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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]  
Schedule of Balances by Type of Long-Lived Assets The balances by type were as follows at December 31:
 20222021
(In thousands)CostAccumulated
Depreciation/
Amortization
CostAccumulated
Depreciation/
Amortization
Furniture and fixtures$2,809 $(2,249)$2,321 $(2,143)
Office equipment1,012 (894)906 (842)
Computer hardware11,125 (10,607)10,666 (9,962)
Purchased software39,015 (38,358)38,466 (38,046)
Costs of internal-use software14,683 (11,332)12,500 (10,028)
Leasehold improvements5,171 (3,912)4,987 (3,319)
Total$73,815 $(67,352)$69,846 $(64,340)