Capital Stock (Textual) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Equity [Abstract]
Stock options exercised	323,981	100,030
Weighted average exercise price of stock options exercised	$ 2.58	$ 1.95
Proceeds from exercises of stock options	$ 837	$ 195