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Note 4 - Other Assets (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2012 Deferred Loan Costs [Member] | Dec. 31, 2011 Deferred Loan Costs [Member] | Dec. 31, 2010 Deferred Loan Costs [Member] | Dec. 31, 2011 Prepaid Rent [Member] | Dec. 31, 2010 Prepaid Rent [Member] | Dec. 31, 2009 Prepaid Rent [Member]
Amortization of Deferred Charges | $ 108,000 | $ 72,000 | $ 42,000 | $ 1,088,000 | $ 136,000 | $ 132,000

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- Definition The amount of amortization of deferred charges applied against earnings during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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