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Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions (USD $) | 3 Months Ended | 9 Months Ended |
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Jan. 31, 2013
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Common stock (in Shares) |  |  |  |  | 40,226,875
Common stock, amount |  |  | $ 10,084,417 |  |
Additional paid-in capital |  |  | 33,931,529 |  |
Deficit |  |  | (17,509,843) |  |
Accumulated Other Comprehensive Income |  |  | 44,104 |  |
Total stockholders' equity | 20,714,365 |  | 26,550,207 |  |
Exercise of stock options (in Shares) | 2,935,373 | 20,187 | 3,511,946 | 693,340 |
Exercise of stock options | 1,136,061 |  | 1,454,255 |  |
Common stock - Amount |  |  | 6,277,741 |  |
Total stockholders equity |  |  | (6,277,741) |  |
Stock-based compensation | 162,786 |  | 328,883 |  |
Excess tax benefit from stock based payment arrangements | 1,056,014 |  | 1,056,014 |  |
Net income for the period | 2,593,360 | 1,635,000 | 3,257,569 | 3,994,617 |
Net income for the period | 2,593,360 | 1,635,000 | 3,257,569 | 3,994,617 |
Unrealized loss on foreign currency forward contracts treated as hedges | 506,509 |  | 63,942 |  |
Reclassification to net income due to settlement of foreign currency forward contracts treated as hedges | (12,175) |  | (16,334) |  |
Reclassification to net income due to settlement of foreign currency forward contracts treated as hedges | (12,175) |  | (16,334) |  |
Common stock (in Shares) |  |  |  |  | 40,226,875
Common stock, amount | 11,797,362 |  | 11,797,362 |  |
Additional paid-in capital | 28,520,120 |  | 28,520,120 |  |
Deficit | (14,252,274) |  | (14,252,274) |  |
Accumulated Other Comprehensive Income | 91,712 |  | 91,712 |  |
Total stockholders' equity | 26,156,920 |  | 26,156,920 |  |
Common Stock [Member] | Normal Course Issuer Bid Member |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Common stock - Number (in Shares) |  |  | (143,073) |  |
Common stock - Amount |  |  | (28,615) |  |
Total stockholders equity |  |  | 28,615 |  |
Common Stock [Member] |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Common stock (in Shares) | 40,641,488 |  | 44,322,159 |  |
Common stock, amount | 9,755,391 |  | 10,084,417 |  |
Cancellation of restricted stock (in Shares) |  |  | (50) |  |
Exercise of stock options (in Shares) | 2,935,373 |  | 3,511,946 |  |
Exercise of stock options, amount | 2,041,971 |  | 2,564,447 |  |
Common stock - Number (in Shares) |  |  | (4,114,121) |  |
Common stock - Amount |  |  | (822,887) |  |
Total stockholders equity |  |  | 822,887 |  |
Common stock (in Shares) | 43,576,861 |  | 43,576,861 |  |
Common stock, amount | 11,797,362 |  | 11,797,362 |  |
Additional Paid-in Capital [Member] | Normal Course Issuer Bid Member |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Additional paid in capital |  |  | (231,260) |  |
Additional Paid-in Capital [Member] |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Additional paid-in capital | 28,207,230 |  | 33,931,529 |  |
Exercise of stock options | (905,910) |  | (1,110,192) |  |
Additional paid in capital |  |  | (5,454,854) |  |
Stock-based compensation | 162,786 |  | 328,883 |  |
Excess tax benefit from stock based payment arrangements | 1,056,014 |  | 1,056,014 |  |
Additional paid-in capital | 28,520,120 |  | 28,520,120 |  |
Retained Earnings [Member] |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Deficit | (16,845,634) |  | (17,509,843) |  |
Net income for the period | 2,593,360 |  | 3,257,569 |  |
Net income for the period | 2,593,360 |  | 3,257,569 |  |
Deficit | (14,252,274) |  | (14,252,274) |  |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Accumulated Other Comprehensive Income | (402,622) |  | 44,104 |  |
Unrealized loss on foreign currency forward contracts treated as hedges | 506,509 |  | 63,942 |  |
Reclassification to net income due to settlement of foreign currency forward contracts treated as hedges | (12,175) |  | (16,334) |  |
Reclassification to net income due to settlement of foreign currency forward contracts treated as hedges | (12,175) |  | (16,334) |  |
Accumulated Other Comprehensive Income | 91,712 |  | 91,712 |  |
Normal Course Issuer Bid Member |  |  |  |  |
Note 11 - Stockholders's Equity: (Details) - Stockholders’ equity transactions [Line Items] |  |  |  |  |
Common stock - Amount |  |  | 259,875 |  |
Total stockholders equity |  |  | $ (259,875) |  |

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + 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 210.5-02.29) -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 30 -Article 5 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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