Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Significant Accounting Policies [Line Items]
Contract with customer, liability	$ 9,900		$ 9,000
Revenues	$ 49,678	$ 45,441
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration]
Equipment
Significant Accounting Policies [Line Items]
Estimated useful lives of fixed assets (or lesser for Leaseholds)	5 years
Furniture and Fixtures
Significant Accounting Policies [Line Items]
Estimated useful lives of fixed assets (or lesser for Leaseholds)	7 years
Leasehold Improvements
Significant Accounting Policies [Line Items]
Estimated useful lives of fixed assets (or lesser for Leaseholds)	15 years
Minimum
Significant Accounting Policies [Line Items]
Amortization period of deferred cash retention awards	3 years
Minimum | Restricted Stock
Significant Accounting Policies [Line Items]
Amortization period of restricted stock units	3 years
Maximum
Significant Accounting Policies [Line Items]
Amortization period of deferred cash retention awards	5 years
Maximum | Restricted Stock
Significant Accounting Policies [Line Items]
Amortization period of restricted stock units	4 years
Primary Capital Advisory Engagements
Significant Accounting Policies [Line Items]
Long term receivables related to primary capital advisory engagements	$ 4,300		$ 4,100
Installments period	3 years
Reimbursement Revenue
Significant Accounting Policies [Line Items]
Revenues	$ 1,100	400
Advisory Fees
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	100	200
Capital advisory engagements
Significant Accounting Policies [Line Items]
Contract with customer, liability, revenue recognized	$ 2,700	$ 400