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Pension Plan (Annual and Quarter) (Detail) - Unrecognized pension costs in other comprehensive loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Balance at beginning of year	$ 4,456	$ 4,023
Net actuarial loss	1,743	738
Recognized loss	(347)	(305)
Balance at end of year	$ 5,852	$ 4,456

The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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