Annual report pursuant to Section 13 and 15(d)

IMPAIRMENT (REVERSAL) (Details)

v3.8.0.1
IMPAIRMENT (REVERSAL) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Schedule of Investments [Line Items]      
Impairment $ 60 $ 10,381 $ 11,896
Valuation allowance (reversal) on loans 60 4,039 9,541
Traditional golf properties      
Schedule of Investments [Line Items]      
Impairment 0 6,232 0
Traditional golf properties | Oregon and California      
Schedule of Investments [Line Items]      
Impairment of assets held for use   2,700  
Traditional golf properties | New Jersey | Held-for-sale      
Schedule of Investments [Line Items]      
Impairment of assets held for sale   3,600  
Traditional golf properties | Carrying Value | Oregon and California      
Schedule of Investments [Line Items]      
Real estate properties   4,100  
Traditional golf properties | Estimated Fair Value | Oregon and California      
Schedule of Investments [Line Items]      
Real estate properties   1,400  
Debt and equity securities      
Schedule of Investments [Line Items]      
Impairment $ 0 $ 110 $ 2,355