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Intangible Assets and Goodwill (Tables)
 12 Months Ended
Dec. 31, 2020
Intangible Assets and Goodwill [Abstract]  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
The components of intangible assets as of December 31, 2019 were as follows:
December 31, 2019
(in thousands)Gross Carrying AmountAccumulated AmortizationNet Carrying Amount
Finite-lived intangible assets:
Customer relationships 1, 3
$4,045 $(884)$3,161 
Acquired technology 1, 2, 4
11,500 (1,741)9,759 
Acquired trademarks 1
570 (304)266 
Total 5
$16,115 $(2,929)$13,186 
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1 The Company acquired certain intangible assets as part of its acquisition of LENSAR in May 2017. These assets were being amortized on a straight-line basis over a weighted-average period of 15 years. The intangible assets for customer relationships were being amortized using a double-declining method of amortization as such method better represents the economic benefits to be obtained.
2 The Company acquired certain intangible assets as part of the foreclosure on certain of Direct Flow Medical assets. In August 2019, the Company sold the DFM, LLC intangible assets for $5.0 million in cash and a single-digit percentage of any net final award received as part of the acquirer’s monetization process using the intangible assets. Prior to the sale, these intangible assets were being amortized on a straight-line basis over a weighted-average period of 10 years.
3 LENSAR acquired certain intangible assets for customer relationships from Precision Eye Services, which were being amortized using a double-declining method over a period of 20 years.
4 LENSAR acquired certain intangible assets from a third-party in 2019, which were being amortized on a straight-line basis over a period of 15 years.
5  The Company acquired certain intangible assets as part of the Noden transaction. Those intangible assets are excluded from the table above and included in “Assets held for sale” as of December 31, 2019. See Note 4, Discontinued Operations Classified as Assets Held for Sale, for additional information.