Revenues (Contract Balances) (Details) - USD ($) $ in Thousands	Jun. 10, 2019	Sep. 30, 2019	Dec. 31, 2018
Revenues [Abstract]
Contract assets		$ 2,177	$ 2,484
Contract liabilities		$ 3,403	$ 4,923
decrease in contract assets	$ 700
decrease in contract liabilities	$ 100

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.

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Period Type:	instant

- Definition

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

+ References

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Amount of increase (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.

+ References

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Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable.

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