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Earnings Per Share (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator:
Net income attributable to common shareholders	$ 286,320	$ 854,709
Denominator:
Weighted-average shares outstanding – basic (in shares)	17,907,848	18,758,383
Dilutive effect of other securities (in shares)	253,832	166,782
Weighted-average shares outstanding – diluted (in shares)	18,161,680	18,925,165

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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