Accrued Expenses and Warrant Liability

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Accrued Expenses and Warrant Liability

ACCRUED EXPENSES AND WARRANT LIABILITY

Accrued expenses

The components of accrued expenses are as below:

	As of December 31,
	2017		2016
	(In thousands)
Legal - licensing & litigation	$	—	$	1,195
Compensation	1,233		560
Other	70		77
	$	1,303	$	1,832

Warrant Liability

A summary of the Company's Level 3 derivative liabilities for the twelve months ended December 31, 2017 is as follows (in thousands):

Balance, December 31, 2016	$	—
Fair value of derivative liabilities at issuance	3,313
Change in the fair value of derivative liabilities	(2,217		)
Balance, December 31, 2017	$	1,096