Quarterly Financial Information (unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information (unaudited)

Schedule of quarterly financial information

Quarterly financial information for fiscal 2017 and 2016 are presented in the following table, in thousands of dollars, except per share data, unaudited:

	1st Quarter		2nd Quarter		3rd Quarter		4th Quarter
2017
Revenue	$	57,576	$	75,829	$	80,398	$	88,435
Total costs and expenses		40,788		49,762		58,056		54,091
Operating earnings		16,788		26,067		22,342		34,344
Net earnings		10,297		17,368		15,961		13,658
Net earnings per share, basic		0.21		0.34		0.31		0.27
Net earnings per share, diluted		0.19		0.32		0.29		0.26
2016
Revenue	$	44,194	$	51,626	$	56,810	$	62,374
Total costs and expenses		37,757		39,981		36,971		46,078
Operating earnings		6,437		11,645		19,839		16,296
Net earnings		4,825		10,251		61,826		14,320
Net earnings per share, basic		0.10		0.21		1.25		0.29
Net earnings per share, diluted		0.08		0.18		1.18		0.26