Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash flows provided by (used in) operating activities:
Net income	$ 2,931	$ 20,558
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in fair value of derivative instruments	7,118	(13,906)
Depreciation and amortization	3,903	5,271
Loss on redemption of debt		1,700
Provision for losses on accounts receivable	1,450	2,648
Change in deferred taxes	1,154	14,980
Changes in operating assets and liabilities
Increase in receivables	(79,111)	(115,161)
Increase in inventories	(18,883)	(10,324)
Increase in other assets	(3,202)	(7,358)
Increase in accounts payable	7,205	16,781
Decrease in customer credit balances	(5,316)	(23,134)
Increase in other current and long-term liabilities	7,986	19,235
Net cash used in operating activities	(74,765)	(88,710)
Cash flows provided by (used in) investing activities:
Capital expenditures	(1,276)	(1,558)
Proceeds from sales of fixed assets	241	14
Acquisitions	(25,863)	(1,638)
Net cash used in investing activities	(26,898)	(3,182)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings	46,834	13,076
Repayment of debt		(82,499)
Proceeds from the issuance of debt		124,188
Debt extinguishment costs		(1,409)
Distributions	(5,072)	(4,905)
Unit repurchase	(12,642)
Deferred charges	(326)	(3,817)
Net cash provided by financing activities	28,794	44,634
Net decrease in cash and cash equivalents	(72,869)	(47,258)
Cash and cash equivalents at beginning of period	86,789	61,062
Cash and cash equivalents at end of period	$ 13,920	$ 13,804