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Commitments and Contingencies - Lease Liability Maturity Schedule (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases
2019	$ 3,344
2020	4,220
2021	2,535
2022	1,672
2023	1,177
Thereafter	2,564
Total minimum lease payments	15,512
Amounts representing interest (present value discount)	(1,163)
Present value of net minimum lease payments	$ 14,349
Weighted average remaining term (in years)	5 years 1 month 6 days
Weighted average discount rate	2.87%
Finance Lease Liabilities, Payments, Due [Abstract]
2019	$ 127
2020	161
2021	28
2022	1
2023	0
Thereafter	0
Total minimum lease payments	317
Amounts representing interest (present value discount)	(8)
Present value of net minimum lease payments	$ 309
Weighted average remaining term (in years)	1 year 10 months 24 days
Weighted average discount rate	2.92%

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