STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details)						1 Months Ended	3 Months Ended				12 Months Ended			48 Months Ended	49 Months Ended
	Jan. 29, 2016 USD ($)	Jan. 30, 2014 shares	Jan. 10, 2014 USD ($) installment $ / shares shares	Dec. 10, 2013 USD ($) $ / shares shares	Nov. 12, 2013	Nov. 11, 2016 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2016 $ / shares shares	Mar. 31, 2016 USD ($) senior_executive $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares	Sep. 30, 2014 USD ($) $ / shares shares	Jan. 29, 2020 shares	Sep. 30, 2015 USD ($) $ / shares shares	Nov. 16, 2016 USD ($)	Jul. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)	May 31, 2014 USD ($)	Aug. 31, 2011 USD ($)
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Common stock, dividends, per share, cash paid (in Dollars per share) | $ / shares											$ 0.20	$ 0.16	$ 0.12
Share-based payment award, description											Options granted under the Incentive Plan may be either “incentive stock options” or nonqualified stock options, generally expire ten years after the date of grant and are granted at an exercise price of not less than 100% of the fair market value at the date of grant.
Share-based payment award, expiration period		10 years
Maximum percentage of exercise price at grant date fair value		100.00%
Share-based payment award, number of shares authorized (in Shares)							5,147,200				5,147,200
Share-based payment award, options, vested in period, fair value | $											$ 23,965,000	$ 5,068,000	$ 14,058,000
Employee service share-based compensation, nonvested awards, compensation not yet recognized, share-based awards other than options | $							$ 18,881,000				$ 18,881,000
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition											1 year 5 months
Stock repurchased during period, shares (in Shares)				4,444,444							5,311,915	1,906,631	3,549,077		20,300,298
Stock repurchased during period, value | $				$ 50,000,000							$ 80,934,000	$ 23,167,000	$ 56,288,000		$ 259,420,000
Stock repurchased during period per share (in Dollars per share) | $ / shares				$ 11.25							$ 15.24	$ 12.15	$ 15.86		$ 12.78
Repurchased on the open market, shares											15,855,854
Stock repurchased during period, share price discount rate					9.20%
Stock repurchase program, authorized amount | $				$ 50,000,000									$ 20,000,000				$ 50,000,000	$ 50,000,000	$ 50,000,000	$ 50,000,000
Stock repurchase program, remaining authorized repurchase amount | $							$ 51,637,000				$ 51,637,000
Shares paid for tax withholding for share based compensation (in Shares)											510,843
Shares paid for tax withholding for share based compensation, value | $											$ 8,788,000
Shares paid for tax withholding for share based compensation, value per share (in Dollars per share) | $ / shares											$ 17.20
Stock issued during period, value, ESOP | $													$ 20,000,000
Stock issued during period, shares, ESOP													1,591,117
ESOP, weighted average purchase price of shares purchased (in Dollars per share) | $ / shares													$ 12.57
Northcote Holdings Pty. Ltd [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Stock issued during period, shares, acquisitions			44,476
Stock issued during period, value, acquisitions | $			$ 584,000
Business acquisition, share price (in Dollars per share) | $ / shares			$ 13.13
GS Direct [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Shares, outstanding				5,560,000
Percentage held common stock outstanding				10.00%
Incentive Plan [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, number of shares authorized (in Shares)		2,350,000
Incentive Stock Options [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Stock issued during period, shares, new issues (in Shares)		600,000
Share-based payment award, number of shares available for grant (in Shares)							1,922,661				1,922,661
2006 Equity Incentive Plan [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share based payment award equity instruments other than options additional grants in future (in Shares)							0				0
Restricted Stock [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, award vesting period									3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $									$ 618,000
Vested (in Dollars per share) | $ / shares									$ 15.18		$ 17.30
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period									40,700		1,049,704
Weighted average grant date fair value (in Dollars per share) | $ / shares											$ 11.21
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period											1,385,061
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares							$ 12.10				$ 12.10	$ 12.01			$ 12.01
Restricted Stock [Member] | Northcote Holdings Pty. Ltd [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, award vesting period			3 years
Share-based payment award, non-option equity instruments, granted (in Shares)			1
Number of installments for vesting of stock awards | installment			3
Restricted Stock [Member] | Minimum [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, award vesting period											3 years
Restricted Stock [Member] | Maximum [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, award vesting period											4 years
Performance Shares [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, award vesting period									3 years	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $									$ 473,000	$ 6,425,000
Vested (in Dollars per share) | $ / shares									$ 14.90
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period							0	0	31,761	372,243
Weighted average grant date fair value (in Dollars per share) | $ / shares										$ 17.26
Restricted Stock and Performance Shares [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period									677,461
Executive Officer [Member] | Restricted Stock [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based payment award, award vesting period									4 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Post-Vesting Holding Period									2 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period									605,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Number of Persons Granted Shares | senior_executive									2
Stock Granted, Value, Share-based Compensation, Gross | $	$ 4,247,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares								$ 7.02
Scenario, Forecast [Member] | Executive Officer [Member] | Restricted Stock [Member] | Minimum [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period														220,000
Scenario, Forecast [Member] | Executive Officer [Member] | Restricted Stock [Member] | Maximum [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period														605,000
Subsequent Event [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) [Line Items]
Stock issued during period, value, ESOP | $						$ 9,213,000
Stock issued during period, shares, ESOP						548,912
ESOP, weighted average purchase price of shares purchased (in Dollars per share) | $ / shares						$ 16.78
ESOP repurchase obligation amount | $																$ 1,695,000