ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Components of Accumulated Other Comprehensive Income (Loss)

The table below provides the components of accumulated other comprehensive income (loss) (“AOCI”) for the periods presented (in thousands). There was no activity in the three months ended June 30, 2018, therefore it is not presented.

	Six Months Ended June 30, 2018
	Total Post- Retirement Benefits Adjustments		Foreign Currency Translation Adjustments			Non-controlling Interest - Principal Equityholders Reclassification			Total
Balance, beginning of period	$	2,082	$	(45,205	)	$	25,155		$	(17,968	)
Gross amounts reclassified within AOCI	—		25,155			(25,155		)	—
Balance, end of period	$	2,082	$	(20,050	)	$	—		$	(17,968	)

	Three Months Ended June 30, 2017
	Total Post- Retirement Benefits Adjustments		Foreign Currency Translation Adjustments			Non-controlling Interest - Principal Equityholders Reclassification			Total
Balance, beginning of period	$	2,061	$	(63,448	)	$	43,398		$	(17,989	)
Gross amounts reclassified within AOCI	—		11,489			(11,489		)	—
Balance, end of period	$	2,061	$	(51,959	)	$	31,909		$	(17,989	)

	Six Months Ended June 30, 2017
	Total Post- Retirement Benefits Adjustments		Foreign Currency Translation Adjustments			Non-controlling Interest - Principal Equityholders Reclassification			Total
Balance, beginning of period	$	2,061	$	(79,927	)	$	59,877		$	(17,989	)
Gross amounts reclassified within AOCI	—		27,968			(27,968		)	—
Balance, end of period	$	2,061	$	(51,959	)	$	31,909		$	(17,989	)