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Note 8 - Leases - Lease Obligations (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Amortization of right-of-use assets	$ 1,406	$ 4,225
Interest on lease liabilities	210	644
Operating lease cost	6,167	17,824
Total lease cost	7,783	22,693
Operating cash flows from finance leases	1,146	3,589
Operating cash flows from operating leases	6,167	17,824
Financing cash flows from finance leases	210	644
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 20,096	$ 26,421
Weighted-average remaining lease term—finance leases (Year)	3 years	3 years
Weighted-average remaining lease term—operating leases (Year)	3 years 182 days	3 years 182 days
Weighted-average discount rate—finance leases	3.00%	3.00%
Weighted-average discount rate—operating leases	5.00%	5.00%

X

- Definition

Amount of interest expense on finance lease liability.

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Amount of amortization expense attributable to right-of-use asset from finance lease.

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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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