Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 consisted of the following:

	March 31, 2020
	Total  fair value		Quoted price in active markets for identical assets  (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs  (Level 3)
Liabilities
Bookings Commitment	$	18,854	$	—	$	—	$	18,854
Interest make-whole derivative	5		—		—		5

	December 31, 2019
	Total  fair value		Quoted price in active markets for identical assets  (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs  (Level 3)
Liabilities
Bookings Commitment	$	21,983	$	—	$	—	$	21,983
Interest make-whole derivative	—		—		—		—

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables set forth a summary of changes in the fair value of Level 3 liabilities for the three months ended March 31, 2020:

	December 31, 2019		Additions		Change in fair value			March 31, 2020
Liabilities
Interest make-whole derivative - related party and others	$	—	$	—	$	5		$	5
Bookings Commitment	21,983		—		(3,129		)	18,854
	$	21,983	$	—	$	(3,124	)	$	18,859

Fair Value of Convertible Notes held at amortized cost

As of March 31, 2020 and December 31, 2019, the fair value and carrying value of the Company's Convertible Notes were:

	Fair Value		Carrying Value		Face Value
5.5% convertible senior notes due December 15, 2021:
Balance as of March 31, 2020
Related party	$	8,906	$	8,994	$	10,000
Others	86,388		86,060		97,000
	$	95,294	$	95,054	$	107,000
Balance as of December 31, 2019
Related party	$	6,727	$	8,864	$	10,000
Others	65,257		84,648		97,000
	$	71,984	$	93,512	$	107,000