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Subsequent Event	9 Months Ended
	Sep. 30, 2011
Subsequent Event [Abstract]
Subsequent Event	12. Subsequent Event: On October 21, 2011, the Company entered into an amended and restated credit agreement ("Amended and Restated Line of Credit") which increased the borrowing capacity thereunder to $500 million from $350 million. The Amended and Restated Line of Credit matures on October 21, 2016. The Amended and Restated Line of Credit, which is guaranteed by substantially all of the Company's subsidiaries and affiliated professional associations and corporations, includes (1) a $50 million sub-facility for the issuance of letters of credit and (2) a $25 million sub-facility for swingline loans. The Amended and Restated Line of Credit may be increased up to $570 million, subject to the satisfaction of specified conditions. At the Company's option, borrowings under the Amended and Restated Line of Credit (other than swingline loans) bear interest at (1) the alternate base rate (defined as the highest of (i) the Wells Fargo Bank, National Association prime rate, (ii) the Federal Funds Rate plus 1/2 of 1% and (iii) one month LIBOR plus 1%) or (2) the LIBOR rate, as defined in the Amended and Restated Line of Credit, plus, an applicable margin rate ranging from 0.125% to 0.5% for alternate base rate borrowings and 1.125% to 1.5% for LIBOR rate borrowings, in each case based on the Company's consolidated leverage ratio. Swingline loans bear interest at the alternate base rate plus the applicable margin rate. The Company is subject to certain covenants and restrictions specified in the Amended and Restated Line of Credit, including covenants that require the Company to maintain a minimum fixed charge coverage ratio and not to exceed a specified consolidated leverage ratio, to comply with laws, and restrict the Company from paying dividends and making certain other distributions, as specified therein. Failure to comply with these covenants would constitute an event of default under the Amended and Restated Line of Credit, notwithstanding the Company's ability to meet its debt service obligations. The Amended and Restated Line of Credit includes various customary remedies for the lenders following an event of default.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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