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OPERATING LEASES AND COMMITMENTS (Details 2) (Commitment to acquire office building and service bay, USD $) In Millions, unless otherwise specified | Dec. 31, 2014
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Commitment to acquire office building and service bay |
Commitment |
Amount of commitment | $ 11.8 us-gaap_ContractualObligationDueInNextTwelveMonths / us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis = us-gaap_CapitalAdditionsMember

X
- Definition Amount of contractual obligation maturing in the next fiscal year following the latest fiscal year. + References No definition available. + Details
Name: | us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_PurchaseCommitmentExcludingLongtermCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration