Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Details)

v3.20.1
Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 462,124 $ 461,799
Accumulated Amortization (380,601) (374,471)
Net Book Value 81,523 87,328
Developed technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 299,242 299,100
Accumulated Amortization (256,077) (252,136)
Net Book Value 43,165 46,964
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 15,552 15,142
Accumulated Amortization (7,421) (7,067)
Net Book Value 8,131 8,075
Trademarks and trade names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 25,994 25,991
Accumulated Amortization (20,256) (19,966)
Net Book Value 5,738 6,025
Customer relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 102,847 102,936
Accumulated Amortization (78,358) (76,813)
Net Book Value 24,489 26,123
Capitalized software development costs [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 18,489 18,630
Accumulated Amortization (18,489) (18,489)
Net Book Value $ 141