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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Cash flows provided by (used in) operating activities: |  |  |
Net income |  | $ 30,182 | $ 18,275
Adjustment to reconcile net income to net cash provided by (used in) operating activities: |  |  |
(Increase) decrease in the fair value of derivative instruments | [1] | (11,400) | (8,551)
Depreciation and amortization |  | 8,050 | 6,873
Provision for losses on accounts receivable |  | 311 | 31
Change in deferred taxes |  | (2,740) | 3,941
Changes in operating assets and liabilities: |  |  |
Increase in receivables |  | (96,193) | (76,845)
Increase in inventories |  | (11,886) | (16,248)
Increase in other assets |  | (12,411) | (3,294)
Increase in accounts payable |  | 27,158 | 21,725
Decrease in customer credit balances |  | (14,294) | (22,805)
Increase in other current and long-term liabilities |  | 19,987 | 11,392
Net cash used in operating activities |  | (63,236) | (65,506)
Cash flows provided by (used in) investing activities: |  |  |
Capital expenditures |  | (3,604) | (4,521)
Proceeds from sales of fixed assets |  | 88 | 34
Purchase of investments | [2] | (34,151) | (11,474)
Acquisitions |  | (224) | (5,835)
Net cash used in investing activities |  | (37,891) | (21,796)
Cash flows provided by (used in) financing activities: |  |  |
Revolving credit facility borrowings |  | 79,149 |
Term loan repayment |  | (2,500) | (8,700)
Distributions |  | (6,302) | (5,860)
Customer retainage payments |  | (539) |
Net cash provided by (used in) financing activities |  | 69,808 | (14,560)
Net decrease in cash, cash equivalents, and restricted cash |  | (31,319) | (101,862)
Cash, cash equivalents, and restricted cash at beginning of period |  | 52,708 | 139,188
Cash, cash equivalents, and restricted cash at end of period |  | $ 21,389 | $ 37,326
[1] | Represents the change in value of unrealized open positions and expired options.
[2] | See Note 2 – Captive insurance collateral

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