Note 11 - Derivative Financial Instruments (Detail) - Derivative financial instruments: (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Notional Amount	$ 118,000
Notional Amount	122,280	122,300
Purchase Price	9,035	9,035
Net Carrying Value	(1,071)	(1,900)
Interest Rate Cap [Member]
Notional Amount	100,000	100,000
Purchase Price	9,035	9,035
Net Carrying Value	16	19
Interest Rate Swap [Member]
Notional Amount	18,000	18,000
Net Carrying Value	(1,138)	(1,922)
Notional Amount	4,280	4,300
Net Carrying Value	$ 51	$ 3