Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 126,213	$ 126,983
Accumulated Amortization	93,141	90,533
Net Carrying Amount	33,072	36,450
Intangible assets, gross carrying amount	131,313	132,083
Intangible assets, Net Carrying Amount	38,172	41,550
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, non-amortizing intangible assets	5,100	5,100
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	111,426	111,556
Accumulated Amortization	87,356	85,180
Net Carrying Amount	24,070	26,376
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,329	11,809
Accumulated Amortization	3,212	2,768
Net Carrying Amount	8,117	9,041
Acquired software and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,458	3,618
Accumulated Amortization	2,573	2,585
Net Carrying Amount	$ 885	$ 1,033