Amounts Recognized in AOCI (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, beginning balance	$ (3,247)	$ (14,170)
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, Pre tax amount	4,634	17,332
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, Income tax effect	(2,163)	(6,409)
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, Change, net of income tax	2,471	10,923
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, ending balance	(776)	(3,247)	$ (14,170)
Foreign Currency Translation Adjustment, beginning balance	(2,431)	0
Foreign Currency Translation Adjustment, Pretax amount	(1,728)	(2,431)	0
Foreign Currency Translation Adjustment, Income tax effect	0	0
Foreign Currency Translation Adjustment, Change, net of income tax	(1,728)	(2,431)
Foreign Currency Translation Adjustment, ending balance	(4,159)	(2,431)	0
Minimum Pension Liability, beginning balance	(19,554)	(10,640)
Minimum Pension Liability, Pre tax amount	2,177	(14,270)
Minimum pension liability, income tax effect	(817)	5,356	5,670
Minimum Pension Liability, Change, net of income tax	1,360	(8,914)
Minimum Pension Liability, ending balance	(18,194)	(19,554)	(10,640)
Total AOCI, beginning balance	(25,232)	(24,810)
Total AOCI, Pre tax amount	5,083	631	31,284
Total AOCI, Income tax effect	(2,980)	(1,053)	(11,940)
Total AOCI, Change, net of income tax	2,103	(422)	19,344
Total AOCI, ending balance	$ (23,129)	$ (25,232)	$ (24,810)