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GOODWILL AND OTHER INTANGIBLES (Tables)
 12 Months Ended
Dec. 31, 2016
GOODWILL AND OTHER INTANGIBLES [Abstract]  
Changes in carrying amount of goodwill
Changes in the carrying amount of goodwill during the years ended December 31, 2016 and 2015 are as follows:

  
Gross
Goodwill
Balance
  
Accumulated
Impairment
Losses
  
Net
Goodwill
Balance
 
Balance as of January 1, 2015
 
$
115,872
  
$
(93,665
)
 
$
22,207
 
Asset held for sale (1)
  
(7,455
)
  
-
   
(7,455
)
Goodwill impairment
  
-
   
(216
)
  
(216
)
Balance as of December 31, 2015
  
108,417
   
(93,881
)
  
14,536
 
Adjustment
  
-
   
-
   
-
 
Balance as of December 31, 2016
 
$
108,417
  
$
(93,881
)
 
$
14,536
 

(1)
Amount consists of $1.3 million of goodwill held for sale as of December 31, 2014 offset by $8.8 million of goodwill as of December 31, 2015. Refer to Note 6 for more information on assets held for sale.
Summary of finite-lived and indefinite-lived intangible assets
Intangible assets, which are included in other assets in the accompanying consolidated balance sheets, consisted of the following:

  
Trade
Name
  
Accreditation
  
Curriculum
  
Total
 
Gross carrying amount at December 31, 2015
 
$
310
  
$
-
  
$
160
  
$
470
 
Additions
  
-
   
-
   
-
   
-
 
Gross carrying amount at December 31, 2016
  
310
   
-
   
160
   
470
 
                 
Accumulated amortization at December 31, 2015
  
308
   
-
   
112
   
420
 
Amortization
  
2
   
-
   
16
   
18
 
Accumulated amortization at December 31, 2016
  
310
   
-
   
128
   
438
 
                 
Net carrying amount at December 31, 2016
 
$
-
  
$
-
  
$
32
  
$
32
 
                 
Weighted average amortization period (years)
  
7
  
Indefinite
   
10
     

  
Trade
Name
  
Accreditation
  
Curriculum
  
Total
 
Gross carrying amount at December 31, 2014
 
$
310
  
$
1,064
  
$
550
  
$
1,924
 
Asset held for sale (1)
  
-
   
(1,064
)
  
(390
)
  
(1,454
)
Gross carrying amount at December 31, 2015
  
310
   
-
   
160
   
470
 
                 
Accumulated amortization at December 31, 2014
  
264
   
-
   
469
   
733
 
Amortization
  
44
   
-
   
21
   
65
 
Asset held for sale (1)
  
-
   
-
   
(378
)
  
(378
)
Accumulated amortization at December 31, 2015
  
308
   
-
   
112
   
420
 
                 
Net carrying amount at December 31, 2015
 
$
2
  
$
-
  
$
48
  
$
50
 
Weighted average amortization period (years)
  
7
  
Indefinite
   
10
     

(1)
Refer to Note 6 for more information on assets held for sale.
Summary of estimated future amortization expense
The following table summarizes the estimated future amortization expense:

Year Ending December 31,
   
2017
 
$
16
 
2018
  
16
 
     
  
$
32