The expected non-cash restructuring related costs.

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

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- Definition

The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

+ References

No definition available.

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No definition available.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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Restructuring Charges (Details) - USD ($) $ in Thousands	12 Months Ended
Restructuring Charges (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 0	$ 3,576
Restructuring Reserve [Roll Forward]
Restructuring charges	0	0	3,576
2015 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Company estimate of the aggregate restructuring cost			3,000
Restructuring charges			3,576
noncashrestructuringexpectedcost			$ 1,000
Restructuring and Related Cost, Positions Eliminated [Abstract]
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent			8.00%
Restructuring Reserve [Roll Forward]
Beginning balance	0	(1,228)	$ 0
Restructuring charges			3,576
Payments for Restructuring		(1,228)	(1,765)
Restructuring Reserve, Settled without Cash			(583)
Ending balance		0	(1,228)
2015 Plan [Member] \| Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,993
Restructuring Reserve [Roll Forward]
Beginning balance	0	(1,228)	0
Restructuring charges			2,993
Payments for Restructuring		(1,228)	(1,765)
Restructuring Reserve, Settled without Cash			0
Ending balance		0	(1,228)
2015 Plan [Member] \| Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	$ 0	0	0
Restructuring Costs and Asset Impairment Charges			583
Payments for Restructuring		0	0
Restructuring Reserve, Settled without Cash			(583)
Ending balance		$ 0	0
2015 Plan [Member] \| MID
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1,400
Restructuring Reserve [Roll Forward]
Restructuring charges			1,400
2015 Plan [Member] \| Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1,200
Restructuring Reserve [Roll Forward]
Restructuring charges			1,200
2015 Plan [Member] \| Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges			900
Restructuring Reserve [Roll Forward]
Restructuring charges			900
2015 Plan [Member] \| RSD
Restructuring Cost and Reserve [Line Items]
Restructuring charges			100
Restructuring Reserve [Roll Forward]
Restructuring charges			$ 100