Note 8 - Derivative Financial Instruments (Detail) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Notional Amount of Interest Rate Derivatives	$ 13,500,000
Debt Instrument, Face Amount	50,000,000
Derivative [Member]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	300,000
Notional Amount of Interest Rate Derivatives	13,500,000	25,000,000
Derivative, Amount of Hedged Item		25,000,000
Debt Instrument, Face Amount		50,000,000
Derivative, Fixed Interest Rate		1.63%
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	100,000
Derivative [Member]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ 100,000