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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Weighted Average Shares of Unvested Restricted Stock (Detail) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Unvested restricted stock	1,563	1,732	1,568	1,733

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than option nonvested weighted average number.

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No definition available.

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