Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 59,966	$ 38,081
Accounts receivable less allowances of $11,414 (2011 - $11,524)	81,811	77,924
Inventories - net	8,146	8,668
Current deferred income taxes	13,226	12,540
Prepaid income taxes	4,187	2,131
Prepaid expenses	10,737	11,409
Total current assets	178,073	150,753
Investments of deferred compensation plans	33,215	31,629
Properties and equipment, at cost, less accumulated depreciation of $155,406 (2011- $146,709)	88,571	82,951
Identifiable intangible assets less accumulated amortization of $29,654 (2011 - $28,904)	57,635	58,262
Goodwill	461,965	460,633
Other assets	11,669	11,677
Total Assets	831,128	795,905
LIABILITIES
Accounts payable	51,002	48,225
Income taxes	167	90
Accrued insurance	36,786	37,147
Accrued compensation	39,729	41,087
Other current liabilities	14,906	18,851
Total current liabilities	142,590	145,400
Deferred income taxes	25,257	29,463
Long-term debt	170,769	166,784
Deferred compensation liabilities	33,149	30,693
Other liabilities	11,918	9,881
Total Liabilities	383,683	382,221
STOCKHOLDERS' EQUITY
Capital stock - authorized 80,000,000 shares $1 par; issued 31,142,442 shares (2011 - 30,936,925 shares)	31,142	30,937
Paid-in capital	410,957	398,094
Retained earnings	582,316	546,757
Treasury stock - 12,141,664 shares (2011 - 11,880,051)	(579,013)	(564,091)
Deferred compensation payable in Company stock	2,043	1,987
Total Stockholders' Equity	447,445	413,684
Total Liabilities and Stockholders' Equity	$ 831,128	$ 795,905