XML 66 R96.htm IDEA: XBRL DOCUMENT

Segment Information - Net Sales to Foreign Customers (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Sales Information [Line Items]
Foreign net sales to unaffiliated customers	$ 181,277us-gaap_SalesRevenueNet	$ 171,046us-gaap_SalesRevenueNet	$ 201,662us-gaap_SalesRevenueNet	$ 178,525us-gaap_SalesRevenueNet	$ 149,035us-gaap_SalesRevenueNet	$ 177,350us-gaap_SalesRevenueNet	$ 202,223us-gaap_SalesRevenueNet	$ 150,679us-gaap_SalesRevenueNet	$ 732,510us-gaap_SalesRevenueNet	$ 679,287us-gaap_SalesRevenueNet	$ 759,031us-gaap_SalesRevenueNet
Unaffiliated Customers [Member]
Sales Information [Line Items]
Foreign net sales to unaffiliated customers									31,976	34,154	32,170
Unaffiliated Customers [Member] \| Canada [Member]
Sales Information [Line Items]
Foreign net sales to unaffiliated customers									19,334	19,976	21,079
Unaffiliated Customers [Member] \| Other [Member]
Sales Information [Line Items]
Foreign net sales to unaffiliated customers									$ 12,642	$ 14,178	$ 11,091