Condensed Balance Sheets - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 9,883,088	$ 14,155,809
Prepaid expenses	716,616	931,461
Other current assets	7,997	137,812
Total current assets	10,607,701	15,225,082
Other assets		7,997
Total assets	10,607,701	15,233,079
Current Liabilities:
Accounts payable and accrued expenses	1,372,821	1,011,629
Accrued compensation	563,753	697,245
Other current liabilities	5,939	12,313
Current portion of long-term debt	1,251,806	126,806
Total current liabilities	3,194,319	1,847,993
Long-term debt, net of current portion	3,101,770	4,196,422
Total liabilities	6,296,089	6,044,415
Stockholders' equity:
Common stock, $0.0001 par value; authorized shares — 50,000,000; issued and outstanding shares — 6,306,130 and 6,112,091 at June 30, 2015 and December 31, 2014, respectively	631	611
Additional paid-in capital	47,012,041	45,127,202
Accumulated deficit	(42,701,060)	(35,939,149)
Total stockholders' equity	4,311,612	9,188,664
Total liabilities and stockholders' equity	$ 10,607,701	$ 15,233,079

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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

- Definition

Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.