Annual report pursuant to Section 13 and 15(d)

Nature of Operations - Narrative (Details)

v3.20.1
Nature of Operations - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenue from Major Customer [Line Items]                      
Net sales $ 141.3 $ 165.6 $ 177.7 $ 141.7 $ 153.8 $ 208.9 $ 201.2 $ 164.3 $ 626.3 $ 728.2 $ 704.1
Customer A                      
Revenue from Major Customer [Line Items]                      
Net sales                 $ 124.4