REVENUE RECOGNITION (Summary of Contract Assets and Liabilities) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)
Contract Assets
Beginning balance	$ 0
Additions	0
Deductions	0
Ending balance	0
Contract Liabilities
Beginning balance	25,459
Additions	15,584
Deductions	15,198
Ending balance	25,844
Sales
Contract Liabilities
Deductions	14,400
Cost of Sales
Contract Liabilities
Deductions	$ 800

Change In Contract With Customer, Asset [Roll Forward]

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Change In Contract With Customer, Liability [Roll Forward]

+ References

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- Definition

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- Definition

Contract With Customer, Asset, New Contract Additions

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- Definition

Contract With Customer, Liability, Increase From Cash Receipts

+ References

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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-Publisher FASB
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