Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Derivative, Average Cap Interest Rate	3.28%
Interest Rate Fair Value Hedge Derivative at Fair Value, Net	$ 400,000		$ 1,100,000
Interest Expense	7,383,000	6,328,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	4,471,000	2,057,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	900,000	600,000
Increase As Hedged Forecasted Interest Payments Occur [Member]
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Interest Expense	3,700,000
Accrued Interest [Member]
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Interest Rate Fair Value Hedge Derivative at Fair Value, Net	300,000		300,000
Prepaid Expenses and Other Current Assets [Member]
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	2,100,000		2,800,000
Accounts Payable and Accrued Liabilities [Member]
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Interest Rate Fair Value Hedge Liability at Fair Value	1,700,000		1,700,000
Cash Flow Hedge [Member]
Note 6 - Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) [Line Items]
Derivative, Notional Amount	$ 326,700,000