Goodwill and Long-lived Assets (Tables)

3 Months Ended

Mar. 31, 2015

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, 2015, all attributable to our Clear Aligner reporting unit, is as follows (in thousands):

	Clear Aligner
Balance as of December 31, 2014	$	61,369
Adjustments 1	(132		)
Balance as of March 31, 2015	$	61,237

Schedule Of Amortized Intangible Assets

Acquired intangible assets, arising either as a direct result from the Cadent acquisition or individually acquired, are being amortized as follows (in thousands):

	Weighted Average Amortization Period (in years)	Gross Carrying Amount as of March 31, 2015		Accumulated Amortization			Accumulated Impairment Loss			Net Carrying Value as of March 31, 2015
Trademarks	15	$	7,100	$	(1,388	)	$	(4,179	)	$	1,533
Existing technology	13	12,600		(3,155		)	(4,328		)	5,117
Customer relationships	11	33,500		(9,562		)	(10,751		)	13,187
Other	8	285		(85		)	—			200
Total Intangible Assets		$	53,485	$	(14,190	)	$	(19,258	)	$	20,037

	Weighted Average Amortization Period (in years)	Gross Carrying Amount as of December 31, 2014		Accumulated Amortization			Accumulated Impairment Loss			Net Carrying Value as of December 31, 2014
Trademarks	15	$	7,100	$	(1,354	)	$	(4,179	)	$	1,567
Existing technology	13	12,600		(3,015		)	(4,328		)	5,257
Customer relationships	11	33,500		(9,095		)	(10,751		)	13,654
Other	8	285		(76		)	—			209
Total Intangible Assets		$	53,485	$	(13,540	)	$	(19,258	)	$	20,687

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, 2015 is as follows (in thousands):

Fiscal Year Ending December 31,
Remainder of 2015	$	1,950
2016	2,600
2017	2,600
2018	2,600
2019	2,592
Thereafter	7,695
Total	$	20,037