| **Leases Leases - Maturity of Lease Liabilities (Details) $ in Thousands**           | Mar. 31, 2019 USD ($) |
|--------------------------------------------------------------------------------------|-----------------------|
| **Operating and Financing Lease Liabilities, Payments, Rolling Maturity [Abstract]** |                  |
| 2019                                                                                 | $ 5,809               |
| 2020                                                                                 | 7,626                 |
| 2021                                                                                 | 6,883                 |
| 2022                                                                                 | 5,379                 |
| 2023                                                                                 | 1,715                 |
| Thereafter                                                                           | 2,297                 |
| Total Lease Payments                                                                 | 29,709                |
| Less interest and discount, total                                                    | (3,001)               |
| Present value of lease liabilities                                                   | $ 26,708              |

| X                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease Liabilities, Payments, Rolling Maturity [Abstract]
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due After Year Five
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                    |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due In Next Twelve Months
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due In Year Five
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due In Year Four
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                     |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due In Year Three
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Payments, Due In Year Two
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Operating and Financing Lease, Liability, Undiscounted Excess Amount
+ References
No definition available.
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