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Note 10 - Common Shares | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Stockholders' Equity Note Disclosure [Text Block] | 10. Common shares: The Company ’s authorized common share capital is 250 million shares of common stock without nominal or par value. On December 31, 2017, there were 10,583,879 shares of common stock outstanding ( 2016: 10,461,574 ). Repurchase of common shares:
| (a) | Normal Course Issuer Bids:
On February 14, 2018, the Company announced that its Board of Directors approved a stock buyback program to repurchase up to $40 million of its common stock in the open market. Refer to Note 17 – Subsequent Events. On March 1, 2017, the Company announced that its Board of Directors approved a stock buyback program to repurchase up to $40 million of its common stock in the open market. Under this buyback program, the Company may repurchase up to $40 million of its common stock in the open market. No repurchases were made under the program which ended February 14, 2018. On February 9, 2016, the Company announced a stock buyback program. Under this buyback program, the Company may repurchase up to $40 million of its common stock in the open market. Purchases were made exclusively through the facilities of the NASDAQ Capital Market. The stock buyback program commenced on February 10, 2016 and terminated on February 9, 2017. The company repurchased 308,416 shares under this program during the year ended December 31, 2016 for a total $7.2 million. On February 11, 2015, the Company announced a stock buyback program. Under this buyback program, the Company may repurchase up to $20 million of the Company's common stock over the 12 -month period that commenced on February 11, 2015. The Company repurchased 231,047 shares under this program during the three months ended December 31, 2015 for a total of $5.4 million. The Company repurchased 868,549 shares under this program during the year ended December 31, 2015 for a total of $20.0 million. (b) Modified Dutch Tender Offers: On January 7, 2015, the Company successfully concluded a modified “Dutch auction tender offer” that was previously announced in December 2014. Under the terms of the offer, the Company repurchased an aggregate of 193,907 shares of its common stock at a purchase price of $18.50 per share, for a total of $3.6 million, excluding transaction costs of approximately $0.1 million. The purchase price and all transaction costs were funded from available cash. All shares purchased in the tender offer received the same price and all shares repurchased were immediately retired. (c ) Net Exercise of Stock Options Our current equity-based compensation plans include provisions that allow for the “net exercise” of stock options by all plan participants. In a net exercise, any required payroll taxes, federal withholding taxes and exercise price of the shares due from the option holder can be paid for by having the option holder tender back to the Company a number of shares at fair value equal to the amounts due. These transactions are accounted for by the Company as a purchase and retirement of shares and are included in the table on the following page as common stock received in connection with share-based compensation. The following table summarizes our share repurchase activity for the periods covered below:
|  | Year Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Common stock repurchased on the open market or through tender offer |  |  |  |  |  |  |  |  |  |  |  |
Number of shares |  |  | — |  |  |  | 308,416 |  |  |  | 1,062,456 |
Aggregate market value of shares (in thousands) |  | $ | — |  |  | $ | 7,180 |  |  | $ | 23,616 |
Average price per share |  | $ | — |  |  | $ | 23.28 |  |  | $ | 22.23 |
Common stock received in connection with share-based compensation |  |  |  |  |  |  |  |  |  |  |  |
Number of shares |  |  | 50,454 |  |  |  | 25,572 |  |  |  | 99,675 |
Aggregate market value of shares (in thousands) |  | $ | 2,602 |  |  | $ | 634 |  |  | $ | 2,335 |
Average price per share |  | $ | 51.58 |  |  | $ | 24.80 |  |  | $ | 23.42 |

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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