7. Share-based Compensation (Details) (Employee Stock Option [Member], USD $)	3 Months Ended
Mar. 31, 2015
Employee Stock Option [Member]
Number of Shares
Outstanding at beginning of year, Shares	1,390,770
Exercised, Shares	(22,242)
Outstanding at March 31, 2015	1,368,528
Stock options exercisable at March 31, 2015	1,233,272
Wtd. Avg Exercise Price
Outstanding at beginning of year, Wtd. Avg. Shares Exercise Price	$ 1.50
Exercised, Wtd. Avg. Shares Exercise Price	$ 1.12
Outstanding at March 31, 2015, Wtd. Avg. Shares Exercise Price	$ 1.51
Stock options exercisable at March 31, 2015, Wtd. Avg. Shares Exercise Price	$ 1.34

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.

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.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Number of share options (or share units) exercised during the current period.

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