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Restructuring - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 USD ($) employee | Mar. 31, 2017 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) employee | Jun. 30, 2016 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges | $ 1,079 |  | $ 0 | $ 1,805 | $ 0
Arizona |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of employees | employee | 70 |  |  | 70 |
Restructuring charges |  | $ 1,100 |  | $ 1,800 |
Employee Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges | $ 100 |  |  | 320 |
Expected cost to be paid | $ 1,200 |  |  | $ 1,200 |

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