Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 08, 2016
Goodwill [Line Items]
Goodwill	$ 69,727	$ 69,727
Accumulated impairment	51,900	51,900
Amortization expense related to intangible assets	$ 25,300	$ 25,200	$ 26,500
Array
Goodwill [Line Items]
Goodwill				$ 121,600