UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 13,261	$ 9,106
Adjustments to reconcile net income to cash provided by operating activities:
Deferred income tax provision, net	931	(126)
Provision for credit losses	(852)	2,229
Depreciation and amortization	1,202	1,393
Stock-based compensation expense	3,403	2,896
Defined benefit pension plan expense	252	211
Noncash lease expense	1,114	1,521
Loss on equity method investment	491	595
Other	242	141
Increase in operating assets
Trade receivables, net	(15,001)	(20,176)
Other assets	(324)	(452)
Increase in operating liabilities
Accrued payroll costs	12,203	2,129
Other liabilities	5,504	3,538
Cash provided by operating activities	22,426	3,005
Cash flows from investing activities:
Capital expenditures	(1,350)	(1,971)
Equity method investment	(2,000)	0
Cash used in investing activities	(3,350)	(1,971)
Cash flows from financing activities:
Proceeds from credit facility	0	35,000
Repurchases of common stock	(16,313)	(19,470)
Cash dividends	(4,786)	(4,293)
Payments on other financing arrangements	(122)	(328)
Cash (used in) provided by financing activities	(21,221)	10,909
Change in cash and cash equivalents	(2,145)	11,943
Cash and cash equivalents, beginning of period	103,486	19,831	$ 19,831
Cash and cash equivalents, end of period	101,341	31,774	$ 103,486
Cash Paid During the Period For:
Income taxes	332	399
Operating lease liabilities	1,690	1,987
Interest, net	634	541
Non-Cash Investing and Financing Transactions:
ROU assets obtained from operating leases	243	924
Employee stock purchase plan	170	142
Unsettled repurchases of common stock	$ 0	$ 910