CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Accounts receivable, allowance for credit losses	$ 42,615	$ 34,441
PROPERTY, EQUIPMENT AND FACILITIES - accumulated depreciation and amortization	141,271	140,161
OTHER ASSETS:
Noncurrent receivables, allowance for credit losses	$ 22,957	$ 19,370
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)	31,462,640	31,359,110
Common stock, shares outstanding (in shares)	31,462,640	31,359,110
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