SHAREHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended			3 Months Ended						6 Months Ended		12 Months Ended	32 Months Ended	0 Months Ended		6 Months Ended		3 Months Ended				1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Dec. 31, 2013	Aug. 31, 2011	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2014	May 01, 2014 Subsequent Event [Member]	Mar. 31, 2014 Incentive Plan [Member]	Mar. 31, 2014 Incentive Stock Options [Member]	Mar. 31, 2014 Two Thousand Six Equity Incentive Plan [Member]	Mar. 31, 2014 Restricted Stock [Member]	Dec. 31, 2013 Restricted Stock [Member]	Mar. 31, 2014 Performance Shares [Member]	Dec. 31, 2013 Performance Shares [Member]	Jan. 31, 2014 Restricted Stock Units (RSUs) [Member]	Mar. 31, 2014 Employee Stock Option [Member]	Dec. 31, 2013 Employee Stock Option [Member]	Mar. 31, 2014 Employee Stock Option [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share)				$ 0.03	$ 0.03	$ 0.025	$ 0.025	$ 0.025	$ 0.025			$ 0.10
Dividends Payable, Amount Per Share (in Dollars per share)				$ 0.03						$ 0.03			$ 0.03
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in Shares)										1,200,000
Share-based Compensation Arrangement by 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 Compensation Arrangement by Share-based Payment Award, Expiration Period										10 years
Maximum Percentage of Exercise Price at Grand Date Fair Value										100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)															4,200,000
Stock Issued During Period, Shares, New Issues (in Shares)	44,476															600,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)																963,657
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Additional Grants in Future (in Shares)																	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)																		518,490	599,328	461,827	554,498
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																		4 years	4 years			3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value																		$ 7,074	$ 7,426
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)																		$ 13.64	$ 12.39
Share-based Compensation				3,321				3,338		4,996	6,298
Stock Repurchase Program, Authorized Amount		50,000	50,000							50,000				50,000										10,000	10,000
Stock Repurchased During Period, Shares (in Shares)		4,444,444								598,481			4,320,712										629,977	120,000	749,977
Stock Repurchased During Period, Value	584	50,000								7,501			45,474										8,409	1,591	10,000
Stock Repurchased During Period Per Share (in Dollars per share)	$ 13.13	$ 11.25								$ 12.53			$ 10.52										$ 13.35	$ 13.26	$ 13.33
Stock Repurchase Program, Remaining Authorized Repurchase Amount										4,525
Shares Paid for Tax Withholding for Share Based Compensation (in Shares)				123,052	288,012
Shares Paid For Tax Withholding For Share Based Compensation, Value				$ 1,502	$ 3,764
Shares Paid For Tax Withholding For Share Based Compensation, Value Per Share (in Dollars per share)				$ 12.21	$ 13.07
Stock Issued During Period Conversion Ratio																						1.00%
Number of Installments for Vesting of Stock Awards																						3
Stock Repurchase During Period Stock Closing Price Discount Percent		9.20%
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in Shares)		5,560,000			5,560,000
Stock Repurchase Program Number of Shares Authorized to be Repurchased Percent		10.00%			10.00%