Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Reconciliation of Effects of Reclassification on Statements of Income

The following is a reconciliation of the effect of the reclassification (in thousands) of the net benefit cost in the Company’s condensed consolidated statements of income for the three and six months ended June 30, 2017. In addition, the table reflects the effect of the reclassification between product sales and services sales to conform to the current year's presentation for the three and six months ended June 30, 2017:



	Three Months Ended June 30, 2017
	As Previously Reported		Services Reclassifications			ASU 2017-07 Adjustments			As Revised
Product Sales	$	246,022	$	(10,131	)	$	—		$	235,891
Service Sales	44,443		10,131			—			54,574
Total sales	290,465		—			—			290,465
Product cost of sales	164,025		(1,340		)	(447		)	162,238
Service cost of sales	33,386		1,340			—			34,726
Total cost of sales (excluding depreciation, depletion and amortization)	197,411		—			(447		)	196,964
Selling, general and administrative expenses	26,012		—			(173		)	25,839
Operating income	43,416		—			620			44,036
Other income (expense)	1,258		—			(620		)	638



	Six Months Ended June 30, 2017
	As Previously Reported			Services Reclassifications			ASU 2017-07 Adjustments			As Revised
Product Sales	$	455,343		$	(16,200	)	$	—		$	439,143
Service Sales	79,919			16,200			—			96,119
Total sales	535,262			—			—			535,262
Product cost of sales	326,662			(1,794		)	(734		)	324,134
Service cost of sales	58,224			1,794			—			60,018
Total cost of sales (excluding depreciation, depletion and amortization)	384,886			—			(734		)	384,152
Selling, general and administrative expenses	48,353			—			(375		)	47,978
Operating income	56,798			—			1,109			57,907
Other income (expense)	(3,670		)	—			(1,109		)	(4,779		)