Note M - Leases - Operating Lease (Details) $ in Thousands	Jun. 30, 2019 USD ($)
2019 (remaining)	$ 142
2020	286
2021	292
2022	297
2023	302
Thereafter	101
Total undiscounted operating lease payments	1,420
Less: Imputed interest	(121)
Present value of operating lease liabilities	1,299
Right-of-use assets (recorded in other non-current assets)	1,299
Current lease liabilities (recorded in other current liabilities)	284
Long-term lease liabilities (recorded in other long-term liabilities)	1,015
Total operating lease liabilities	$ 1,299
Weighted-average remaining lease term for operating leases (in years) (Year)	4 years 302 days
Weighted-average discount rate for operating leases	3.80%