Annual report pursuant to Section 13 and 15(d)

IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details 6)

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IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details 6)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
integerItemType
>10% [Member] | Digital Media [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 1
Carrying value including goodwill | $ $ 448
>10% [Member] | Publishing Enterprise Valuations [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 0
Carrying value including goodwill | $ $ 0
>10% to 20% [Member] | Digital Media [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 0
Carrying value including goodwill | $ $ 0
>10% to 20% [Member] | Publishing Enterprise Valuations [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 0
Carrying value including goodwill | $ $ 0
>20% to 50% [Member] | Digital Media [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 1
Carrying value including goodwill | $ $ 3,585
>20% to 50% [Member] | Publishing Enterprise Valuations [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 0
Carrying value including goodwill | $ $ 0
> than 50% [Member] | Digital Media [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 2
Carrying value including goodwill | $ $ 28,343
> than 50% [Member] | Publishing Enterprise Valuations [Member]  
Carrying Amounts And Fair Values Of Financial Instruments [Line Items]  
Number of accounting units | integerItemType 2
Carrying value including goodwill | $ $ 2,993