INCOME TAXES Reconciliation of Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of period	$ 16,897us-gaap_UnrecognizedTaxBenefits	$ 16,788us-gaap_UnrecognizedTaxBenefits	$ 7,668us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions related to the current year	2,002	1,572	4,172
Additions for tax positions of prior years	839	1,105	6,911
Reductions for tax positions of prior years	(183)	(1,464)	(1,061)
Lapse in statute of limitations	(1,281)	(238)	(286)
Settlements	0	(866)	(616)
Unrecognized tax benefits, end of the period	$ 18,274us-gaap_UnrecognizedTaxBenefits	$ 16,897us-gaap_UnrecognizedTaxBenefits	$ 16,788us-gaap_UnrecognizedTaxBenefits

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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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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-Publisher FASB

-Name Accounting Standards Codification

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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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