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Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Contract Assets and Liabilities
Contract asset, current	$ 1,900	$ 1,176
Change in contract asset - current	$ 724
% of change in contract asset - current	62.00%
Contract asset, noncurrent	$ 802	453
Change in contract Asset – noncurrent	$ 349
% of change in contract Asset – noncurrent	77.00%
Contract liabilities	$ (13,787)	(9,912)
Change in contract liabilities	$ (3,875)
% of change in contract liabilities	39.00%
Net contract liability	$ (11,085)	$ (8,283)
Change in net contract liability	$ (2,802)
% of change in net contract liability	34.00%
Revenue recognized related to contract liability	$ 8,000
Amortization of contract assets	$ 1,800

X

- Definition

Represents the amortization of contract assets into revenue.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in revenue recognized for current cumulative catch-up adjustment from the timing of customer prepayments and contract billings which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ 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 net of amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from the timing of customer prepayments and contract billings which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in revenue recognized for noncurrent cumulative catch-up adjustment from the timing of customer prepayments and contract billings which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

No definition available.

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X

- Definition

Represents the percentage of change in current contract with customers assets.

+ References

No definition available.

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- Definition

Represents the percentage of change in noncurrent contract with customers assets.

+ References

No definition available.

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- Definition

Represents the percentage of change in contract with customers liabilities.

+ References

No definition available.

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- Definition

Represents the percentage of change in contract with customers net assets liabilities.

+ 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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- 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 noncurrent.

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- Definition

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

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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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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.

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