CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 98,477	$ 94,276
Trade receivables, net of allowance for expected credit losses of $16,854 and $16,699, respectively	126,337	122,766
Financed receivables, short-term, net of allowance for expected credit losses of $1,297 and $1,675, respectively	23,716	22,267
Materials and supplies	30,843	19,476
Other current assets	35,404	51,002
Total current assets	314,777	309,787
Equipment and property, net	178,052	195,533
Goodwill	653,176	572,847
Customer contracts, net	298,949	273,720
Trademarks and tradenames, net	109,044	102,539
Other intangible assets, net	10,777	10,525
Operating lease, right-of-use assets, net	212,342	200,727
Financed receivables, long-term, net of allowance for expected credit losses of $1,934 and $1,284 respectively	38,187	30,792
Benefit plan assets	1,198	21,565
Deferred income taxes	2,222	2,180
Other assets	27,176	24,161
Total assets	1,845,900	1,744,376
LIABILITIES
Accounts payable	64,596	35,234
Accrued insurance	31,675	30,441
Accrued compensation and related liabilities	91,011	81,943
Unearned revenues	131,253	122,825
Operating lease liabilities-current	73,248	66,117
Current portion of long-term debt	17,188	12,500
Other current liabilities	63,540	60,975
Total current liabilities	472,511	410,035
Accrued insurance, less current portion	36,067	34,920
Operating lease liabilities, less current portion	140,897	135,651
Long-term debt	185,812	279,000
Deferred income tax liability	10,612	9,927
Long-term accrued liabilities	58,641	59,093
Total liabilities	904,540	928,626
STOCKHOLDERS’ EQUITY
Preferred stock, without par value; 500,000 shares authorized, zero shares issued
Common stock, par value $1 per share; 550,000,000 shares authorized, 491,612,059 and 491,146,269 shares issued and outstanding, respectively	491,612	491,146
Paid in capital	101,757	89,413
Accumulated other comprehensive loss	(10,897)	(21,109)
Retained earnings	358,888	256,300
Total stockholders’ equity	941,360	815,750
Total liabilities and stockholders’ equity	$ 1,845,900	$ 1,744,376