Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 111,022,034	$ 130,189,421
Prepaid expenses and other current assets	793,808	1,081,084
Total current assets	111,815,842	131,270,505
Property and equipment, net	3,461,121	2,766,992
Other assets	142,870	55,161
Total assets	115,419,833	134,092,658
Current liabilities:
Accounts payable	2,854,796	2,584,249
Accrued expenses	1,519,909	3,734,348
Short term debt	2,389,222	2,271,111
Total current liabilities	6,763,927	8,589,708
Noncurrent liability:
Long term debt	1,899,802	3,025,423
STOCKHOLDERS' EQUITY
Common stock, $0.00033 par value, 75,000,000 shares authorized at June 30, 2016 and December 31, 2015, 28,849,446 shares and 28,810,845 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively	9,733	9,720
Additional paid-in capital	187,546,880	184,721,777
Accumulated deficit	(80,800,509)	(62,253,970)
Total stockholders' equity	106,756,104	122,477,527
Total liabilities and stockholders' equity	$ 115,419,833	$ 134,092,658

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).

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

- Definition

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