Earnings per share (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2018 and 2017.

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
	(Unaudited)		(Unaudited)		(Unaudited)		(Unaudited)
	$		$		$		$
Numerator:
Net income attributable to the Company		2,714,315		4,371,237		1,595,379		6,906,886

Denominator:
Weighted-average shares outstanding
- Basic		15,556,361		15,317,101		15,533,139		15,218,820
- Dilutive effects of equity incentive awards		73,052		162,256		86,632		85,953
- Diluted		15,629,413		15,479,357		15,619,771		15,304,773

Net income per share:
- Basic		0.17		0.29		0.10		0.45
- Diluted		0.17		0.28		0.10		0.45