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Restructuring and Asset Impairment Charges - Summary (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Restructuring Reserve [Roll Forward]                      
   Beginning balance       $ 1,843       $ 107 $ 1,843 $ 107 $ 189
      Employee separation charges (recoveries)                 4,592 4,055 (22)
   Total employee separation and other cash charges (recoveries)                 4,592 4,055 (22)
   Payments                 (6,028) (2,319) (60)
   Ending balance $ 407       $ 1,843       407 1,843 107
   Asset impairment and other noncash charges                 1,054 891 404
Total restructuring and asset impairment charges $ 4,754 $ 672 $ 8 $ 212 $ 1,556 $ 1,667 $ 182 $ 1,541 $ 5,646 $ 4,946 $ 382