INCOME TAXES (Summary of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Unrecognized tax benefits
Beginning balance-gross unrecognized tax benefits (UTB's)	$ 45,382	$ 45,430	$ 54,012
Additions based on tax positions related to the current year	48	142	151
Reductions for tax positions related to prior years	(835)	$ (190)	(1,627)
Lapse of statute of limitations	(21,901)		(7,106)
Ending balance-gross unrecognized tax benefits (UTB's)	22,694	$ 45,382	45,430
UTB's as a credit in deferred taxes	(14,604)	(33,021)	(33,187)
Federal benefit of state taxes	(2,063)	(2,176)	(2,244)
UTB's that would impact the effective tax rate	$ 6,000	$ 10,185	$ 9,999

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

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
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: 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

+ Details

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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- Definition

Represents the portion of unrecognized tax benefits, which is related to credit in deferred tax assets.

+ References

No definition available.

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- Definition

Represents the portion of unrecognized tax benefits, which is related to the federal tax benefit of state income tax items.

+ References

No definition available.

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