v3.19.3
Note 7 - Leases (Details Textual)
xbrli-pure in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Operating Lease, Expense $ 98,000 $ 165,000 $ 115,000 $ 232,000 $ 225,000
Finance Lease, Liability, Total $ 0 $ 0      
Lessee, Operating Lease, Not yet Commenced 0 0      
Lessee, Finance Lease, Not yet Commenced 0 0      
Sublease Income   $ 42,000