Note 9 - Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Disclosure Text Block [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 0	$ 0

Amount after tax of reclassification adjustments of other comprehensive income (loss).

No definition available.

Name:	us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration