Goodwill And Other Intangible Assets (Estimated Amortization) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Disclosure Goodwill And Other Intangible Assets Estimated Amortization [Abstract]
Actual in nine months ended September 30, 2012	$ 1,078	$ 970	$ 3,216	$ 2,363
Estimated remaining in 2012	1,158		1,158
Estimated-2013	4,471		4,471
Estimated-2014	3,942		3,942
Estimated-2015	2,402		2,402
Estimated-2016	$ 1,836		$ 1,836

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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