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