INCOME TAXES - Summary of Changes in Unrecognized Tax Positions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Change in Unrecognized Tax Positions [Roll Forward]
Unrecognized tax positions, beginning of year		$ 16,104us-gaap_UnrecognizedTaxBenefits
Gross increases - tax positions in prior period	200	267
Gross decreases - tax positions in prior period	(762)	(1,129)
Gross increases - current period tax positions	3,081	2,514
Settlement	(1,165)	0
Lapse of statute of limitations	(1,169)	(2,846)
Unrecognized tax positions, end of year	$ 15,095us-gaap_UnrecognizedTaxBenefits	$ 14,910us-gaap_UnrecognizedTaxBenefits

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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