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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 6 Months Ended
Jun. 30, 2015
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Loyalty deferred revenue
Deferred commissions were $4.2 million and $4.5 million at June 30, 2015 and December 31, 2014, respectively.

Loyalty program
 (in thousands) 
Loyalty deferred revenue as of January 1, 2014
 
$
5,456
 
Loyalty points forfeited or expired
  
(4,664
)
Loyalty points used
  
(12,348
)
Loyalty points vested
  
19,580
 
Loyalty points unvested
  
1,679
 
Loyalty deferred revenue as of December 31, 2014
 
$
9,703
 

Loyalty deferred revenue as of January 1, 2015
 
$
9,703
 
Loyalty points forfeited or expired
  
(5,310
)
Loyalty points used
  
(7,123
)
Loyalty points vested
  
6,432
 
Loyalty points unvested
  
4,167
 
Loyalty deferred revenue as of  June 30, 2015
 
$
7,869
 
Sales return reserve
For the six months ended June 30, 2015 our sales return reserve consisted of the following (in thousands):

Sales reserve as of January 1, 2015
 
$
207
 
Provision related to sales made in current period
  
828
 
Adjustment related to sales made in prior periods
  
(28
)
Actual returns or credits related to current period
  
(632
)
Actual returns or credits related to prior periods
  
(172
)
Sales reserve as of June 30, 2015
 
$
203