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Commitments and Contingencies - Narrative (Details) $ in Thousands |  | 6 Months Ended
--- | --- | ---
Apr. 19, 2018 subcontractor | Jun. 30, 2019 USD ($)
Loss Contingencies [Line Items] |  |
Cash payments |  | $ 3,200
Weighted average remaining lease term |  | 6 years 12 months 18 days
Weighted average discount rate, percent |  | 6.00%
Lease not yet commenced |  | $ 300
Lease not yet commenced, lease term |  | 3 years
Joseph Waggoner v VSE re Overtime Compensation |  |
Loss Contingencies [Line Items] |  |
Number of subcontractors | subcontractor | 2 |
Minimum |  |
Loss Contingencies [Line Items] |  |
Lease term |  | 2 years
Maximum |  |
Loss Contingencies [Line Items] |  |
Lease term |  | 15 years

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