Contingencies and commitments - Operating Leases (Details) $ in Thousands |
Dec. 31, 2018
USD ($)
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| Operating Leases, Future Minimum Payments Receivable [Abstract] | |
| 2019 | $ 3,682 |
| 2020 | 3,695 |
| 2021 | 3,728 |
| 2022 | 3,772 |
| 2023 | 3,309 |
| Thereafter | 13,772 |
| Total | $ 31,958 |
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- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- References No definition available.
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- Definition Future rental payments receivable within one year of the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Future rental payments receivable within the fifth year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Future rental payments receivable within the fourth year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Future rental payments receivable within the third year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Future rental payments receivable within the second year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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