Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Balance sheet for insurance related receivables and payables
Prepaid expenses and other current assets	$ 26,848	$ 26,654
Total current assets	301,519	303,775
Total assets	639,347	630,487
Accrued expenses and other current liabilities	78,518	80,786
Total current liabilities	228,329	210,794
Total liabilities and partners' capital	639,347	630,487
Adjustment [Member]
Balance sheet for insurance related receivables and payables
Prepaid expenses and other current assets		4,358
Total current assets		4,358
Total assets		4,358
Accrued expenses and other current liabilities		4,358
Total current liabilities		4,358
Total liabilities and partners' capital		4,358
Previously Reported [Member]
Balance sheet for insurance related receivables and payables
Prepaid expenses and other current assets		22,296
Total current assets		299,417
Total assets		626,129
Accrued expenses and other current liabilities		76,428
Total current liabilities		206,436
Total liabilities and partners' capital		$ 626,129