CONDENSED BALANCE SHEETS (USD $)	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 9,643,767	$ 11,466,807
Accounts receivable from related party	56,960	23,544
Trade accounts receivable	12,679us-gaap_AccountsReceivableNetCurrent	14,013us-gaap_AccountsReceivableNetCurrent
Inventory	143,298us-gaap_InventoryNet	171,575us-gaap_InventoryNet
Prepaid expenses	602,410us-gaap_PrepaidExpenseCurrent	504,719us-gaap_PrepaidExpenseCurrent
Total current assets	10,459,114us-gaap_AssetsCurrent	12,180,658us-gaap_AssetsCurrent
Fixed assets, net	739,917us-gaap_PropertyPlantAndEquipmentNet	773,779us-gaap_PropertyPlantAndEquipmentNet
Intangible assets, net	176,351	195,765
Other assets	110,991us-gaap_OtherAssetsNoncurrent	116,919us-gaap_OtherAssetsNoncurrent
Total assets	11,486,373us-gaap_Assets	13,267,121us-gaap_Assets
Current liabilities:
Accounts payable	646,005us-gaap_AccountsPayableCurrent	513,927us-gaap_AccountsPayableCurrent
Accrued expenses	197,719us-gaap_AccruedLiabilitiesCurrent	343,225us-gaap_AccruedLiabilitiesCurrent
Deferred revenue	3,065,256us-gaap_DeferredRevenueCurrent	3,154,498us-gaap_DeferredRevenueCurrent
Total current liabilities	3,908,980us-gaap_LiabilitiesCurrent	4,011,650us-gaap_LiabilitiesCurrent
Long Term Debt	4,756,040us-gaap_LongTermDebtNoncurrent	4,738,614us-gaap_LongTermDebtNoncurrent
Total Liabilities	8,665,020us-gaap_Liabilities	8,750,264us-gaap_Liabilities
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock, $0.001 par value — 300,000,000 shares authorized; 172,738,162 and 172,683,342 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	172,740us-gaap_CommonStockValue	172,686us-gaap_CommonStockValue
Additional paid-in capital	125,582,120	125,434,483
Accumulated deficit	(122,933,507)	(121,090,312)
Total stockholders’ equity	2,821,353us-gaap_StockholdersEquity	4,516,857us-gaap_StockholdersEquity
Total liabilities and stockholders’ equity	$ 11,486,373	$ 13,267,121

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682