Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income	$ 17,433	$ 16,565
Reconciliations of net income to net cash used by operating activities:
Depreciation and amortization	3,996	3,764
Non-cash operating lease expense	3,304	3,308
Net investment amortization (accretion) and losses (gains) recognized	137	(498)
Losses recognized on sale of property	16
Deferred Income taxes	22
Share-based compensation	4,923	4,293
Changes in certain operating assets and liabilities:
Trade accounts receivable	(29,642)	(40,158)
Income taxes	2,986	6,803
Prepaid expenses and other	(7,071)	984
Accounts payable	(1,854)	(2,197)
Accrued payroll and related benefits	24,232	30,146
Payroll taxes payable	(8,659)	(13,370)
Other accrued liabilities	370	(434)
Premium payable	(41,169)	(29,827)
Workers' compensation claims liabilities	(14,449)	(18,265)
Operating lease liabilities	(3,254)	(3,436)
Other assets and liabilities, net	74	(31)
Net cash used by operating activities	(48,605)	(42,353)
Cash flows from investing activities:
Purchase of property, equipment and software	(8,926)	(7,709)
Purchase of investments	(7,669)
Proceeds from sales and maturities of investments	13,139	10,607
Purchase of restricted investments	(35,126)	(7,650)
Proceeds from sales and maturities of restricted investments	64,699	61,758
Net cash provided by investing activities	26,117	57,006
Cash flows from financing activities:
Proceeds from credit-line borrowings	4,508	415
Payments on credit-line borrowings	(4,508)	(415)
Repurchases of common stock	(17,290)	(14,103)
Common stock repurchased on vesting of restricted stock units and performance awards	(2,342)	(1,853)
Dividends paid	(4,107)	(3,925)
Proceeds from exercise of stock options and purchase of ESPP shares	816	383
Net cash used in financing activities	(22,923)	(19,498)
Net decrease in cash, cash equivalents and restricted cash	(45,411)	(4,845)
Cash, cash equivalents and restricted cash, beginning of period	82,588	74,841
Cash, cash equivalents and restricted cash, end of period	$ 37,177	$ 69,996