Consolidated Statements of Operations and Comprehensive Income (Loss) (unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue	$ 251,421,000	$ 333,995,000	$ 496,976,000	$ 642,370,000
Cost of services	91,336,000	106,013,000	182,083,000	216,532,000
Gross profit	160,085,000	227,982,000	314,893,000	425,838,000
Operating expenses:
Sales and marketing	75,683,000	91,813,000	152,026,000	185,768,000
General and administrative	53,695,000	52,650,000	101,375,000	104,844,000
Impairment charges	0	222,000	0	222,000
Total operating expenses	129,378,000	144,685,000	253,401,000	290,834,000
Operating income	30,707,000	83,297,000	61,492,000	135,004,000
Other income (expense):
Other components of net periodic pension (cost) benefit	(1,865,000)	9,153,000	(1,986,000)	9,223,000
Other income (expense)	0	2,404,000	(366,000)	8,626,000
Income before income tax benefit (expense)	12,550,000	80,202,000	26,360,000	123,334,000
Income tax benefit (expense)	3,428,000	(22,200,000)	(1,068,000)	(31,821,000)
Net income	15,978,000	58,002,000	25,292,000	91,513,000
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	(302,000)	(10,139,000)	(2,490,000)	(4,691,000)
Comprehensive income	$ 15,676,000	$ 47,863,000	$ 22,802,000	$ 86,822,000
Net income per common share:
Basic (in dollars per share)	$ 0.46	$ 1.69	$ 0.73	$ 2.68
Diluted (in dollars per share)	$ 0.43	$ 1.61	$ 0.68	$ 2.47
Weighted-average shares used in computing basic and diluted net income per common share:
Basic (in shares)	34,575,338	34,250,706	34,625,561	34,205,593
Diluted (in shares)	36,863,295	36,137,989	36,956,933	37,048,087
Nonrelated Party
Other income (expense):
Interest expense	$ (16,292,000)	$ (13,756,000)	$ (32,780,000)	$ (26,864,000)
Related Party
Other income (expense):
Interest expense	$ 0	$ (896,000)	$ 0	$ (2,655,000)