SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Purchased and Internally Developed Software (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Less accumulated amortization	$ (36,917)	$ (33,325)
Net software	96,455us-gaap_FiniteLivedIntangibleAssetsNet
Software
Finite-Lived Intangible Assets [Line Items]
Less accumulated amortization	(35,369)	(29,802)
Net software	13,932	14,989
Software \| Purchased software
Finite-Lived Intangible Assets [Line Items]
Software	21,872	20,433
Software \| Internally developed software
Finite-Lived Intangible Assets [Line Items]
Software	$ 27,429	$ 24,358

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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