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Income Taxes: Income from continuing operations (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Income (Loss) from Continuing Operations before Income Taxes, Domestic $ 33,508us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 48,964us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 62,204us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Income (Loss) from Continuing Operations before Income Taxes, Foreign 6,284us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 3,750us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign (365)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Income (Loss) from Continuing Operations Attributable to Parent $ 39,792us-gaap_IncomeLossFromContinuingOperations $ 52,714us-gaap_IncomeLossFromContinuingOperations $ 61,839us-gaap_IncomeLossFromContinuingOperations