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Restructuring Charges (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jan. 30, 2018 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Assets Held-for-sale, Not Part of Disposal Group, Current | $ 3,500 |  |  | $ 3,500 |  |
Restructuring charges | (1,022) |  | $ 0 | $ 2,223 | $ 0 |
Restructuring and Related Cost, Positions Eliminated [Abstract] |  |  |  |  |  |
Restructuring and Related Cost, Number of Positions Eliminated |  |  |  | 50 |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring charges | (1,022) |  | $ 0 | $ 2,223 | $ 0 |
2018 Plan [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | 167 | $ 3,245 |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance | 991 | 0 |  | 0 |  |
Restructuring charges | 167 | 3,245 |  |  |  |
Payments for Restructuring | (352) | (1,584) |  |  |  |
Restructuring Reserve, Settled without Cash | 0 | (670) |  |  |  |
Ending balance | 806 | 991 |  | 806 |  |
2018 Plan [Member] | Employee Severance [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | (123) | 2,357 |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance | 827 | 0 |  | 0 |  |
Restructuring charges | (123) | 2,357 |  |  |  |
Payments for Restructuring | (270) | (1,530) |  |  |  |
Restructuring Reserve, Settled without Cash | 0 | 0 |  |  |  |
Ending balance | 434 | 827 |  | 434 |  |
2018 Plan [Member] | Restructuring Charges [Member] |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance | 164 | 0 |  | 0 |  |
Restructuring Costs and Asset Impairment Charges | 290 | 888 |  |  |  |
Payments for Restructuring | (82) | (54) |  |  |  |
Restructuring Reserve, Settled without Cash | 0 | (670) |  |  |  |
Ending balance | $ 372 | $ 164 |  | 372 |  |
2018 Plan [Member] | Other |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges |  |  |  | 2,000 |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring charges |  |  |  | 2,000 |  |
2018 Plan [Member] | Corporate |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges |  |  |  | 200 |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring charges |  |  |  | $ 200 |  |
Minimum [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Company estimate of the aggregate restructuring cost |  |  |  |  |  | $ 2,000
Maximum [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Company estimate of the aggregate restructuring cost |  |  |  |  |  | $ 5,000

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