SHAREHOLDERS' EQUITY (Details) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended	41 Months Ended	0 Months Ended
	Jan. 30, 2014	Dec. 31, 2013	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014	Dec. 31, 2014	Apr. 30, 2015	Mar. 20, 2015	May 31, 2014	Dec. 10, 2013
SHAREHOLDERS' EQUITY (Details) [Line Items]
Common stock, dividends, per share, cash paid (in Dollars per share)			$ 0.04		$ 0.03	$ 0.08	$ 0.06	$ 0.12
Number of additional shares authorized for awards (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%
Stock-based compensation			$ 2,795,000		$ 3,321,000	$ 5,372,000	$ 4,996,000
Stock repurchase program, authorized amount												50,000,000	50,000,000
Stock Repurchase Program, Additional Authorized Amount											50,000
Stock repurchased during period, shares (in Shares)		4,444,444	1,581,200			2,606,241,000			9,601,103
Stock repurchased during period, value			24,212,000			36,498,000			108,695,000
Stock repurchased during period per share (in Dollars per share)		$ 11.25	$ 15.31			$ 14.00			$ 11.32
Stock repurchase program, remaining authorized repurchase amount			52,362,000			52,362,000
Shares paid for tax withholding for share based compensation (in Shares)			76,025	14,626
Shares paid for tax withholding for share based compensation, value			1,080,000	195,000
Shares paid for tax withholding for share based compensation, value per share (in Dollars per share)			$ 14.21	$ 13.30
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%
Subsequent Event [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Dividends declared, amount per share (in Dollars per share)										$ 0.04
Incentive Plan [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Number of shares authorized for award (in Shares)			4,200,000			4,200,000
New shares issued (in Shares)			600,000
Incentive Stock Options [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Number of shares available for grant (in Shares)			422,877			422,877
2006 Equity Incentive Plan [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Share based compensation arrangement by share based payment award equity instruments other than options additional grants in future (in Shares)			0			0
Restricted Stock [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Equity instruments other than options, grants in period (in Shares)			201,399	462,032
Award vesting period			3 years
Equity instruments other than options, vested in period, fair value			$ 2,805,000	$ 5,775,000
Equity instruments other than options, grants in period, weighted average grant date fair value (in Dollars per share)			$ 13.93	$ 12.50
Performance Shares [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Equity instruments other than options, grants in period (in Shares)			458,016
Subject to Performance Conditions [Member] | Restricted Stock [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Equity instruments other than options, grants in period (in Shares)			146,699