0.58		458,281		$	11.08	0.58
			8,888,727		$	2.41		3.87		6,739,574		$	2.53	3.39
Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Summary Of Options Activity	'
		Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Term			Aggregate Intrinsic Value ($)
	Outstanding at beginning of year	7,514,697		$	3.26
	Granted	258,780			3.32
	Exercised	-217,181			1.21
	Forfeited	0			0
	Expired	-627,086			8.36
	Outstanding at end of year	6,929,210			2.87		4.40	years		$	15,433,876
	Exercisable at end of year	4,780,057		$	3.24		3.98	years		$	10,042,794
Summary Of Valuation Assumptions	'
		Year ended December 31,
		2013		2012		2011
	Expected option term 1	5 to 6 years		6 to 7 years		5 to 6 years
	Expected volatility factor 2	97.9% to 103.7%		90.2% to 94.8%		92.0% to 97.7%
	Risk-free interest rate 3	0.8% to 1.8%		0.8% to 1.0%		0.9% to 2.0%
	Expected annual dividend yield	0%		0%		0%
	1 The expected term was generally determined based on historical activity for grants with similar terms and for similar groups of employees and represents the period of time that options are expected to be outstanding.  For employee options, groups of employees with similar historical exercise behavior are considered separately for valuation purposes.   For consultants, the expected term was determined based on the contractual life of the award.
	2 The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected option life of the grant.
	3 The risk-free interest rate for periods equal to the expected term of the share option is based on the U.S. Treasury yield curve in effect at the measurement date.
Restricted Stock Units (RSUs) [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Summary Of Restricted Stock Activity	'
		Non-vested Shares
		Shares		Weighted-Average Grant-Date Fair Value
	Non-vested at beginning of year	480,000		$	0.99
	Granted	900,000			3.90
	Vested	-496,666			1.09
	Forfeited	0			0
	Non-vested at end of year	883,334		$	3.90
Warrant [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Summary Of Non-Plan Options And Warrants	'
		Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Term			Aggregate Intrinsic Value ($)
	Outstanding at beginning of year	2,967,911		$	0.87
	Granted	0			0
	Exercised	-1,008,394			0.99
	Forfeited	0			0
	Expired	0			0
	Outstanding at end of year	1,959,517			0.81		1.96	years		$	7,336,710
	Exercisable at end of year	1,959,517		$	0.81		1.96	years		$	7,336,710
Summary Of Valuation Assumptions	'
		Year ended December 31,
		2013		2012		2011
	Expected option term 1	4 to 5 years		4 to 6 years		4 to 5 years
	Expected volatility factor 2	91.5% to 104%		93.4% to 104.3%		89.4% to 100.2%
	Risk-free interest rate 3	0.5% to 1.0%		0.7% to 1.0%		0.9% to 2.4%
	Expected annual dividend yield	0%		0%		0%
	1 The expected term was determined based on the remaining contractual life of the award on the measurement date.
	2 The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected life of the award.
	3 The risk-free interest rate for periods equal to the expected term of the award is based on the U.S. Treasury yield curve in effect at the measurement date.
Restricted Stock Award And Restricted Stock Unit [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Summary Of Restricted Stock Activity	'
		Non-vested Shares
		Shares		Weighted-Average Grant-Date Fair Value
	Non-vested at beginning of year	953,842		$	2.67
	Granted	259,290			3.99
	Vested	-214,082			3.22
	Forfeited	0			0
	Non-vested at end of year	999,050		$	2.90

Stock_Authorization_And_Issuan1

Stock Authorization And Issuance (Tables)	12 Months Ended
	Dec. 31, 2012
Stock Authorization And Issuance [Abstract]	'
Summary Of Equity Offerings	'
	The following table presents a summary of equity offerings for the years ended December 31, 2013, 2012, and 2011 (in thousands, except for per share amounts)
	Date	Transaction	# of Common Shares/ Units Sold (in 000’s)	Price per Share/Unit	# of Warrants Issued (in 000’s)	Exercise Price per Warrant	Net Proceeds  (in 000’s) (1)	Offering as % of Out-standing Common Stock (2)
	6-Aug-13	Offering to a limited number of institutional and other investors	3,681	$3.80	n/a	n/a	$13,000	4.00%
	26-Mar-13	Shelf underwritten offering (4)	4,715	$3.25	n/a	n/a	$14,300	5.40%
	19-Sep-12	Shelf offering to a limited number of institutional and other investors	4,382	$2.30	n/a	n/a	$9,200	5.30%
	18-Apr-12	Shelf offering to a limited number of institutional and other investors	8,139	$1.05	n/a	n/a	$8,300	10.70%
	14-Sep-11	Shelf offering to two institutional investors	7,800	$0.88	n/a	n/a	$6,500	11.60%
	30-Mar-11	Shelf offering to a limited number of institutional and other investors (3)	3,332	$0.71	n/a	n/a	$4,100	10.20%
			2,691	$0.81	807	$0.88
		-1	After deduction of applicable underwriters’ discounts, placement agent fees, and other offering costs.
		-2	Calculated on an after-issued basis.
		-3	Offering included the sale of 3,332,117 shares of common stock at $0.71 per share and 2,691,360 units, each consisting of one share of common stock and three-tenths of a warrant to purchase common stock, at $0.81 per unit.  The warrants are exercisable beginning September 30, 2011 and expire on September 30, 2016.  The warrants were recorded at their relative fair value of approximately $0.4 million as estimated at their grant date using the Black-Scholes option pricing model (see Note 8)
		-4	Ladenburg Thalmann Financial Services Inc. acted as underwriter for the transaction.

