Note 13 - Leases - Future Minimum Lease Payment (Details)	Mar. 31, 2019 USD ($)
Remaining nine months of 2019	$ 594,000
2020	797,000
2021	776,000
2022	670,000
2023	676,000
Thereafter	135,000
Total future minimum lease payments	3,648,000
Less imputed interest	(353,000)
Total Lease liabilities	$ 3,295,000