Employee Benefit Plans (Details 3) - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation in excess of plan assets, Accumulated benefit obligation	$ 9,680		$ 49,220
Accumulated benefit obligation in excess of plan assets, Fair value of plan assets	0	[1]	19,664	[1]	$ 18,510
Projected benefit obligation in excess of plan assets, Projected benefit obligation	9,680		49,220
Projected benefit obligation in excess of plan assets, Fair value of plan assets	0		19,664
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation in excess of plan assets, Accumulated benefit obligation	4,374		29,741
Accumulated benefit obligation in excess of plan assets, Fair value of plan assets	2,954	[1]	20,324	[1]	$ 19,011
Projected benefit obligation in excess of plan assets, Projected benefit obligation	6,403		38,136
Projected benefit obligation in excess of plan assets, Fair value of plan assets	$ 2,954		$ 20,324

[1] In addition to the U.S. pension plan assets, ARRIS has established two rabbi trusts to further fund the pension obligations of the Executive Chairman and certain executive officers. The obligation for the Executive Chairman was distributed in the fourth quarter of 2018. The balance in the trusts as of December 31, 2018 and 2017 are $9.7 million and $25.4 million, respectively, and are included in Investments on the Consolidated Balance Sheets.