Quarterly report pursuant to Section 13 or 15(d)

COMMON AND PREFERRED STOCK (Details)

v3.4.0.3
COMMON AND PREFERRED STOCK (Details)
 3 Months Ended
Mar. 31, 2016
USD ($)
Class
$ / shares
shares
Mar. 31, 2015
USD ($)
Dec. 31, 2015
$ / shares
shares
May. 31, 2011
USD ($)
Equity [Abstract]        
Total shares of preferred and common stock authorized for issuance (in shares) | shares 100,000,000      
Number of classes of shares | Class 2      
Common stock, shares authorized (in shares) | shares 95,000,000      
Common stock, par value (in dollars per share) | $ / shares $ 0.001   $ 0.001  
Preferred stock, shares authorized (in shares) | shares 5,000,000   5,000,000  
Preferred stock, par value (in dollars per share) | $ / shares $ 0.001   $ 0.001  
Stock Activity [Abstract]        
Common stock surrendered by certain employees to cover tax obligations (in shares) | shares 301,679      
Fair value of common stock surrendered by certain employees to cover tax obligations | $ $ 1,159,000      
Stock Repurchase Program [Abstract]        
Stock repurchase program, amount approved | $       $ 150,000,000
Performance Stock [Member]        
Performance Equity Awards [Abstract]        
Vesting period (in years) 3 years      
Risk-free interest rate, minimum 0.49%      
Risk-free interest rate, maximum 83.30%      
Value of performance shares if all participants earned maximum award | $ $ 2,800,000      
Compensation expense | $ $ 100,000 $ 0    
Performance Stock [Member] | Minimum [Member]        
Performance Equity Awards [Abstract]        
Participant's earning percentage 0.00%      
Performance Stock [Member] | Maximum [Member]        
Performance Equity Awards [Abstract]        
Participant's earning percentage 150.00%