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Schedule Of Future Minimum Lease Payments For Capital Leases	'
	Contractual obligations:	2014		2015			2016		2017	Total
	Operating leases	$	362,200		248,900	$	248,900	$	106,800	$	966,800
	Capital leases	$	30,000	$	7,500	$	0	$	0	$	37,500

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Schedule Of Assets Measured At Fair Value On A Recurring Basis	'
				Fair Value Measurements
		Total		Quoted Prices in Active Markets  (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2013:
	Available for sale securities:
	Municipal bond
	mutual funds	$	16,957,489	$	16,957,489	$	0	$	0
	December 31, 2012:
	Available for sale securities:
	Municipal bond
	mutual funds	$	8,041,904	$	8,041,904	$	0	$	0

Quarterly_Financial_Data_Table

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Schedule Of Quaterly Financial Data	'
	The quarterly financial data presented below is in thousands except for per share data:
		For the three months ended
		31-Mar-13		30-Jun-13		30-Sep-13		31-Dec-13
	Revenues	$	0	$	0	$	0	$	0
	Gross margin		0		0		0		0
	Net loss		-6,462		-7,127		-6,424		-7,859
	Basic and diluted net loss per common share	$	-0.08	$	-0.08	$	-0.07	$	-0.08
		For the three months ended
		31-Mar-12		30-Jun-12		30-Sep-12		31-Dec-12
	Revenues	$	0	$	0	$	0	$	0
	Gross margin		0		0		0		0
	Net loss		-4,068		-5,061		-5,019		-6,174
	Basic and diluted net loss per common share	$	-0.06	$	-0.07	$	-0.06	$	-0.07

Liquidity_Details

Liquidity (Details) (USD $)

3 Months Ended

12 Months Ended

0 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 13, 2014

Private Placement [Member]

liquidity And Working Capital [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

($7,859,000)

($6,424,000)

($7,127,000)

($6,462,000)

($6,174,000)

($5,019,000)

($5,061,000)

($4,068,000)

($27,872,293)

($20,321,812)

($14,573,353)

'

Net cash used in operating activities

'

'

'

'

'

'

'

'

-18,861,413

-14,663,683

-11,436,547

'

Accumulated deficit

-290,010,708

'

'

'

-262,138,415

'

'

'

-290,010,708

-262,138,415

'

'

Net working capital

15,200,000

'

'

'

'

'

'

'

15,200,000

'

'

'

Cash, cash equivalents, and available for sale securities

17,200,000

'

'

'

'

'

'

'

17,200,000

'

'

'

Proceeds from issurance of common stock in private placement

'

'

'

'

'

'

'

'

'

'

'

$11,900,000

Summary_Of_Significant_Account3

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Significant Accounting Policies [Line Items]	'	'	'
Life Insurance Premiums	$0	$29,330	$45,780
Weighted Average Number of Shares Outstanding, Basic	88,968,043	75,999,278	60,038,857
Options and warrants oustanding	$8,888,727	$10,482,608	$11,105,288
Patents and copyrights [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Intangible assets, useful life	'17 years	'	'
Patents and copyrights [Member] | Minimum [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Intangible assets, useful life	'15 years	'	'
Patents and copyrights [Member] | Maximum [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Intangible assets, useful life	'20 years	'	'
Licensing Fees [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Intangible assets, useful life	'2 years	'	'
Licensing Fees [Member] | Minimum [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Intangible assets, useful life	'2 years	'	'
Licensing Fees [Member] | Maximum [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Intangible assets, useful life	'5 years	'	'
Restricted Stock Units (RSUs) [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Unvested, Shares	1,882,384	1,433,842	1,104,377

