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RESTRICTED INVESTMENTS AND BOND COLLATERAL - Amortized Cost, Gross Unrealized Holding Gains and Losses and Fair Value of Held-to-Maturity Securities (Detail) (Held-to-maturity Securities [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Held-to-maturity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 32,184	$ 3,983
Gross unrealized holding gains	309	356
Gross unrealized holding losses	(447)	0
Fair value	$ 32,046	$ 4,339

This item represents investments in debt securities which are categorized as held-to-maturity and that have scheduled maturities more than one year from the balance sheet date or operating cycle, if longer, and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

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