Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ 19,444	$ 31,362
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	19,212	16,159
Impairment charge		1,604
Deferred income taxes	(3,151)	8,348
Non-cash interest	1,076	451
Amortization of syndication contracts	348	357
Payments on syndication contracts	(304)	(354)
Non-cash stock-based compensation	7,995	3,300
(Gain) loss on marketable securities	473
(Gain) loss on disposal of property and equipment	(599)	(2,622)
Change in fair value of contingent consideration	6,810
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	22,296	(15,894)
(Increase) decrease in prepaid expenses and other assets	(183)	2,267
Increase (decrease) in accounts payable, accrued expenses and other liabilities	4,725	8,802
Net cash provided by operating activities	78,142	53,780
Cash flows from investing activities:
Proceeds from sale of property and equipment and intangibles	2,671	9,431
Purchases of property and equipment	(7,882)	(4,269)
Purchase of a businesses, net of cash acquired		(12,847)
Investment in variable interest entities, net of cash consolidated	(5,164)
Purchases of marketable securities	(92,480)
Proceeds from marketable securities	46,868	27,800
Purchases of investments		(800)
Net cash provided by (used in) investing activities	(55,987)	19,315
Cash flows from financing activities:
Proceeds from stock option exercises	218	414
Tax payments related to shares withheld for share-based compensation plans	(267)	(528)
Payments on long-term debt	(2,501)	(2,250)
Dividends paid	(6,415)	(6,395)
Repurchase of Class A common stock	(11,280)
Payment of contingent consideration	(65,340)
Pricipal payments under finance lease obligation	(72)
Payments of capitalized debt costs		(604)
Net cash used in financing activities	(85,657)	(9,363)
Effect of exchange rates on cash, cash equivalents and restricted cash	(1)	(3)
Net increase (decrease) in cash, cash equivalents and restricted cash	(63,503)	63,729
Cash, cash equivalents and restricted cash:
Beginning	185,843	119,911
Ending	122,340	183,640
Cash payments for:
Interest	6,149	4,836
Income taxes	11,456	3,554
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	$ 2,377	$ 824