CAPITAL STOCK - Schedule Of Stock Option Activity (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Notes to Financial Statements
Outstanding at beginning of period	1,321,232	1,245,161	1,448,675
Outstanding at begining of period, Weighted Average Exercise Price	$ 10.386	$ 11.054	$ 10.425
Granted at market, options	134,800	275,654	137,950
Granted at market, Weighted Average Exercise Price	$ 16.398	$ 7.532	$ 9.534
Cancelled, Options	(218,926)	(166,286)	(118,330)
Cancelled, Weighted Average Excercise Price	$ 17.786	$ 11.437	$ 11.373
Exercised, Options	$ (162,855)	$ (33,297)	$ (223,134)
Exercised, Weighted Average Exercise Price	$ 7.234	$ 6.488	$ 5.863
Outstanding at end of period, Options	1,074,251	1,321,232	1,245,161
Outstanding at end of period, Weighted Average Exercise Price	$ 10.110	$ 10.386	$ 11.054
Exercisable at end of period, Options	729,175	939,458	971,029
Exercisable at end of period, Weighted Average Exercise Price	$ 9.800	$ 11.556	$ 12.129

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

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Weighted average price of options that were either forfeited or expired.

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-Publisher FASB

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-SubTopic 10

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-Subparagraph (c)(1)(iv)(3)-(4)

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- Definition

Net number of share options (or share units) granted during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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Weighted average price at which grantees could acquire or could have acquired the underlying shares with respect to any other type of change in shares reserved for issuance.

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No definition available.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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