UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 101,341	$ 103,486
Trade receivables, net of allowances of $2,216 and $3,204, respectively	244,226	228,373
Prepaid expenses and other current assets	6,904	7,033
Total current assets	352,471	338,892
Fixed assets, net	26,373	26,804
Other assets, net	79,980	77,575
Deferred tax assets, net	9,490	10,738
Goodwill	25,040	25,040
Total assets	493,354	479,049
Current liabilities:
Accounts payable and other accrued liabilities	38,382	35,533
Accrued payroll costs	77,883	65,849
Current portion of operating lease liabilities	4,487	5,520
Income taxes payable	4,622	964
Other current liabilities	198	300
Total current liabilities	125,572	108,166
Long-term debt – credit facility	100,000	100,000
Other long-term liabilities	91,126	90,948
Total liabilities	316,698	299,114
Commitments and contingencies (Note L)
Stockholders’ equity:
Preferred stock, $0.01 par; 15,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.01 par; 250,000 shares authorized, 72,615 and 72,600 issued, respectively	726	726
Additional paid-in capital	476,165	472,378
Accumulated other comprehensive loss	(3,437)	(4,423)
Retained earnings	396,849	388,645
Treasury stock, at cost; 50,740 and 50,427 shares, respectively	(693,647)	(677,391)
Total stockholders’ equity	176,656	179,935
Total liabilities and stockholders’ equity	$ 493,354	$ 479,049