Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Notes To Financial Statements [Abstract]

Summary of Goodwill by Reportable Segment

The change in the carrying value of goodwill for the three months ended March 31, 2020, all attributable to our Clear Aligner reporting unit, is as follows (in thousands):


	Total
Balance as of December 31, 2019	$	63,924

Adjustments¹	(640)
Balance as of March 31, 2020	$	63,284

¹Adjustments were related to foreign currency translation within the measurement period.

Schedule of Amortized Intangible Assets

Acquired intangible long-lived assets are being amortized as follows (in thousands):


	Weighted Average Amortization Period (in years)	Gross Carrying Amount as of March 31, 2020		Accumulated Amortization		Accumulated Impairment Loss		Net Carrying Value as of March 31, 2020
Trademarks	15	$	7,100	$	(2,080)	$	(4,179)	$	841
Existing technology	13	12,600		(5,972)		(4,328)		2,300
Customer relationships	11	33,500		(18,870)		(10,751)		3,879
Reacquired rights	3	7,500		(7,500)		—		—
Patents	8	6,796		(3,377)		—		3,419
Other	2	618		(590)		—		28
Total intangible assets		$	68,114	$	(38,389)	$	(19,258)	$	10,467


	Weighted Average Amortization Period (in years)	Gross Carrying Amount as of December 31, 2019		Accumulated Amortization		Accumulated Impairment Loss		Net Carrying Value as of December 31, 2019
Trademarks	15	$	7,100	$	(2,045)	$	(4,179)	$	876
Existing technology	13	12,600		(5,831)		(4,328)		2,441
Customer relationships	11	33,500		(18,405)		(10,751)		4,344
Reacquired rights	3	7,500		(7,059)		—		441
Patents	8	6,796		(3,165)		—		3,631
Other	2	618		(583)		—		35
Total intangible assets		$	68,114	$	(37,088)	$	(19,258)	$	11,768

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The total estimated annual future amortization expense for these acquired intangible assets as of March 31, 2020 is as follows (in thousands):


Fiscal Year Ending December 31,	Amortization
Remainder of 2020	$	2,544
2021	3,372
2022	2,116
2023	1,495
2024	555
Thereafter	385
Total	$	10,467