Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 69,296	$ 38,081
Accounts receivable less allowances of $11,782 (2011 - $11,524)	101,152	77,924
Inventories - net	7,639	8,668
Current deferred income taxes	14,118	12,540
Prepaid income taxes	3,044	2,131
Prepaid expenses	9,855	11,409
Total current assets	205,104	150,753
Investments of deferred compensation plans	35,053	31,629
Properties and equipment, at cost, less accumulated depreciation of $159,407 (2011- $146,709)	90,135	82,951
Identifiable intangible assets less accumulated amortization of $30,035 (2011 - $28,904)	57,507	58,262
Goodwill	465,861	460,633
Other assets	11,127	11,677
Total Assets	864,787	795,905
LIABILITIES
Accounts payable	44,056	48,225
Income taxes	1,496	90
Accrued insurance	39,518	37,147
Accrued compensation	44,117	41,087
Other current liabilities	18,494	18,851
Total current liabilities	147,681	145,400
Deferred income taxes	24,264	29,463
Long-term debt	172,812	166,784
Deferred compensation liabilities	34,626	30,693
Other liabilities	10,779	9,881
Total Liabilities	390,162	382,221
STOCKHOLDERS' EQUITY
Capital stock - authorized 80,000,000 shares $1 par; issued 31,450,817 shares (2011 - 30,936,925 shares)	31,451	30,937
Paid-in capital	428,232	398,094
Retained earnings	599,680	546,757
Treasury stock - 12,257,661 shares (2011 - 11,880,051)	(586,744)	(564,091)
Deferred compensation payable in Company stock	2,006	1,987
Total Stockholders' Equity	474,625	413,684
Total Liabilities and Stockholders' Equity	$ 864,787	$ 795,905