Note 12 - Commitments and Contingencies Lease Liability (Details) - USD ($)		3 Months Ended			6 Months Ended
		Jun. 30, 2019		Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018	Dec. 31, 2018
Operating Lease, Cost		$ 2,347,000			$ 4,666,000
Short-term Lease, Cost		52,000			75,000
Lease, Cost		2,399,000			4,741,000
Operating cash flows from operating leases		(2,639,000)			(5,276,000)
Operating Lease, Right-of-Use Asset	[2]	44,844,000	[1]		44,844,000	[1]		$ 0
Operating lease liabilities	[3]	$ 68,359,000			$ 68,359,000
Weighted-average remaining lease term - operating leases (in years)		10 years 2 months 19 days			10 years 2 months 19 days
Weighted-average discount rate - operating leases		6.76%			6.76%
Remaining maturities of lease liabilities for 2019		$ 5,234,000			$ 5,234,000
Remaining maturities of lease liabilities for 2020		10,424,000			10,424,000
Remaining maturities of lease liabilities for 2021		9,961,000			9,961,000
Remaining maturities of lease liabilities for 2022		10,136,000			10,136,000
Remaining maturities of lease liabilities for 2023		10,275,000			10,275,000
Remaining maturities of lease liabilities for 2024 and thereafter		56,542,000			56,542,000
Total lease payments		102,572,000			102,572,000
Less: Imputed interest		$ (34,213,000)			$ (34,213,000)
Rent expense pursuant to previous lease accounting standard				$ 2,200,000			$ 4,300,000
Commitment for non-cancelable leases in 2019								11,310,000
Commitment for non-cancelable leases in 2020								10,847,000
Commitment for non-cancelable leases in 2021								10,165,000
Commitment for non-cancelable leases in 2022								10,100,000
Commitment for non-cancelable leases in 2023								10,251,000
Commitment for non-cancelable leases in 2024 and thereafter								56,317,000
Total								108,990,000
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals								$ 0
Minimum
Lessee, Operating Lease, Discount Rate		4.22%			4.22%
Maximum
Lessee, Operating Lease, Discount Rate		7.08%			7.08%

[1] Classified in other assets in our condensed consolidated balance sheets. See Note 8.

[2] Represents right-of-use assets recognized as a result of our adoption, as of January 1, 2019, of the new accounting and disclosure requirements for leases of property, plant and equipment. See Note 1 for additional information. Right-of-use assets are shown less accumulated amortization of $4.6 million at June 30, 2019.

[3] Classified in other liabilities in our condensed consolidated balance sheets.