Note 11 - Leases - Reconciliation of Undiscounted Cash Flows to Operating and Finance Lease Liabilities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
2019	$ 4,746
2020	5,142
2021	5,068
2022	4,972
2023	4,977
2024+	26,428
Total undiscounted cash flows	51,333
Present values ("PV"):
Lease liabilities, current	2,937
Lease liabilities, non-current	33,840
Total PV of lease liabilities	36,777
Difference between undiscounted cash flows and discounted cash flows	14,556
Finance Leases
2019	1,126
2020	1,033
2021	596
2022	201
2023	43
Total undiscounted cash flows	2,999
Present values ("PV"):
Lease liabilities, current	1,118
Lease liabilities, non-current	1,132
Total PV of lease liabilities	2,250
Difference between undiscounted cash flows and discounted cash flows	$ 749