XML 75 R61.htm IDEA: XBRL DOCUMENT v3.8.0.1
EMPLOYEE BENEFIT PLANS - Plan assets using fair value hierarchy (Details) - Retirement Income Plan - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy $ 6,722 $ 6,032 $ 5,813
Total      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy 6,031 4,520  
Investments measured at Net Asset Value 691 1,512  
Investments at Fair Value 6,722 6,032  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy 1,239 975  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy 4,792 3,545  
Cash and Cash Equivalents | Total      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [1] 192 200  
Cash and Cash Equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [1] 192 200  
Cash and Cash Equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [1] 0 0  
Fixed Income Securities | Total      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [2] 1,601 1,529  
Fixed Income Securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [2] 0 0  
Fixed Income Securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [2] 1,601 1,529  
Domestic Equity Securities | Total      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [3] 2,844 1,539  
Domestic Equity Securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [3] 1,047 775  
Domestic Equity Securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [3] 1,797 764  
International Equity Securities | Total      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [4] 1,394 1,252  
International Equity Securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [4] 0 0  
International Equity Securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets in the Fair Value Hierarchy [4] $ 1,394 $ 1,252  
[1] Cash and cash equivalents, which are used to pay benefits and plan administrative expenses, are held in Rule 2a-7 money market funds.
[2] Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades.
[3] Domestic equity securities are valued using a market approach based on the quoted market prices of identical instruments in their respective markets.
[4] International equity securities are valued using a market approach based on the quoted market prices of identical instruments in their respective markets.