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Note 8 - Leases - Lease Obligations (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Amortization of right-of-use assets	$ 1,408	$ 2,819
Interest on lease liabilities	206	433
Operating lease cost	5,475	11,657
Total lease cost	7,089	14,909
Operating cash flows from finance leases	1,297	2,443
Operating cash flows from operating leases	5,475	11,657
Financing cash flows from finance leases	206	433
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 3,089	$ 6,325
Weighted-average remaining lease term—finance leases (Year)	3 years 146 days	3 years 146 days
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	4.40%	4.40%

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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