Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The following table summarizes the changes in the carrying amount of goodwill for the periods indicated (in thousands):



	Year Ended December 31,
	2019			2018
Balance as of the beginning of the period	$	37,482		$	38,541
Business combination	101,703			—
Foreign currency translation adjustments	(454		)	(1,059		)
Balance as of the end of the period	$	138,731		$	37,482

Schedule of Finite-Lived Intangible Assets

At December 31, 2019 and 2018, the gross book value and accumulated amortization of intangible assets were as follows (in thousands):



	As of December 31, 2019										As of December 31, 2018
	Gross book value		Accumulated amortization			Foreign currency translation			Net book value		Gross book value		Accumulated amortization			Foreign currency translation			Net book value
Customer relationships	$	93,500	$	(2,338	)	$	—		$	91,162	$	—	$	—		$	—		$	—
Trademark	79,400		(1,985		)	—			77,415		—		—			—			—
Referral agreement	37,127		(5,417		)	(1,356		)	30,354		35,323		(1,890		)	(712		)	32,721
Technology	7,200		(7,200		)	—			—		7,200		(5,500		)	—			1,700
Patent licenses	332		(27		)	—			305		172		(4		)	—			168
Intangible assets, net	$	217,559	$	(16,967	)	$	(1,356	)	$	199,236	$	42,695	$	(7,394	)	$	(712	)	$	34,589

Schedule of Future Amortization Expense

Based on amounts recorded at December 31, 2019, the Company estimates intangible asset amortization expense in each of the years ending December 31 as follows (in thousands):



2020	$	15,148
2021	15,148
2022	15,148
2023	15,148
2024	15,148
Thereafter	123,496
Total amortization expense	$	199,236