CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 112,503	$ 95,346
Trade receivables, net of allowance for expected credit losses of $12,476 and $14,073, respectively	150,426	155,759
Financed receivables, short-term, net of allowance for expected credit losses of $1,935 and $1,768, respectively	38,599	33,618
Materials and supplies	30,859	29,745
Other current assets	35,479	34,151
Total current assets	367,866	348,619
Equipment and property, net of accumulated depreciation of $339,885 and $333,298, respectively	124,117	128,046
Goodwill	852,800	846,704
Intangible assets, net	415,249	418,748
Operating lease right-of-use assets	274,540	277,355
Financed receivables, long-term, net of allowance for expected credit losses of $3,541 and $3,200, respectively	62,962	63,523
Other assets	41,352	39,033
Total assets	2,138,886	2,122,028
LIABILITIES
Accounts payable	39,073	42,796
Accrued insurance - current	40,816	39,534
Accrued compensation and related liabilities	67,761	99,251
Unearned revenues	167,564	158,092
Operating lease liabilities - current	83,981	84,543
Current portion of long-term debt	0	15,000
Other current liabilities	68,161	54,568
Total current liabilities	467,356	493,784
Accrued insurance, less current portion	40,582	38,350
Operating lease liabilities, less current portion	194,860	196,888
Long-term debt	62,432	39,898
Other long-term accrued liabilities	85,904	85,911
Total liabilities	851,134	854,831
Commitments and contingencies (see Note 11)
STOCKHOLDERS’ EQUITY
Preferred stock, without par value; 500,000 shares authorized, zero shares issued	0	0
Common stock, par value $1 per share; 800,000,000 shares authorized, 492,787,005 and 492,447,997 shares issued and outstanding, respectively	492,787	492,448
Additional paid in capital	115,018	119,242
Accumulated other comprehensive loss	(31,303)	(31,562)
Retained earnings	711,250	687,069
Total stockholders’ equity	1,287,752	1,267,197
Total liabilities and stockholders’ equity	2,138,886	2,122,028
Customer contracts, net
ASSETS
Intangible assets, net	296,494	298,559
Trademarks & tradenames, net
ASSETS
Intangible assets, net	111,353	111,646
Other intangible assets, net
ASSETS
Intangible assets, net	$ 7,402	$ 8,543