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Note 13 - Stockholders's Equity: (Detail) - Unaudited table summarizes stockholders’ equity transactions: (USD $) | 0 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 15, 2011 | Sep. 30, 2012 | Mar. 31, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 29, 2012 | Jan. 23, 2012 | Dec. 30, 2011
Balance (in Shares) |  | 44,249,184 |  |  | 44,249,184 |  | 44,249,184 | 46,047,053 | 53,497,584
Balance |  | $ 10,005,229 |  |  | $ 10,005,229 |  | $ 10,005,229 |  | $ 11,358,959
Balance |  | 33,887,740 |  |  | 33,887,740 |  | 33,887,740 |  | 40,994,013
Balance |  | (17,939,368) |  |  | (17,939,368) |  | (17,939,368) |  | (21,933,985)
Balance |  | 25,953,601 |  |  | 25,953,601 |  | 25,953,601 |  | 30,418,987
Balance (in Shares) |  | 45,484,997 |  |  |  |  | 44,249,184 | 46,047,053 | 53,497,584
Balance |  | 10,233,628 | 11,358,959 |  | 11,358,959 |  | 10,005,229 |  | 11,358,959
Balance |  | 35,109,427 | 40,994,013 |  | 40,994,013 |  | 33,887,740 |  | 40,994,013
Balance |  | (19,574,368) | (21,933,985) |  | (21,933,985) |  | (17,939,368) |  | (21,933,985)
Balance |  | 25,768,687 | 30,418,987 |  | 30,418,987 |  | 25,953,601 |  | 30,418,987
Exercise of stock options (in Shares) |  | 20,187 |  | 22,583 | 693,340 | 29,833 |  |  |
Exercise of stock options |  | 22,781 |  |  | 634,558 |  |  |  |
Exercise of stock options |  | (8,595) |  |  | (270,660) |  |  |  |
Exercise of stock options |  | 14,186 |  |  | 363,898 |  |  |  |
Repurchase and cancellaion of shares (in Shares) |  | 1,255,900 | 7,570,236 | 0 | 2,371,204 | 0 |  |  |
Repurchase and cancellaion of shares | (5,829,082) |  | (5,829,082) |  |  |  |  |  |
Cancellation of restricted stock (in Shares) |  | (100) |  |  | (300) |  |  |  |
Stock-based compensation |  | 166,371 |  |  | 291,932 |  |  |  |
Stock-based compensation |  | 166,371 |  |  | 291,932 |  |  |  |
Net income for the period |  | 1,635,000 |  | (1,178,260) | 3,994,617 | 115,345 |  |  |
Net income for the period |  | 1,635,000 |  | (1,178,260) | 3,994,617 | 115,345 |  |  |
Normal Course Issuer Bid Member |  |  |  |  |  |  |  |  |
Repurchase and cancellaion of shares (in Shares) |  | (1,255,900) |  |  | (2,371,204) |  |  |  |
Repurchase and cancellaion of shares |  | (251,180) |  |  | (474,241) |  |  |  |
Repurchase and cancellaion of shares |  | (1,379,463) |  |  | (2,748,145) |  |  |  |
Repurchase and cancellaion of shares |  | (1,630,643) |  |  | (3,222,386) |  |  |  |
Dutch Auction Member |  |  |  |  |  |  |  |  |
Repurchase and cancellaion of shares (in Shares) |  |  |  |  | (7,570,236) |  |  |  |
Repurchase and cancellaion of shares |  |  |  |  | (1,514,047) |  |  |  |
Repurchase and cancellaion of shares |  |  |  |  | (4,379,400) |  |  |  |
Repurchase and cancellaion of shares |  |  |  |  | $ (5,893,447) |  |  |  |

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