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Leases - Other information related to operating leases (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Cash paid for amounts included in the measurement of operating lease liabilities:  
Operating cash flows from operating leases $ 258
Noncash right-of-use assets recorded for operating lease liabilities:  
Adoption of Topic 842 1,562
In exchange for new operating lease liabilities during the period $ 0