Accumulated Other Comprehensive Loss - Amounts Reclassified Out of AOCI into Income Statement (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other expense, net	$ (8,850)		$ (17,072)
Tax provision	140	$ (4,500)	15,352	$ (100)
Net (loss) income	(97)	$ 5,096	(51,537)	$ (183,498)
Amount Reclassified From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) income	1,129		2,319
Amount Reclassified From AOCI [Member] | Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax provision	(30)		(79)
Net (loss) income	85		230
Amount Reclassified From AOCI [Member] | Defined Benefit Pension Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other expense, net	1,405		2,810
Tax provision	(361)		(721)
Net (loss) income	1,044		2,089
Amount Reclassified From AOCI [Member] | Interest Rate Swap [Member] | Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other expense, net	$ 115		$ 309