CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Cash flows provided by (used in) operating activities:
Net income		$ 2,315	$ 30,182
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in the fair value of derivative instruments	[1]	31,039	(11,400)
Depreciation and amortization		8,004	8,050
Provision for losses on accounts receivable		1,529	311
Change in deferred taxes		(616)	(2,740)
Changes in operating assets and liabilities:
Increase in receivables		(95,743)	(96,193)
Increase in inventories		(20,187)	(11,886)
Increase in other assets		(3,235)	(12,411)
Increase in accounts payable		8,206	27,158
Decrease in customer credit balances		(14,120)	(14,294)
Increase in other current and long-term liabilities		19,917	19,987
Net cash used in operating activities		(62,891)	(63,236)
Cash flows provided by (used in) investing activities:
Capital expenditures		(4,025)	(3,604)
Proceeds from sales of fixed assets		644	88
Purchase of investments	[2]	(4,456)	(34,151)
Acquisitions		(275)	(224)
Net cash used in investing activities		(8,112)	(37,891)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings		92,500	79,149
Term loan repayments			(2,500)
Distributions		(6,413)	(6,302)
Unit repurchases		(5,735)
Customer retainage payments		(57)	(539)
Payments of debt issue costs		(34)
Net cash provided by financing activities		80,261	69,808
Net increase (decrease) in cash, cash equivalents, and restricted cash		9,258	(31,319)
Cash, cash equivalents, and restricted cash at beginning of period		14,781	52,708
Cash, cash equivalents, and restricted cash at end of period		$ 24,039	$ 21,389

[1] Represents the change in value of unrealized open positions and expired options.

[2] See Note 2 – Investments.