Leases - Operating Leases, Summary of Amounts Reported in Consolidated Balance Sheet (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Operating Leases:
Operating lease right-of-use assets	$ 16,859
Operating lease liabilities	1,163
Operating lease liabilities - net of current portion	15,958
Total operating lease liabilities	17,121
Other information
Operating cash flows from operating leases	1,280
Right-of-use assets obtained in exchange for new lease liabilities	$ 4,488
Weighted-average remaining lease term	11 years 4 months 24 days
Weighted average discount rate	12.70%