Stock Based Compensation and Restricted Stock Compensation (Tables)

6 Months Ended

Jun. 30, 2016

The following table summarizes stock-based compensation for the three and six months ended June 30, 2016 and 2015:

	Three months ended June 30,				Six months ended June 30,
	2016		2015		2016		2015
Research and development	$	314,000	$	86,000	$	664,000	$	104,000
Selling, general and administrative		1,071,000		818,000		2,313,000		1,024,000
Stock-based compensation expense included in operating expense	$	1,385,000	$	904,000	$	2,977,000	$	1,128,000

The following table summarizes restricted stock compensation expense for the three and six months ended June 30, 2016 and 2015:

	Three months ended June 30,				Six months ended June 30,
	2016		2015		2016		2015
Research and development	$	62,000	$	75,000	$	200,000	$	91,000
Selling, general and administrative		925,000		961,000		2,679,000		977,000
Restricted stock compensation expense included in operating expense	$	987,000	$	1,036,000	$	2,879,000	$	1,068,000