Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of financial assets and liabilities subject to fair value measurements


	As of
	June 30, 2018		Level 1		Level 2		Level 3
	(In thousands)
Assets:
Money market funds and cash equivalents	$	28,986		—	$	28,986		—
Marketable securities		70,115		—		70,115		—
	$	99,101		—	$	99,101		—

Liabilities:
Kolltan acquisition contingent consideration	$	22,367		—		—	$	22,367
	$	22,367		—		—	$	22,367


	As of
	December 31, 2017		Level 1		Level 2		Level 3
	(In thousands)
Assets:
Money market funds and cash equivalents	$	24,061		—	$	24,061		—
Marketable securities		99,139		—		99,139		—
	$	123,200		—	$	123,200		—

Liabilities:
Kolltan acquisition contingent consideration	$	43,400		—		—	$	43,400
	$	43,400		—		—	$	43,400

Schedule of the Company's contingent consideration liabilities measured at fair value using Level 3 inputs

The following table reflects the activity for the Company’s contingent consideration liabilities measured at fair value using Level 3 inputs for the six months ended June 30, 2018 (in thousands):


	Other Liabilities:
	Contingent
	Consideration
Balance at December 31, 2017	$	43,400
Fair value adjustments included in operating expenses		(21,033)
Balance at June 30, 2018	$	22,367