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Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
ASSETS    
Cash and cash equivalents $ 22,388 $ 18,596
Short-term investments 3,938 4,139
Accounts receivable, net 236,717 230,388
Prepaid expenses 4,998 6,305
Deferred income taxes 86,541 70,314
Other assets 6,683 7,531
Total current assets 361,265 337,273
Investments 43,568 44,991
Property and equipment, net 59,571 60,530
Goodwill 1,771,340 1,746,762
Other assets, net 89,293 83,092
Total assets 2,325,037 2,272,648
LIABILITIES AND SHAREHOLDERS' EQUITY    
Accounts payable and accrued expenses 122,960 234,535
Current portion of long-term capital lease obligations 121 143
Income taxes payable 49,787 19,623
Total current liabilities 172,868 254,301
Line of credit 83,500 29,000
Long-term capital lease obligations 306 327
Long-term professional liabilities 112,563 109,629
Deferred income taxes 98,922 93,831
Other liabilities 59,065 54,544
Total liabilities 527,224 541,632
Commitments and contingencies      
Shareholders' equity:    
Preferred stock; $.01 par value; 1,000 shares authorized; none issued      
Common stock; $.01 par value; 100,000 shares authorized; 49,161 and 48,933 shares issued and outstanding, respectively 492 489
Additional paid-in capital 743,090 724,646
Retained earnings 1,054,231 1,005,881
Total shareholders' equity 1,797,813 1,731,016
Total liabilities and shareholders' equity $ 2,325,037 $ 2,272,648