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Note 7 - Loan Payable: (Detail) (USD $) | 1 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended |  | 12 Months Ended | 9 Months Ended |  | 9 Months Ended |  |  |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 23, 2012 | Nov. 11, 2011 | Jan. 31, 2013 | Aug. 31, 2011 | Feb. 16, 2010 | Sep. 30, 2012 | Dec. 31, 2012 Foreign Exchange Risk [Member] | Sep. 30, 2012 Operating Demand Loan [Member] | Dec. 31, 2012 Operating Demand Loan [Member] | Dec. 31, 2012 Maximum [Member] 2012 DLR Loan [Member] | Sep. 30, 2012 Stock Repurchase [Member] | Dec. 31, 2012 Aggregate Advances [Member] 2012 DLR Loan [Member] | Sep. 30, 2012 2012 DLR Loan [Member] | Dec. 31, 2012 2012 DLR Loan [Member] | Jul. 28, 2011 2012 DLR Loan [Member] | Dec. 31, 2012 2012 DLPR Loan [Member] | Mar. 31, 2012 2011 DLR [Member] | Dec. 31, 2012 DLR Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) | $ 4,000,000 |  |  |  |  |  | $ 3,500,000 |  | $ 1,000,000 | $ 14,000,000 |  |  |  | $ 14,000,000 |  |  | $ 4,000,000 |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  | 1.25% |  |  | 2.50% |  | 1.25% |  | 1.25% |  |
Line of Credit Facility, Increase, Additional Borrowings |  |  | 5,200,000 | 2,500,000 |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  | 0.20% |  |  |  |  |  |  |
Line of Credit Facility Maturity |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |
Line of Credit Facility, Current Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 |  |  |
Stock Repurchased During Period, Shares (in Shares) | 4,114,437 | 23,765 |  |  | 2,371,204 |  |  |  |  |  |  |  |  |  |  |  | 7,570,236 |
Share Price (in Dollars per share) | $ 1.50 | $ 0.78 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.77 |
Stock Repurchased During Period, Value (in Dollars) | 5,829,082 | 18,442 | 6,171,656 |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,829,082 |
Payments of Stock Issuance Costs |  |  | 110,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 64,000 |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,700,000
Line of Credit Facility, Covenant Period |  |  |  |  |  |  | 18 months |  |  |  |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  |  |  |  |  |  | 29,300,000 |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Monitoring Fee |  |  |  |  |  |  |  | 500 |  |  |  |  |  |  |  |  |  |
Line of Credit Facility Maximum Annual Capital Expenditure Ceiling |  |  |  |  |  | $ 3,600,000 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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