Summary_Of_Significant_Account4

Summary Of Significant Accounting Policies (Schedule Of Property And Equipment) (Details)	12 Months Ended
	Dec. 31, 2013
Leasehold Improvements [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life	'Remaining life of lease
Furniture and Fixtures [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life	'7 years
Maximum [Member] | Manufacturing And Office Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life	'7 years
Maximum [Member] | Equipment and software [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life	'5 years
Minimum [Member] | Manufacturing And Office Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life	'5 years
Minimum [Member] | Equipment and software [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life	'3 years

Prepaid_Expenses_And_Other_Det

Prepaid Expenses And Other (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Prepaid Expenses And Other [Abstract]	'	'
Prepaid Insurance	$409,790	$401,373
Cash surrender value of life insurance	0	456,452
Other current assets	142,171	119,485
Prepaid Expense and Other Assets, Current, Total	$551,961	$977,310

Property_And_Equipment_Net_Nar

Property And Equipment, Net (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property And Equipment, Net [Abstract]	'	'	'
Depreciation	$174,444	$185,146	$314,113
Capital lease depreciation expense	28,748	24,100	14,371
Accumulated depreciation	87,654	58,906	34,806
Capital lease interest rate	'	15.25%	'
Capital lease obligation	0	71,925	0
Monthly payments	'	$2,500	'

Property_And_Equipment_Net_Sch

Property And Equipment, Net (Schedule Of Property And Equipment, Net) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Property and equipment	$9,498,228	$9,424,896
Less accumualted depreciation and amortization	-9,190,843	-9,021,450
Property, Plant and Equipment, Net, Total	307,385	403,446
Equipment and software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment	8,158,454	8,082,091
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment	837,377	837,377
Furniture and Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment	$502,397	$505,428

Intangible_Assets_Details

Intangible Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]	'
Impairment of intangible assets	$0
Licensing Fees [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'2 years
Minimum [Member] | Patents [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'15 years
Minimum [Member] | Licensing Fees [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'2 years
Maximum [Member] | Patents [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'20 years
Maximum [Member] | Licensing Fees [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'5 years

Intangible_Assets_Schedule_Of_

Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$19,517,020	$18,864,991
Accumulated Amortization	10,964,588	9,886,890
Net book value	8,552,432	8,978,101
Patents and copyrights [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	18,943,020	18,290,991
Accumulated Amortization	10,397,136	9,329,438
Net book value	8,545,884	8,961,553
Licensing Fees [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	574,000	574,000
Accumulated Amortization	567,452	557,452
Net book value	$6,548	$16,548

Intangible_Assets_Schedule_Of_1

Intangible Assets (Schedule Of Amortization Expense Recorded And Weighted Average Estimated Life) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	$1,077,698	$1,052,898	'
Patents and copyrights [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	1,067,698	1,049,446	1,013,681
Weighted average estimated life (in years)	'17 years	'	'
Licensing Fees [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	$10,000	$3,452	$0
Weighted average estimated life (in years)	'2 years	'	'

Intangible_Assets_Schedule_Of_2

Intangible Assets (Schedule Of Future Amortization Expense) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets [Abstract]	'	'
2014	$1,054,955	'
2015	953,970	'
2016	917,996	'
2017	915,396	'
2018	859,572	'
2019 and thereafter	3,850,543	'
Net book value	$8,552,432	$8,978,101

Income_Taxes_And_Tax_Status_Na

Income Taxes And Tax Status (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 1997
Tax Credit Carryforward [Line Items]	'	'
Operating Loss Carryforwards	$258,088,247	$13,432,293
Unrecognized tax benefit, excess tax benefits from share based compensation	470,000	'
Windfall Tax Benefit [Member]	'	'
Tax Credit Carryforward [Line Items]	'	'
Operating Loss Carryforwards	1,747,888	'
Research Tax Credit Carryforward [Member]	'	'
Tax Credit Carryforward [Line Items]	'	'
Tax Credit Carryforward, Amount	7,618,821	496,329
Capital Loss Carryforward [Member]	'	'
Tax Credit Carryforward [Line Items]	'	'
Tax Credit Carryforward, Amount	$15,072	'

Income_Taxes_And_Tax_Status_Sc

Income Taxes And Tax Status (Schedule of Effective Income Tax Rate Reconciliation) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes And Tax Status [Abstract]	'	'	'
Tax benefit at statutory rate	($9,476,580)	($6,909,416)	($4,954,940)
State tax benefit	-975,530	-711,263	-510,067
Increase in valuation allowance	10,648,966	7,640,454	5,722,492
Research and development credit	-299,044	-239,216	-272,117
Capital loss	0	0	-38,439
Other	102,188	219,441	53,071
Income Tax Expense (Benefit), Total	$0	$0	$0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.00%	34.00%	34.00%

