XML 26 R47.htm IDEA: XBRL DOCUMENT

Fair Value Measurements - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Investment Securities [Line Items]
Unrealized gains on securities recorded as other income	$ 18	$ 138
Metal commodity swaps	0
2010 Swap [Member]
Investment Securities [Line Items]
Interest rate swap	$ 0

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details