Summary Stockholders' Equity

9 Months Ended

Sep. 30, 2015

Stockholders' Equity

Stockholders' Equity

9. Summary Stockholders’ Equity

The following summary table provides details related to the activity in certain captions within Stockholders’ Equity for the nine month period ended September 30, 2015, in thousands.

	Common Stock		Additional Paid-in Capital
	(unaudited)
Balance, December 31, 2014	$	43	$	230,122
Share-based compensation	—		3,152
Issuance of ESPP shares	—		324
Exercise of stock options	—		743
Equity issued on note conversion	6		26,013
Exercise of warrants	—		652
Balance, September 30, 2015	$	49	$	261,006