Income_Taxes_And_Tax_Status_Sc1

Income Taxes And Tax Status (Schedule of Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Income Taxes And Tax Status [Abstract]	'	'
Net operating loss carry-forward	$94,742,725	$85,844,921
Research and development credit	7,618,821	7,319,776
Stock compensation	3,548,655	2,882,576
Patents and other	1,828,103	1,770,367
Fixed assets	121,179	125,737
Accrued liabilities	80,204	64,507
Capital loss carry-forward	5,652	38,439
Charitable Contributions	4,500	0
Deferred tax assets, gross	107,949,839	98,046,323
Less valuation allowance	-107,949,839	-98,006,927
Deferred tax assets, net	0	39,396
Gains on the cash surrender value of life insurance	0	39,396
Deferred tax liabilities, gross	0	39,396
Net deferred tax asset	$0	$0

Income_Taxes_And_Tax_Status_Sc2

Income Taxes And Tax Status (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes And Tax Status [Abstract]	'	'	'
Unrecognized tax benefits, beginning of year	$1,369,614	$1,369,614	$1,369,614
Gross increases - tax positions in prior period	0	0	0
Change in Estimate	0	0	0
Unrecognized tax benefits, end of year	$1,369,614	$1,369,614	$1,369,614

Share_Based_Compensation_Narra

Share Based Compensation (Narrative) (Details) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

Aug. 06, 2013

Mar. 26, 2013

Sep. 19, 2012

Apr. 18, 2012

Sep. 14, 2011

Mar. 30, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Nov. 30, 2013

Nov. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Two Thousand And Eight Equity Incentive Plan [Member]

Two Thousand Performance Equity Plan [Member]

Two Thousand And Eleven Long Term Incentive Equity Plan [Member]

Restricted Stock Award [Member]

Restricted Stock Award [Member]

Restricted Stock Award [Member]

Restricted Stock Award And Restricted Stock Unit [Member]

Restricted Stock Award And Restricted Stock Unit [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Warrant [Member]

Warrant [Member]

Warrants And Options [Member]

Warrants And Options [Member]

Warrants And Options [Member]

Warrants And Options [Member]

Warrants And Options [Member]

Warrants And Options [Member]

Consultants [Member]

Consultants [Member]

Consultants [Member]

Consultants [Member]

Non Employee [Member]

Plan Based [Member]

Plan Based [Member]

Plan Based [Member]

Plan Based [Member]

Plan Based [Member]

Non Plan [Member]

Non Plan [Member]

Non Plan [Member]

Non Plan [Member]

Non Plan [Member]

Non Plan [Member]

Performance Based Restricted Stock Units [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Non Plan [Member]

Non Plan [Member]

Non Plan [Member]

Non Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation cost, net of estimated forfeitures

'

'

'

'

'

'

$4,131,257

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected weighted average period to recognize the compensation cost, in years

'

'

'

'

'

'

'1 year 1 month 6 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares authorized

'

'

'

'

'

'

'

'

'

500,000

5,000,000

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares available for grant

'

'

'

'

'

'

'

'

'

8,315

631,134

7,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum number of shares per employee

'

'

'

'

'

'

'

'

'

50,000

1,000,000

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested shares

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

999,050

953,842

'

'

'

1,433,842

1,882,384

1,104,377

883,334

'

480,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested shares, forfeited

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

0

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months

'

'1 year

Granted, Shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

259,290

'

'

'

'

'

'

'

900,000

'

'

'

'

'

'

'

'

'

'

750,000

150,000

'

'

'

Total share-based expense

'

'

'

'

'

'

6,931,438

3,553,414

1,437,174

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

29,000

'

'

'

'

'

'

'

'

'

'

'

1,912,000

960,000

'

Issuance of common stock and warrants in private and public offerings, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,849,517

2,607,911

'

'

'

'

'

'

'

'

'

'

'

Weighted average fair value of option shares granted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$2.53

$2.65

$0.66

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair market value of vested shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,285,859

1,404,456

192,959

'

'

'

'

'

'

'

'

'

'

'

129,192

166,668

470,383

'

'

'

'

'

Vested fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

871,417

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intristic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

648,433

62,945

0

'

'

'

'

'

'

'

'

3,038,635

3,831,971

232,269

'

'

'

'

'

'

'

'

Net proceeds from exercise of options and warrants

$13,000,000

[1]

$14,300,000

[1],[2]

$9,200,000

[1]

$8,300,000

[1]

$6,500,000

[1]

$4,100,000

[1],[3]

$1,147,380

$1,381,694

$330,938

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

After deduction of applicable underwritersb discounts, placement agent fees, and other offering costs.

[2]

Ladenburg Thalmann Financial Services Inc. acted as underwriter for the transaction.

