Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ 13,360	$ (93,551)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	7,054	5,670
Stock-based compensation expense	3,210	4,294
Inventory impairments and abandonments	0	148,618
Deferred and other income tax expense (benefit)	3,942	(42,392)
Gain on sale of fixed assets	(111)	(75)
Change in allowance for doubtful accounts	5	(5)
Equity in income of unconsolidated entities	(134)	(16)
Cash distributions of income from unconsolidated entities	56	325
Loss (gain) on extinguishment of debt, net	0	(216)
Changes in operating assets and liabilities:
Decrease in accounts receivable	5,816	6,166
Decrease in income tax receivable	315	0
Increase in inventory	(89,162)	(88,491)
Decrease in other assets	3,063	3,036
Increase (decrease) in trade accounts payable	6,086	(1,029)
Increase (decrease) in other liabilities	587	(25,368)
Net cash used in operating activities	(45,913)	(83,034)
Cash flows from investing activities:
Capital expenditures	(5,478)	(11,508)
Proceeds from sale of fixed assets	136	94
Acquisition, net of cash acquired	0	(4,088)
Net cash used in investing activities	(5,342)	(15,502)
Cash flows from financing activities:
Repayment of debt	(1,150)	(5,062)
Repayment of borrowings from credit facility	(95,000)	(150,000)
Borrowings from credit facility	345,000	225,000
Debt issuance costs	0	(400)
Repurchase of common stock	(3,327)	(24,004)
Tax payments for stock-based compensation awards	(2,661)	(1,886)
Stock option exercises and other financing activities	(1,854)	278
Net cash provided by financing activities	241,008	43,926
Increase (decrease) in cash, cash equivalents, and restricted cash	189,753	(54,610)
Cash, cash equivalents, and restricted cash at beginning of period	122,794	153,248
Cash, cash equivalents, and restricted cash at end of period	$ 312,547	$ 98,638