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RETIREMENT PLANS: (Details 8) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2014 $ 4,010
2015 4,235
2016 4,489
2017 4,628
2018 4,752
2019-2023 27,005
Supplemental Employee Retirement Plans, Defined Benefit
 
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2014 0
2015 234
2016 231
2017 227
2018 224
2019-2023 $ 869