Earnings Per Share

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Earnings Per Share

6. EARNINGS PER SHARE

The components of basic and diluted earnings per share for the quarter and six months ended June 30, 2015 and 2014 are as follows:

	Quarter Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
	(Thousands of dollars)
Weighted average outstanding shares of common stock, basic		15,574		15,482		15,574		15,482
Dilutive effect of unvested restricted stock units		116		214		105		113
Weighted average outstanding shares of common stock, diluted		15,690		15,696		15,679		15,595