[3]

Offering included the sale of 3,332,117 shares of common stock at $0.71 per share and 2,691,360 units, each consisting of one share of common stock and three-tenths of a warrant to purchase common stock, at $0.81 per unit. The warrants are exercisable beginning September 30, 2011 and expire on September 30, 2016. The warrants were recorded at their relative fair value of approximately $0.4 million as estimated at their grant date using the Black-Scholes option pricing model (see Note 8)

Share_Based_Compensation_Sched

Share Based Compensation (Schedule Of Share-Based Compensation Expense Included In Statements Of Operations) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total share-based expense	$6,931,438	$3,553,414	$1,437,174
Research And Development Expense [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total share-based expense	1,594,603	765,126	706,734
Sales And Marketing Expense [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total share-based expense	327,199	207,125	121,384
General And Administrative Expense [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total share-based expense	$5,009,636	$2,581,163	$609,056

ShareBased_Compensation_Summar

Share-Based Compensation (Summary Of RSU Activity) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013
	Restricted Stock Units (RSUs) [Member]	Restricted Stock Units (RSUs) [Member]	Restricted Stock Units (RSUs) [Member]	Plan Based [Member]	Non Plan [Member]
				Restricted Stock Award And Restricted Stock Unit [Member]	Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Non-vested at beginning of year, Shares	1,882,384	1,433,842	1,104,377	953,842	480,000
Granted, Shares	'	'	'	259,290	900,000
Vested, Shares	'	'	'	-214,082	-496,666
Forfeited, Shares	'	'	'	0	0
Non-vested at end of year, Shares	1,882,384	1,433,842	1,104,377	999,050	883,334
Non-vested at beginning of year, Weighted-Average Grant-Date Fair Value	'	'	'	$2.67	$0.99
Granted, Weighted Average Grant Date Fair Value	'	'	'	$3.99	$3.90
Vested, Weighted Average Grant Date Fair Value	'	'	'	$3.22	$1.09
Forfeited, Weighted Average Grant Date Fair Value	'	'	'	$0	$0
Non-vested at end of year, Weighted-Average Grant-Date Fair Value	'	'	'	$2.90	$3.90

ShareBased_Compensation_Summar1

Share-Based Compensation (Summary Of Option Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Plan Based [Member] | Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding, Shares, Beginning of year	7,514,697
Options granted	258,780
Exercised, Shares	-217,181
Forfeited, Shares	0
Expired, Shares	-627,086
Outstanding, Shares, End of year	6,929,210
Outstanding, Weighted Average Exercise Price, Beginning of year	$3.26
Granted, Weighted Average Exercise Price	$3.32
Exercised, Weighted Average Exercise Price	$1.21
Forfeited, Weighted Average Exercise Price	$0
Expired, Weighted Average Exercise Price	$8.36
Outstanding, Weighted Average Exercise Price, End of year	$2.87
Outstanding, Weighted Average Remaining Contractual Term	'4 years 4 months 24 days
Outstanding, Aggregate Intrinsic Value	$15,433,876
Exercisable, Shares	4,780,057
Exercisable, Weighted Average Exercise Price	$3.24
Exercisable, Weighted Average Remaining Contractual Term	'3 years 11 months 23 days
Exercisable, Aggregate Intrinsic Value	10,042,794
Non Plan [Member] | Warrants And Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding, Shares, Beginning of year	2,967,911
Options granted	0
Exercised, Shares	-1,008,394
Forfeited, Shares	0
Expired, Shares	0
Outstanding, Shares, End of year	1,959,517
Outstanding, Weighted Average Exercise Price, Beginning of year	$0.87
Granted, Weighted Average Exercise Price	$0
Exercised, Weighted Average Exercise Price	$0.99
Forfeited, Weighted Average Exercise Price	$0
Expired, Weighted Average Exercise Price	$0
Outstanding, Weighted Average Exercise Price, End of year	$0.81
Outstanding, Weighted Average Remaining Contractual Term	'1 year 11 months 16 days
Outstanding, Aggregate Intrinsic Value	7,336,710
Exercisable, Shares	1,959,517
Exercisable, Weighted Average Exercise Price	$0.81
Exercisable, Weighted Average Remaining Contractual Term	'1 year 11 months 16 days
Exercisable, Aggregate Intrinsic Value	$7,336,710

