RESTRUCTURING (Tables)

9 Months Ended

Sep. 30, 2017

Restructuring And Related Activities [Abstract]

Summary of Restructuring Expenses by Function

The following tables summarize the restructuring expenses by function for the periods indicated:

	For the Three Months Ended September 30, 2017						For the Three Months Ended September 30, 2016
	(in thousands)
	Cash		Non-cash		Total		Cash		Non-cash		Total
Research and development	$	10	$	—	$	10	$	628	$	143	$	771
Selling, general and administrative		3		—		3		367		126		493
Total restructuring expenses	$	13	$	—	$	13	$	995	$	269	$	1,264

	For the Nine Months Ended September 30, 2017						For the Nine Months Ended September 30, 2016
	(in thousands)
	Cash		Non-cash		Total		Cash		Non-cash		Total
Research and development	$	184	$	—	$	184	$	1,448	$	336	$	1,784
Selling, general and administrative		2,589		—		2,589		471		168		639
Total restructuring expenses	$	2,773	$	—	$	2,773	$	1,919	$	504	$	2,423

Summary of Restructuring Reserve

The following table summarizes the restructuring reserve for the periods indicated:

	As of September 30, 2017			As of December 31, 2016
	(in thousands)
Restructuring reserve beginning balance	$	1,588		$	—
Restructuring expenses incurred during the period		2,773			3,651
Amounts paid during the period		(1,318	)		(2,063	)
Restructuring reserve ending balance	$	3,043		$	1,588