CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Accounts receivable, allowance		$ 28,560	$ 26,837
PROPERTY, EQUIPMENT AND FACILITIES - accumulated depreciation and amortization	[1]	146,367	153,335
OTHER ASSETS:
Noncurrent receivables, allowance		$ 6,810	$ 5,084
STOCKHOLDERS' EQUITY:
Common stock, par value (in dollars per share)		$ 0	$ 0
Common stock, shares authorized (in shares)		100,000,000	100,000,000
Common stock, shares issued (in shares)		31,147,925	27,000,687
Common stock, shares outstanding (in shares)		31,147,925	27,000,687
Treasury stock, shares (in shares)		0	5,910,541
Series A Convertible Preferred Stock [Member]
SERIES A CONVERTIBLE PREFERRED STOCK
Preferred stock, par value (in dollars per share)		$ 0	$ 0
Preferred stock, shares authorized (in shares)		10,000,000	10,000,000
Preferred stock, shares issued (in shares)		0	12,700
Preferred stock, shares outstanding (in shares)		0	12,700

[1] Includes net impairment charge of $0.4 million as of December 31, 2022