Commitments and Contingencies (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 12, 2010
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 12,475
Business Acquisition, Cost of Acquired Entity, Cash Paid	7,142
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred	5,333
Business Acquisition, Cost Of Acquired Entity, Liabilities Incurred, Discount Factor	14.00%
Business Acquisition, Cost of Acquired Entity, Current Liabilities Incurred	1,127
Business Acquisition, Cost of Acquired Entity, Long-term Liabilities Incurred	$ 4,206