Goodwill (Changes in Goodwill) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Balance, beginning of year, Goodwill, gross	$ 316,962	$ 316,851
Balance, beginning of year, Accumulated impairment lossses	(310,653)	(310,653)
Balance, beginning of year, Goodwill	6,309	6,198
Increases due to current year acquisitions	11,463	0
Effects of foreign currency translation	(296)	111
Total goodwill increase (decrease)	11,167	111
Balance, end of year, Goodwill, gross	328,129	316,962
Balance, end of year, Accumulated impairment lossses	(310,653)	(310,653)
Balance, end of year, Goodwill	$ 17,476	$ 6,309