Consolidated Balance Sheet (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 50,941	$ 49,917
Accounts receivable less allowances of $12,257 (2010 - $13,332)	118,281	112,999
Inventories	8,682	7,728
Current deferred income taxes	14,052	15,098
Prepaid income taxes	1,300	770
Prepaid expenses	10,344	10,285
Total current assets	203,600	196,797
Investments of deferred compensation plans	33,066	28,304
Properties and equipment, at cost, less accumulated depreciation of $142,247 (2010 - $132,696)	81,471	79,292
Identifiable intangible assets less accumulated amortization of $28,155 (2010 - $27,438)	56,358	56,410
Goodwill	460,793	458,343
Other assets	15,325	11,015
Total Assets	850,613	830,161
LIABILITIES
Accounts payable	39,459	55,829
Income taxes	2,096	1,161
Accrued insurance	35,143	36,492
Accrued compensation	43,633	39,719
Other current liabilities	14,972	16,141
Total current liabilities	135,303	149,342
Deferred income taxes	24,053	25,085
Long-term debt	162,932	159,208
Deferred compensation liabilities	32,255	27,851
Other liabilities	6,736	6,626
Total Liabilities	361,279	368,112
STOCKHOLDERS' EQUITY
Capital stock - authorized 80,000,000 shares $1 par; issued 30,906,532 shares (2010 - 30,381,863 shares)	30,907	30,382
Paid-in capital	391,507	365,007
Retained earnings	505,736	473,316
Treasury stock - 9,600,834 shares (2010 - 9,103,185 shares), at cost	(440,809)	(408,615)
Deferred compensation payable in Company stock	1,993	1,959
Total Stockholders' Equity	489,334	462,049
Total Liabilities and Stockholders' Equity	$ 850,613	$ 830,161