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Leases Leases (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Lessee Operating Lease Leases Not Yet Commenced Amount | $ 20,500 |  |
Right-of-use leased assets | $ 50,259 | $ 50,800 | $ 0
Operating Lease, Weighted Average Remaining Lease Term | 6 years |  |
Operating Lease, Liability, Current | $ 13,065 |  |
Operating lease liabilities, net of current | 50,371 |  | $ 0
Total Operating Lease Liability | 63,436 | $ 63,700 |
Landlord funded tenant improvements | $ 9,368 |  |
Operating Lease, Weighted Average Discount Rate, Percent | 4.80% |  |
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year | $ 11,791 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Two | 14,194 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Three | 11,282 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Four | 9,945 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Five | 7,631 |  |
Lessee, Operating Lease, Liability, Payments, Due after Year Five | 18,631 |  |
Lessee, Operating Lease, Liability, Payments, Due | 73,474 |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 10,038 |  |
Operating Lease, Liability | $ 63,436 |  |
Minimum [Member] |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract | 4 years |  |
Maximum [Member] |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract | 7 years |  |

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- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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