Changes in Accumulated Other Comprehensive Earnings, Net of Tax (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ (44,114)	$ (106,169)
Other comprehensive earnings before reclassifications, net of tax	914	(834)
Amounts reclassified from accumulated other comprehensive loss, net of tax	456	2,055
Other comprehensive earnings, net of tax	1,370	1,221
Balance at end of period	(42,744)	(104,948)
Pension and Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(44,549)	(108,189)
Amounts reclassified from accumulated other comprehensive loss, net of tax	282	1,893
Other comprehensive earnings, net of tax	282	1,893
Balance at end of period	(44,267)	(106,296)
Foreign Currency
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	3,902	6,157
Other comprehensive earnings before reclassifications, net of tax	914	(834)
Other comprehensive earnings, net of tax	914	(834)
Balance at end of period	4,816	5,323
Unamortized Value of Terminated Forward Starting Interest Rate Swap
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(3,467)	(4,137)
Amounts reclassified from accumulated other comprehensive loss, net of tax	174	162
Other comprehensive earnings, net of tax	174	162
Balance at end of period	$ (3,293)	$ (3,975)