Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle
Provision (reversal) for expected credit losses	$ 900,000	$ (1,700,000)	$ 3,600,000
Guaranty liabilities	28,551,000	27,729,000	25,989,000
Provision (reversal) for expected credit losses	2,634,000	1,740,000	(3,600,000)
Allowance for doubtful accounts, period increase (decrease)	(1,400,000)	(4,200,000)	(3,400,000)
Allowance for doubtful accounts	19,500,000	20,900,000
Total stockholders’ equity	1,252,928,000	1,181,337,000
Allowance for credit loss	9,400,000	11,200,000
Revenues from contracts with customers	2,081,390,000	2,304,500,000	2,499,008,000
Impairment of intangible assets	$ 0	0	0
Number of operating segments | segment	1
Mortgage brokerage and debt placement
New Accounting Pronouncements or Change in Accounting Principle
Revenues from contracts with customers	$ 126,934,000	$ 173,253,000	$ 180,561,000