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Employee Benefit Plans - Additional Information (Detail) (Predecessor, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Predecessor
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation liabilities	$ 1,400	$ 1,200
Cash surrender value of life insurance policies	$ 1,300	$ 1,200

- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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