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RETIREMENT PLANS: (Details 8) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
2013 $ 2,009
2014 2,312
2015 2,564
2016 2,872
2017 5,068
2018-2022 18,374
Supplemental Employee Retirement Plans, Defined Benefit [Member]
 
2013 0
2014 0
2015 253
2016 250
2017 248
2018-2022 $ 1,191