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Summary of Significant Accounting Policies - Contract Fulfillment Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Intake Costs asset
Contract With Customer, Asset And Liabilities [Line Items]
GROSS CARRYING AMOUNT	$ 71,731	$ 71,336
ACCUMULATED AMORTIZATION	(45,432)	(42,678)
NET CARRYING AMOUNT	26,299	28,658
Commissions asset
Contract With Customer, Asset And Liabilities [Line Items]
GROSS CARRYING AMOUNT	121,501	114,791
ACCUMULATED AMORTIZATION	(54,356)	(50,553)
NET CARRYING AMOUNT	$ 67,145	$ 64,238

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Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer, when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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