ShareBased_Compensation_Summar2

Share-Based Compensation (Summary Of Valuation Assumptions) (Details)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Stock Options [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Expected annual dividend yield	0.00%		0.00%		0.00%
Plan Based [Member] | Stock Options [Member] | Minimum [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Expected option term	'5 years	[1]	'6 years	[1]	'5 years	[1]
Expected volatility	97.90%	[2]	90.20%	[2]	92.00%	[2]
Risk-free interest rate	0.80%	[3]	0.80%	[3]	0.90%	[3]
Plan Based [Member] | Stock Options [Member] | Maximum [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Expected option term	'6 years	[1]	'7 years	[1]	'6 years	[1]
Expected volatility	103.70%	[2]	94.80%	[2]	97.70%	[2]
Risk-free interest rate	1.80%	[3]	1.00%	[3]	2.00%	[3]
Non Plan [Member] | Warrants And Options [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Expected annual dividend yield	0.00%		0.00%		0.00%
Non Plan [Member] | Warrants And Options [Member] | Minimum [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Expected option term	'4 years	[4]	'4 years	[4]	'4 years	[4]
Expected volatility	91.50%	[5]	93.40%	[5]	89.40%	[5]
Risk-free interest rate	0.50%	[6]	0.70%	[6]	0.90%	[6]
Non Plan [Member] | Warrants And Options [Member] | Maximum [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Expected option term	'5 years	[4]	'6 years	[4]	'5 years	[4]
Expected volatility	104.00%	[5]	104.30%	[5]	100.20%	[5]
Risk-free interest rate	1.00%	[6]	1.00%	[6]	2.40%	[6]
[1]	The expected term was generally determined based on historical activity for grants with similar terms and for similar groups of employees and represents the period of time that options are expected to be outstanding. For employee options, groups of employees with similar historical exercise behavior are considered separately for valuation purposes. For consultants, the expected term was determined based on the contractual life of the award.
[2]	The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected option life of the grant.
[3]	The risk-free interest rate for periods equal to the expected term of the share option is based on the U.S. Treasury yield curve in effect at the measurement date.
[4]	The expected term was determined based on the remaining contractual life of the award on the measurement date.
[5]	The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected life of the award.
[6]	The risk-free interest rate for periods equal to the expected term of the award is based on the U.S. Treasury yield curve in effect at the measurement date.

ShareBased_Compensation_Summar3

Share-Based Compensation (Summary Of Options And Warrants By Exercise Price Range) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options and Warrants Outstanding	8,888,727
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$2.41
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'3 years 10 months 13 days
Options and Warrants Exercisable	6,739,574
Options exercise price	$2.53
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'3 years 4 months 21 days
$0.54 - $0.88 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Excercise price minimum	$0.54
Exercise price maximum	$0.88
Options and Warrants Outstanding	1,960,208
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$0.59
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'2 years 3 months 15 days
Options and Warrants Exercisable	1,925,030
Options exercise price	$0.59
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'2 years 3 months
$0.89 - $1.88 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Excercise price minimum	$0.89
Exercise price maximum	$1.88
Options and Warrants Outstanding	2,708,742
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$1
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'4 years 6 months 15 days
Options and Warrants Exercisable	1,771,182
Options exercise price	$1.01
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'4 years 4 months 6 days
$2.01 - $3.13 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Excercise price minimum	$2.01
Exercise price maximum	$3.13
Options and Warrants Outstanding	3,019,371
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$2.81
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'5 years 2 months 16 days
Options and Warrants Exercisable	1,972,987
Options exercise price	$2.84
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'5 years
$3.15 - $5.40 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Excercise price minimum	$3.15
Exercise price maximum	$5.40
Options and Warrants Outstanding	404,655
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$4.30
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'2 years 11 months 23 days
Options and Warrants Exercisable	274,624
Options exercise price	$4.35
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'1 year 1 month 21 days
$5.70 - $8.60 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Excercise price minimum	$5.70
Exercise price maximum	$8.60
Options and Warrants Outstanding	337,470
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$6.74
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'1 year 1 month 6 days
Options and Warrants Exercisable	337,470
Options exercise price	$6.74
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'1 year 1 month 6 days
$9.06 - $26.75 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Excercise price minimum	$9.06
Exercise price maximum	$26.75
Options and Warrants Outstanding	458,281
Options and Warrants Outstanding, Wtd. Avg. Exercise Price	$11.08
Options and Warrants Outstanding, Wtd. Avg. Remaining Contractual Life	'6 months 29 days
Options and Warrants Exercisable	458,281
Options exercise price	$11.08
Options and Warrants Exercisable, Wtd. Avg. Remaining Contractual Life	'6 months 29 days

Stock_Authorization_And_Issuan2

Stock Authorization And Issuance (Details) (USD $)

12 Months Ended

0 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Aug. 06, 2013

Mar. 26, 2013

Sep. 19, 2012

Apr. 18, 2012

Sep. 14, 2011

Mar. 30, 2011

Nov. 17, 2005

Mar. 13, 2014

Series E Preferred Stock [Member]

Private Placement [Member]

item

Stock Authorization And Issuance [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock, Shares Authorized

15,000,000

'

'

'

'

