Goodwill and Other Intangible Assets (Goodwill) (Narrative) (Details) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2019 USD ($) Segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Goodwill [Line Items]
Number of reportable segments | Segment										8
Impairment of Long-Lived Assets	$ 8,087	$ 372	$ 693	$ 0	$ 0	$ 8,109	$ 0	$ 0		$ 9,152	$ 8,109	$ 9,614
Forney [Member] | Manufacturing [Member]
Goodwill [Line Items]
Impairment of Long-Lived Assets									$ 8,600