Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes the assets and liabilities measured at fair value on a recurring basis at March 31, 2019 (in thousands):

Description	March 31, 2019		Active Markets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	$	42,437	$	42,437	$	—	$	—
Restricted cash	20		20		—		—
Total assets	$	42,457	$	42,457	$	—	$	—
Liabilities:
Contingent consideration	47,400		—		—		47,400
Total liabilities	$	47,400	$	—	$	—	$	47,400

The following table summarizes the assets and liabilities measured at fair value on a recurring basis at December 31, 2018 (in thousands):

Description	December 31, 2018		Active Markets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	$	50,422	$	50,422	$	—	$	—
Restricted cash	20		20		—		—
Total assets	$	50,442	$	50,442	$	—	$	—
Liabilities:
Contingent consideration	48,400		—		—		48,400
Total liabilities	$	48,400	$	—	$	—	$	48,400

Summary of Contingent Consideration Obligations

The following table sets forth a summary of changes in the fair value of the Company's contingent consideration liability (in thousands):

Beginning balance, December 31, 2018	$	48,400
Gain from change in fair value of contingent consideration	(1,000		)
Ending balance, March 31, 2019	$	47,400