'

'

'

'

100,000

'

Percentage of aggregate purchase price paid of amount due to investor for each thirty day period of registration default

1.00%

'

'

'

'

'

'

'

'

'

1.00%

Registration default, maximum penalty, percentage of aggregate purchase price

6.00%

'

'

'

'

'

'

'

'

'

6.00%

Registration default, maximum penalty amount

$839,399

'

'

'

'

'

'

'

'

'

$720,000

Sale of common stock, number of shares

93,208,471

82,903,609

'

3,681,000

4,715,000

[1]

4,382,000

8,139,000

7,800,000

3,332,117

[2]

'

2,666,666

Sale of stock price per share

'

'

'

$3.80

$3.25

[1]

$2.30

$1.05

$0.88

$0.71

[2]

'

$4.50

Number of accredited investors in private placement

'

'

'

'

'

'

'

'

'

'

2

Proceeds from issurance of common stock in private placement

'

'

'

'

'

'

'

'

'

'

11,900,000

Percentage of outstanding common stock on an after-issued basis

'

'

'

4.00%

[3]

5.40%

[1],[3]

5.30%

[3]

10.70%

[3]

11.60%

[3]

10.20%

[2],[3]

'

2.80%

Net proceeds from issuance of common stock in public and private offerings

$27,327,975

$17,555,674

$10,556,754

'

'

'

'

'

'

'

'

[1]

Ladenburg Thalmann Financial Services Inc. acted as underwriter for the transaction.

[2]

Offering included the sale of 3,332,117 shares of common stock at $0.71 per share and 2,691,360 units, each consisting of one share of common stock and three-tenths of a warrant to purchase common stock, at $0.81 per unit. The warrants are exercisable beginning September 30, 2011 and expire on September 30, 2016. The warrants were recorded at their relative fair value of approximately $0.4 million as estimated at their grant date using the Black-Scholes option pricing model (see Note 8)

[3]

Calculated on an after-issued basis.

Stock_Authorization_And_Issuan3

Stock Authorization And Issuance (Summary Of Equity Offerings)(Details) (USD $)

0 Months Ended

12 Months Ended

Aug. 06, 2013

Mar. 26, 2013

Sep. 19, 2012

Apr. 18, 2012

Sep. 14, 2011

Mar. 30, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 30, 2013

Equity Offerings [Line Items]

'

'

'

'

'

'

'

'

'

'

Sale of common stock, number of shares

3,681,000

4,715,000

[1]

4,382,000

8,139,000

7,800,000

3,332,117

[2]

93,208,471

82,903,609

'

'

Sale of stock price per share

$3.80

$3.25

[1]

$2.30

$1.05

$0.88

$0.71

[2]

'

'

'

'

Net Proceeds

$13,000,000

[3]

$14,300,000

[1],[3]

$9,200,000

[3]

$8,300,000

[3]

$6,500,000

[3]

$4,100,000

[2],[3]

$1,147,380

$1,381,694

$330,938

'

Percentage of outstanding common stock on an after-issued basis

4.00%

[4]

5.40%

[1],[4]

5.30%

[4]

10.70%

[4]

11.60%

[4]

10.20%

[2],[4]

'

'

'

'

Warrants recorded at fair value

'

'

'

'

'

$400,000

$663,100

$1,081,050

'

'

Price per unit

'

'

'

'

'

'

'

'

'

$0.81

Common Stock Unit [Member]

'

'

'

'

'

'

'

'

'

'

Equity Offerings [Line Items]

'

'

'

'

'

'

'

'

'

'

Sale of common stock, number of shares

'

'

'

'

'

2,691,360

2,691,000

'

'

'

Sale of stock price per share

'

'

'

'

'

'

$0.81

'

'

'

Exercise Price per Warrant

'

'

'

'

'

'

0.88

'

'

'

Shares issued within each unit sold

'

'

'

'

'

1

'

'

'

'

Warrants issued within each unit sold

'

'

'

'

'

0.03

807,000

'

'

'

[1]

Ladenburg Thalmann Financial Services Inc. acted as underwriter for the transaction.

[2]

Offering included the sale of 3,332,117 shares of common stock at $0.71 per share and 2,691,360 units, each consisting of one share of common stock and three-tenths of a warrant to purchase common stock, at $0.81 per unit. The warrants are exercisable beginning September 30, 2011 and expire on September 30, 2016. The warrants were recorded at their relative fair value of approximately $0.4 million as estimated at their grant date using the Black-Scholes option pricing model (see Note 8)

[3]

After deduction of applicable underwritersb discounts, placement agent fees, and other offering costs.

[4]

Calculated on an after-issued basis.

