Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 31,362	$ (24,238)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	16,159	12,319
Impairment charge	1,604	39,835
Deferred income taxes	8,348	(8,744)
Non-cash interest	451	491
Amortization of syndication contracts	357	383
Payments on syndication contracts	(354)	(325)
Non-cash stock-based compensation	3,300	2,408
(Gain) loss on disposal of property and equipment	(2,622)	(767)
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(15,894)	14,285
(Increase) decrease in prepaid expenses and other assets	2,267	6,713
Increase (decrease) in accounts payable, accrued expenses and other liabilities	8,802	(16,643)
Net cash provided by operating activities	53,780	25,717
Cash flows from investing activities:
Proceeds from sale of property and equipment and intangibles	9,431	5,089
Purchases of property and equipment	(4,269)	(7,741)
Purchases of intangible assets	0	(158)
Purchase of a businesses, net of cash acquired	(12,847)
Proceeds from marketable securities	27,800	38,480
Purchases of investments	(800)
Net cash provided by investing activities	19,315	35,670
Cash flows from financing activities:
Proceeds from stock options exercises	414
Tax payments related to shares withheld for share-based compensation plans	(528)	(15)
Payments on long-term debt	(2,250)	(2,250)
Dividends paid	(6,395)	(8,428)
Repurchase of Class A common stock		(525)
Payments of capitalized debt costs	(604)
Net cash used in financing activities	(9,363)	(11,218)
Effect of exchange rates on cash, cash equivalents and restricted cash	(3)	(7)
Net increase (decrease) in cash, cash equivalents and restricted cash	63,729	50,162
Cash, cash equivalents and restricted cash:
Beginning	119,911	33,857
Ending	183,640	84,019
Cash payments for:
Interest	4,836	6,182
Income taxes	3,554	5,549
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	824	475
Contingent consideration included in accounts payable, accrued expenses and other liabilities	$ 104,700	$ 1,641