UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 19,181	$ 13,261
Adjustments to reconcile net income to cash provided by operating activities:
Deferred income tax provision, net	8,321	931
Provision for credit losses	172	(852)
Depreciation and amortization	1,093	1,202
Stock-based compensation expense	4,437	3,403
Defined benefit pension plan expense	0	252
Loss on disposal or impairment of assets	168	0
Noncash lease expense	1,502	1,114
Loss on equity method investment	825	491
Other	190	242
Increase in operating assets
Trade receivables, net	(12,914)	(15,001)
Other assets	(2,577)	(324)
Increase in operating liabilities
Accrued payroll costs	15,447	12,203
Other liabilities	2,897	5,504
Cash provided by operating activities	38,742	22,426
Cash flows from investing activities:
Capital expenditures	(2,221)	(1,350)
Contributions to equity method investment	(500)	(2,000)
Cash used in investing activities	(2,721)	(3,350)
Cash flows from financing activities:
Repurchases of common stock	(10,270)	(16,313)
Cash dividends	(6,094)	(4,786)
Payments on other financing arrangements	(19)	(122)
Cash used in financing activities	(16,383)	(21,221)
Change in cash and cash equivalents	19,638	(2,145)
Cash and cash equivalents, beginning of period	96,989	103,486	$ 103,486
Cash and cash equivalents, end of period	116,627	101,341	$ 96,989
Cash Paid During the Period For:
Income taxes	314	332
Operating lease liabilities	1,812	1,690
Interest, net	547	634
Non-Cash Investing and Financing Transactions:
ROU assets obtained from operating leases	446	243
Employee stock purchase plan	$ 242	$ 170