Shareholder_Protection_Rights_1

Shareholder Protection Rights Agreement (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Shareholder Protection Rights Agreement [Abstract]	'
Acquisition of outstanding shares	15.00%
Exercise Price	45
Redemption price	$0.01

Commitments_And_Contingencies_1

Commitments And Contingencies (Details) (USD $)	12 Months Ended								0 Months Ended	1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 20, 2011	Oct. 31, 2013
				Jacksonville Florida [Member]	Lake Mary Florida [Member]	Equipment [Member]	Equipment [Member]	Equipment [Member]	Qualcomm Inc [Member]	Qualcomm Inc [Member]
									item	item
Commitments and Contingencies [Line Items]	'	'	'	'	'	'	'	'	'	'
Rent expense	$476,782	$515,437	$408,070	'	'	$235,370	$232,659	$188,713	'	'
Minimum rental payment	'	'	'	23,000	18,900	'	'	'	'	'
Patents infringement, amount awarded	'	'	'	'	'	'	'	'	'	$172,700,000
Gain contingency, number of claims	'	'	'	'	'	'	'	'	'	11
Number of patents found infringed upon	'	'	'	'	'	'	'	'	6	4

Commitments_And_Contingencies_2

Commitments And Contingencies (Contractual Obligations) (Details) (USD $)	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Operating leases 2014	$362,200
Operating leases 2015	248,900
Operating leases 2016	248,900
Operating leases 2017	106,800
Operating Leases Total	966,800
Capital Leases 2014	30,000
Capital Leases 2015	7,500
Capital Leases 2016	0
Capital Leases 2017	0
Capital Leases, Total	$37,500

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Aug. 06, 2013

Mar. 26, 2013

Sep. 19, 2012

Apr. 18, 2012

Sep. 14, 2011

Mar. 30, 2011

Dec. 31, 2012

Sep. 19, 2012

Apr. 18, 2012

Dec. 31, 2012

Sep. 14, 2011

Mar. 30, 2011

Nov. 19, 2010

Marxe And Greenhouse [Member]

Marxe And Greenhouse [Member]

Marxe And Greenhouse [Member]

Wellington [Member]

Wellington [Member]

Wellington [Member]

Wellington [Member]

Related Party Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount paid for patent-related legal services

$587,000

$906,000

$784,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership of outstanding stock

'

'

'

'

'

'

'

'

'

5.00%

'

'

5.00%

'

'

'

Sale of common stock, number of shares

93,208,471

82,903,609

'

3,681,000

4,715,000

[1]

4,382,000

8,139,000

7,800,000

3,332,117

[2]

'

300,000

2,857,143

'

500,000

1,200,000

2,829,520

Sale of stock price per share

'

'

'

$3.80

$3.25

[1]

$2.30

$1.05

$0.88

$0.71

[2]

'

$2.30

$1.05

'

$0.88

$0.71

$0.42

[1]

Ladenburg Thalmann Financial Services Inc. acted as underwriter for the transaction.

[2]

Offering included the sale of 3,332,117 shares of common stock at $0.71 per share and 2,691,360 units, each consisting of one share of common stock and three-tenths of a warrant to purchase common stock, at $0.81 per unit. The warrants are exercisable beginning September 30, 2011 and expire on September 30, 2016. The warrants were recorded at their relative fair value of approximately $0.4 million as estimated at their grant date using the Black-Scholes option pricing model (see Note 8)

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule Of Assets Measured At Fair Value On A Recurring Basis) (Details) (Municipal Bond Mutual Funds [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets measured at fair value on a recurring basis	$16,957,489	$8,041,904
Quoted Prices In Active Markets (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets measured at fair value on a recurring basis	16,957,489	8,041,904
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets measured at fair value on a recurring basis	0	0
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets measured at fair value on a recurring basis	$0	$0

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Revenues	$0	$0	$0	$0	$0	$0	$0	$0	'	'	'
Gross margin	0	0	0	0	0	0	0	0	0	0	0
Net loss	($7,859,000)	($6,424,000)	($7,127,000)	($6,462,000)	($6,174,000)	($5,019,000)	($5,061,000)	($4,068,000)	($27,872,293)	($20,321,812)	($14,573,353)
Basic and diluted net loss per common share	($0.08)	($0.07)	($0.08)	($0.08)	($0.07)	($0.06)	($0.07)	($0.06)	($0.31)	($0.27)	($0.24)

Schedule_II_Valuation_And_Qual1

Schedule II - Valuation And Qualifying Accounts (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]	'	'	'
Balance at beginning of period	$98,006,927	$92,592,971	$88,804,628
Provision	10,648,966	7,640,454	5,722,492
Write offs	-706,055	-2,226,498	-1,934,149
Balance at end of period	$107,949,839	$98,006,927	$92,592,971