BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 38,802	$ 15,354
Other current assets	114	134
Total current assets	38,916	15,488
Property and equipment, net	28	36
Other assets	630	608
Total assets	39,574	16,132
Current liabilities:
Accounts payable	364	795
Accrued compensation and employee benefits	669	329
Accrued expenses and other liabilities	471	264
Total current liabilities	1,504	1,388
Deferred rent, net of current portion		3
Total liabilities	$ 1,504	$ 1,391
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value; 5 million shares authorized; no shares issued or outstanding at December 31, 2015 and 2014.
Common stock, $0.001 par value; 100 million shares authorized at December 31, 2015 and 2014; 9,051,217 and 3,021,498 shares issued and outstanding at December 31, 2015 and 2014, respectively	$ 9	$ 3
Additional paid-in capital	134,128	99,360
Accumulated deficit	(96,067)	(84,622)
Total stockholders’ equity	38,070	14,741
Total liabilities and stockholders’ equity	$ 39,574	$ 16,132

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

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.