Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

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 June 30, 2018 (in thousands):

Description	June 30, 2018		Active Markets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	$	62,961	$	62,961	$	—	$	—
Restricted cash	20		20		—		—
Total assets	$	62,981	$	62,981	$	—	$	—
Liabilities:
Contingent consideration	42,300		—		—		42,300
Total liabilities	$	42,300	$	—	$	—	$	42,300

The following table summarizes the assets and liabilities measured at fair value on a recurring basis at December 31, 2017 (in thousands):

Description	December 31, 2017		Active Markets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	$	14,680	$	14,680	$	—	$	—
Restricted cash	10		10		—		—
Total assets	$	14,690	$	14,690	$	—	$	—
Liabilities:
Contingent consideration	39,600		—		—		39,600
Total liabilities	$	39,600	$	—	$	—	$	39,600

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, 2017	$	39,600
Loss from change in fair value of contingent consideration	2,700
Ending balance, June 30, 2018	$	42,300