ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in accumulated other comprehensive income
Balance at the beginning of the period			$ 24,204	$ 9,444
Other comprehensive income before reclassifications			1,555	(2,011)
Amounts reclassified from accumulated other comprehensive income			(1,022)	(649)
Other comprehensive income (loss)	(1,440)	(10,288)	533	(2,660)
Balance at the end of period	24,737	6,784	24,737	6,784
Allocated tax (expense) benefit			(342)
Foreign Currency
Changes in accumulated other comprehensive income
Balance at the beginning of the period			(351)	(530)
Other comprehensive income before reclassifications			657	341
Other comprehensive income (loss)			657	341
Balance at the end of period	306	(189)	306	(189)
Allocated tax (expense) benefit			(420)
Pension and Other Benefits (recorded in General & Administrative: Other)
Changes in accumulated other comprehensive income
Balance at the beginning of the period			20,967	7,264
Other comprehensive income (loss)			(1,394)	(58)
Balance at the end of period	19,573	7,206	19,573	7,206
Allocated tax (expense) benefit			890
Pension and Other Benefits (recorded in General & Administrative: Other) | G&A: Other
Changes in accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income			(1,394)	(58)
Unrealized Gains on Marketable Securities (recorded in Investment Expense (Income))
Changes in accumulated other comprehensive income
Balance at the beginning of the period			1,216	1,913
Other comprehensive income before reclassifications			762	(4,841)
Other comprehensive income (loss)			737	(5,142)
Balance at the end of period	1,953	(3,229)	1,953	(3,229)
Allocated tax (expense) benefit			(471)
Unrealized Gains on Marketable Securities (recorded in Investment Expense (Income)) | Investment income
Changes in accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income			(25)	(301)
Unrealized Gains from Equity Method Investees' Cash Flow Hedge (recorded in Equity in Earnings of Non-consolidated Entities)
Changes in accumulated other comprehensive income
Balance at the beginning of the period			2,372	797
Other comprehensive income before reclassifications			136	2,489
Amounts reclassified from accumulated other comprehensive income			397	(290)
Other comprehensive income (loss)			533	2,199
Balance at the end of period	2,905	2,996	2,905	2,996
Allocated tax (expense) benefit			$ (341)