RESTRUCTURING (Tables)

6 Months Ended

Jun. 30, 2017

Restructuring And Related Activities [Abstract]

Summary of Restructuring Expenses by Function

The following table summarizes the restructuring expenses by function for the periods indicated:

	For the Three Months Ended June 30, 2017						For the Three Months Ended June 30, 2016
	(in thousands)
	Cash		Non-cash		Total		Cash		Non-cash		Total
Research and development	$	104	$	—	$	104	$	463	$	48	$	511
Selling, general and administrative		2,420		—		2,420		73		42		115
Total restructuring expenses	$	2,524	$	—	$	2,524	$	536	$	90	$	626

	For the Six Months Ended June 30, 2017						For the Six Months Ended June 30, 2016
	(in thousands)
	Cash		Non-cash		Total		Cash		Non-cash		Total
Research and development	$	174	$	—	$	174	$	820	$	193	$	1,013
Selling, general and administrative		2,586		—		2,586		104		42		146
Total restructuring expenses	$	2,760	$	—	$	2,760	$	924	$	235	$	1,159

Summary of Restructuring Reserve

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

	As of June 30, 2017			As of December 31, 2016
	(in thousands)
Restructuring reserve beginning balance	$	1,588		$	—
Restructuring expenses incurred during the period		2,760			3,651
Amounts paid during the period		(850	)		(2,063	)
Restructuring reserve ending balance	$	3,498		$	1,588