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Goodwill and Intangible Assets (Notes)
9 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]
Goodwill and Intangible Assets
The following table highlights the Company’s intangible assets (amounts in thousands):
 
 
December 31, 2018
 
March 31, 2018
 
 
Carrying
Amount
 
Accumulated
Amortization
 
Net Amount
 
Carrying
Amount
 
Accumulated
Amortization
 
Net Amount
Indefinite Lived Intangible Assets:
 
 
 
 
 
 
 
 
 
 
 
 
Trademarks
 
$
15,213

 
$

 
$
15,213

 
$
15,474

 
$

 
$
15,474

Amortizing Intangibles:
 
 
 
 
 

 
 
 
 
 
 
Patents (10 - 18 years)
 
26,662

 
(11,691
)
 
14,971

 
26,662

 
(10,625
)
 
16,037

Customer relationships (10 - 21 years)
 
38,296

 
(13,310
)
 
24,986

 
40,131

 
(11,735
)
 
28,396

Other
 
222

 
(222
)
 

 
238

 
(238
)
 

Total amortizing intangibles
 
65,180

 
(25,223
)
 
39,957

 
67,031

 
(22,598
)
 
44,433

Total intangible assets
 
$
80,393

 
$
(25,223
)
 
$
55,170

 
$
82,505

 
$
(22,598
)
 
$
59,907


For each of the three months ended December 31, 2018 and 2017, amortization related to intangibles was $1.1 million, consisting of amortization related to patents of $0.4 million and amortization related to customer relationships of $0.7 million. For each of the nine months ended December 31, 2018 and 2017, amortization related to intangibles was $3.4 million consisting of amortization related to patents of $1.1 million and amortization related to customer relationships of $2.3 million.
The weighted-average useful life for patents was 15.8 years as of December 31, 2018 and March 31, 2018, respectively, and 12.3 years for customer relationships as of December 31, 2018 and March 31, 2018, respectively. Estimated amortization of intangible assets for each of the next five fiscal years is $4.5 million, and thereafter, amortization will total $17.5 million. Estimated amortization of patents for each of the next five fiscal years is $1.4 million, and thereafter, amortization will total $7.9 million. Estimated amortization of customer relationships for each of the next five fiscal years is $3.1 million, and thereafter, amortization will total $9.6 million.
There were no changes in the carrying amount of goodwill for the nine months ended December 31, 2018. The Company’s goodwill balance was $40.3 million at December 31, 2018 and March 31, 2018.