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FEDERAL INCOME TAX (Income Tax) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current	$ 15,649us-gaap_CurrentFederalTaxExpenseBenefit	$ 19,146us-gaap_CurrentFederalTaxExpenseBenefit	$ 6,644us-gaap_CurrentFederalTaxExpenseBenefit
Deferred	1,677	6,616	(782)
Federal income tax expense	$ 17,326us-gaap_IncomeTaxExpenseBenefit	$ 25,762us-gaap_IncomeTaxExpenseBenefit	$ 5,862us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.