Schedule of Other Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Income and Expenses [Abstract]
Interest income	$ 1,142	$ 1,411	$ 1,809
Land impairment loss	(1,557)	0	0
Gain on asset dispositions, net	436	8,396	3,328
Escrow settlement	0	4,790	0
Intangible asset impairment loss	0	(4,272)	0
Other, net	(196)	551	321
Total	$ (175)	$ 10,876	$ 5,458