RESTRUCTURING (Tables)

9 Months Ended

Sep. 30, 2016

Restructuring And Related Activities [Abstract]

Summary of Restructuring Costs by Function

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

	For the Three Months Ended September 30, 2016						For the Nine Months Ended September 30, 2016
	(in thousands)
	Cash		Non-cash (1)		Total		Cash		Non-cash (2)		Total
Research and development	$	628	$	143	$	771	$	1,448	$	336	$	1,784
General and administration		367		126		493		471		168		639
Total restructuring expenses	$	995	$	269	$	1,264	$	1,919	$	504	$	2,423

(1) The non-cash restructuring expense relates to accelerated depreciation for certain assets.

(2) The non-cash restructuring expense relates to acceleration of stock option vesting and accelerated depreciation for certain assets.

Summary of Restructuring Reserve

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

	For the Three Months Ended September 30, 2016			For the Nine Months Ended September 30, 2016
	(in thousands)
Restructuring reserve beginning balance	$	371		$	—
Restructuring expenses incurred during the period		990			1,919
Adjustments to prior period estimates, net		5			—
Amounts paid during the period		(458	)		(1,011	)
Restructuring reserve ending balance	$	908		$	908