REVENUE - Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Jan. 01, 2018
REVENUE.
Contract asset (current)	$ 15,858	$ 13,984
Increase / (decrease) in contract asset (current)	1,874
Contract liability (current)	68,134	45,211
Increase / (decrease) in contract liability (current)	22,923
Contract liability (long-term)	11,261	1,476
Increase / (decrease) in contract liability (long-term)	9,785
Revenue recognized previously included in current contract liabilities	45,200
Unearned revenue associated with outstanding contracts	759	$ 839
Estimated revenue to be recognized in 2019	359
Estimated revenue to be recognized after 2019	$ 400

The amount of increase (decrease) in current contract liabilities during the period.

No definition available.

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- Definition

The increase (decrease) in non-current contract liabilities.

+ References

No definition available.

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized, estimated to be recognized after the second year.

+ References

No definition available.

+ Details

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized, estimated to be recognized in the following year.

+ References

No definition available.

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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, classified as current.

+ References

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-Publisher FASB
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- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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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

+ Details

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- References

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

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