Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENT (Details)

v3.6.0.2
FAIR VALUE MEASUREMENT (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Number of life insurance policies | item 70  
Life insurance policies, net face value $ 42,200  
Cash surrender value of life insurance policies 15,700 $ 13,900
Deferred compensation assets 15,900 14,000
Defined Contribution Pension [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 188 140
Total fair value 188 140
Defined Contribution Pension [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 188 140
Total fair value $ 188 $ 140