RESTRUCTURING (Tables)

6 Months Ended

Jun. 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 June 30, 2016						For the Six Months Ended June 30, 2016
	(in thousands)
	Cash		Non-cash (1)		Total		Cash		Non-cash (2)		Total
Research and development	$	463	$	48	$	511	$	820	$	193	$	1,013
General and administration		73		42		115		104		42		146
Total restructuring expenses	$	536	$	90	$	626	$	924	$	235	$	1,159

(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 June 30, 2016			For the Six Months Ended June 30, 2016
	(in thousands)
Restructuring reserve beginning balance	$	388		$	—
Restructuring expenses incurred during the period		552			924
Adjustments to prior period estimates, net		(16	)		—
Amounts paid during the period		(553	)		(553	)
Restructuring reserve ending balance	$	371		$	371