Note 10 - Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Year 1, operating leases	$ 7,428
Year 1, financing leases	312
Year 2, operating leases	7,351
Year 2, financing leases	320
Year 3, operating leases	7,231
Year 3, financing leases	329
Year 4, operating leases	7,175
Year 4, financing leases	338
Year 5, operating leases	6,960
Year 5, financing leases	347
2024 and thereafter, operating leases	161,286
2024 and thereafter, financing leases	3,740
Total lease payments, operating leases	197,431
Total lease payments, financing leases	5,386
Less imputed interest, operating leases	(116,765)
Less imputed interest, financing leases	(2,627)
Total present value of lease obligations, operating leases	80,666
Total present value of lease obligations, financing leases	2,759
Present value of current obligations, operating leases	(2,004)
Present value of current obligations, financing leases	(42)
Present value of long-term obligations, operating leases	78,662
Present value of long-term obligations, financing leases	$ 2,717