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Note 5 - Debt (Detail) - Credit facility amended variable interest rate table	Dec. 31, 2012
Outstanding Indebtedness	3.00%
Greater Than $10,000 [Member]
Outstanding Indebtedness	3.00%
Greater Than $6,000 But Less Than Or Equal To $10,000 [Member]
Outstanding Indebtedness	3.25%
Greater Than $3,000 But Less Than Or Equal To $6,000 [Member]
Outstanding Indebtedness	3.50%

X

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant