Segment Information - Reconciliation of Operating Profit from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	$ 287,789	$ 262,155
Net corporate interest expense	(1,519)	(1,582)
Contingent earnout adjustments	(2,056)	0
Income Before Income Taxes	7,582	8,505
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Total segment operating earnings	15,540	14,440
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Unallocated corporate and shared costs, net	(2,452)	(1,414)
Net corporate interest expense	(1,519)	(1,582)
Stock option expense	(205)	(140)
Amortization of customer-relationship intangible assets	(1,726)	(2,799)
Contingent earnout adjustments	(2,056)	0
North America Loss Adjusting
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	64,438	56,298
North America Loss Adjusting \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Total segment operating earnings	4,135	4,361
International Operations
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	89,272	86,467
International Operations \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Total segment operating earnings	(3,067)	(673)
Broadspire
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	76,454	74,276
Broadspire \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Total segment operating earnings	6,434	6,734
Platform Solutions
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	48,861	36,140
Platform Solutions \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Total segment operating earnings	8,038	4,018
Service
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	279,025	253,181
Service \| North America Loss Adjusting \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	64,438	56,298
Service \| International Operations
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	89,272	86,467
Service \| International Operations \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	89,272	86,467
Service \| Broadspire
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	76,454	74,276
Service \| Broadspire \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	76,454	74,276
Service \| Platform Solutions
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	48,861	36,140
Service \| Platform Solutions \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	48,861	36,140
Reimbursements
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated
Revenues	$ 8,764	$ 8,974

Contingent earnout adjustments.

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