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Business Combinations - Narrative (Details) $ in Thousands	Dec. 18, 2020 USD ($) individual plan client	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Combinations
Goodwill		$ 30,201	$ 27,329
Retirement Planning Services, Inc
Business Combinations
Total purchase price	$ 13,400
Cash consideration	9,792
Earn out liability	3,600
Other intangible assets	11,489
Goodwill	$ 2,872
Number of retirement and health benefit administration plans | plan	1,000
Number of plan participants | individual	48,000
Number of COBRA clients | client	300
Number of COBRA members acquired | individual	10,000
Assets under administration/management	$ 1,300,000

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