CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 194,837	$ 142,785
Trade receivables, net of allowance for doubtful accounts of $9,073 and $11,443, respectively	101,229	88,490
Financed receivables, short-term, net of allowance for doubtful accounts of $1,586 and $1,727, respectively	16,834	15,968
Materials and supplies	15,507	13,724
Other current assets	33,219	29,204
Total Current Assets	361,626	290,171
Equipment and property, net	131,443	133,477
Goodwill	258,263	255,665
Customer contracts	113,826	117,466
Other intangible assets, net	43,171	44,310
Financed receivables, long-term, net of allowance for doubtful accounts of $1,406 and $1,430, respectively	19,467	16,748
Deferred income taxes, net	34,203	41,877
Other assets	18,527	16,824
Total Assets	980,526	916,538
LIABILITIES
Accounts payable	33,777	30,284
Accrued insurance	27,118	26,201
Accrued compensation and related liabilities	72,013	75,839
Unearned revenues	112,973	99,820
Other current liabilities	41,216	44,847
Total current liabilities	287,097	276,991
Accrued insurance, less current portion	35,023	32,023
Accrued pension	2,132	2,880
Long-term accrued liabilities	38,812	36,099
Total Liabilities	363,064	347,993
Commitments and Contingencies
STOCKHOLDERS' EQUITY
Preferred stock, without par value; 500,000 shares authorized, zero shares issued
Common stock, par value $1 per share; 375,000,000 shares authorized, 217,991,142 and 217,791,511 shares issued and outstanding, respectively	217,991	217,792
Paid in capital	75,939	77,452
Accumulated other comprehensive loss	(63,686)	(70,075)
Retained earnings	387,218	343,376
Total Stockholders' Equity	617,462	568,545
Total Liabilities and Stockholders' Equity	$ 980,526	$ 916,538

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.