CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 61,075	$ 75,431	$ 75,177
Adjustments to reconcile net income to cash provided by operating activities:
Reserve related to note receivable	0	1,925	0
Impairment of equity method investment	0	13,684	0
Deferred income tax provision, net	1,647	3,081	2,425
Provision for credit losses	768	(126)	11
Depreciation and amortization	5,012	4,427	4,500
Stock-based compensation expense	17,747	17,655	13,999
Noncash lease expense	4,065	5,683	5,509
Loss on equity method investment	750	3,824	2,480
Defined benefit pension plans expense	0	0	2,157
Other	724	141	(893)
(Increase) decrease in operating assets
Trade receivables, net	35,301	(4,049)	(36,960)
Increase (Decrease) in Other Operating Assets	(1,304)	(9,199)	(9,779)
Increase (decrease) in operating liabilities
Accrued payroll costs	(13,358)	(22,003)	6,337
Payment of benefit under terminated pension plan	0	(19,965)	0
Other liabilities	(20,962)	20,296	7,935
Cash provided by operating activities	91,465	90,805	72,898
Cash flows from investing activities:
Capital expenditures	(7,763)	(8,109)	(6,441)
Proceeds from Divestiture of Interest in Joint Venture	5,059	0	0
Payments for (Proceeds from) Life Insurance Policies	(1,408)	1,077	0
Equity method investment	0	(500)	(9,000)
Note receivable issued to our joint venture	(750)	(6,750)	0
Net proceeds from the sale of assets held for sale	0	0	23,742
Cash (used in) provided by investing activities	(4,862)	(14,282)	8,301
Cash flows from financing activities:
Proceeds from credit facility	594,400	38,200	0
Payments on credit facility	(578,400)	(112,600)	0
Repurchases of common stock	(75,024)	(74,913)	(66,210)
Cash dividends	(27,562)	(24,027)	(20,120)
Other	(19)	(51)	(1,366)
Cash used in financing activities	(86,605)	(173,391)	(87,696)
Change in cash and cash equivalents	(2)	(96,868)	(6,497)
Cash and cash equivalents at beginning of year	121	96,989	103,486
Cash and cash equivalents at end of year	119	121	96,989
Cash paid during the year for:
Income taxes	28,616	16,579	24,277
Operating lease liabilities	5,232	6,992	7,468
Interest, net	897	885	2,453
Non-Cash Financing and Investing Transactions:
ROU assets obtained from operating leases	4,378	9,997	5,098
Unsettled repurchases of common stock	920	974	181
Employee stock purchase plan	$ 1,042	$ 1,054	$ 762