Note 17 - Fair Value Measurements - Recurring Financial Assets and Liabilities Subject to Fair Value Measurements (Details) - Fair Value, Recurring [Member] $ in Thousands	Dec. 31, 2018 USD ($)
Interest Rate Swap [Member]
Interest rate swap assets	$ 44
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]
Interest rate swap assets
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Interest rate swap assets	44
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Interest rate swap assets
Swap [Member]
Total swap assets	44
Swap [Member] | Fair Value, Inputs, Level 1 [Member]
Total swap assets
Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Total swap assets	44
Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Total swap assets