Note 14 - Fair Value of Financial Instruments (Details Textual)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) Derivative
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of derivative financial instruments held | Derivative		0
Variable Interest Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument, fair value	$ 94,600,000	$ 3,000,000
Fixed Interest Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument, fair value	17,200,000	1,700,000
Debt instrument, estimated fair value	17,200,000	$ 1,800,000
Interest Rate Swap [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of interest rate swap liability	100,000
Maximum [Member] | Interest Rate Cap [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of interest rate cap assets	$ 100,000