CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss
Beginning Balance at Sep. 30, 2012	$ 104,972	$ 134	$ 95,086	$ 9,786	$ (34)
Beginning Balance, shares at Sep. 30, 2012		13,370
Net income (loss)	23,943			23,943
Foreign currency translation adjustments	(33)				(33)
Cash dividends	(9,799)			(9,799)
Stock-based compensation	2,771	$ 1	2,770
Stock-based compensation, shares		97
Exercise of stock options, net	744	$ 1	743
Exercise of stock options, shares		123
Excess tax benefit (shortfall) from stock option exercises and restricted stock vesting	760		760
Repurchase and retirement of common stock	(725)		(725)
Repurchase and retirement of common stock, shares		(34)
Ending Balance at Sep. 30, 2013	122,633	$ 136	98,634	23,930	(67)
Ending Balance, shares at Sep. 30, 2013		13,556
Net income (loss)	10,497			10,497
Foreign currency translation adjustments	4				4
Cash dividends	(10,772)			(10,772)
Stock-based compensation	3,747	$ 1	3,746
Stock-based compensation, shares		127
Exercise of stock options, net	271	$ 1	270
Exercise of stock options, shares		100
Excess tax benefit (shortfall) from stock option exercises and restricted stock vesting	1,319		1,319
Repurchase and retirement of common stock	(2,178)	$ (1)	(2,177)
Repurchase and retirement of common stock, shares		(76)
Ending Balance at Sep. 30, 2014	125,521	$ 137	101,792	23,655	(63)
Ending Balance, shares at Sep. 30, 2014		13,707
Net income (loss)	(17,380)			(17,380)
Foreign currency translation adjustments	(1)				(1)
Cash dividends	(2,717)			(2,717)
Stock-based compensation	1,073	$ 1	1,072
Stock-based compensation, shares		100
Exercise of stock options, net	$ 29		29
Exercise of stock options, shares	12	8
Excess tax benefit (shortfall) from stock option exercises and restricted stock vesting	$ (400)		(400)
Repurchase and retirement of common stock	(123)		(123)
Repurchase and retirement of common stock, shares		(8)
Ending Balance at Jan. 31, 2015	106,002	$ 138	102,370	3,558	(64)
Ending Balance, shares at Jan. 31, 2015		13,807
Net income (loss)	(4,483)			(4,483)
Foreign currency translation adjustments	(9)				(9)
Cash dividends	(11,026)			(11,026)
Stock-based compensation	2,784		2,784
Stock-based compensation, shares		22
Exercise of stock options, net	$ 69		69
Exercise of stock options, shares	11	11
Excess tax benefit (shortfall) from stock option exercises and restricted stock vesting	$ (312)		(312)
Repurchase and retirement of common stock	(127)		(127)
Repurchase and retirement of common stock, shares		(15)
Ending Balance at Jan. 30, 2016	$ 92,898	$ 138	$ 104,784	$ (11,951)	$ (73)
Ending Balance, shares at Jan. 30, 2016		13,825