SEGMENT REPORTING

The Company's reportable business segments are: Service Centers, Innovative Pumping Solutions and Supply Chain Services. The Service Centers segment is engaged in providing maintenance, MRO products, equipment and integrated services, including logistics capabilities, to industrial customers. The Service Centers segment provides a wide range of MRO products in the rotating equipment, bearing, power transmission, hose, fluid power, metal working, fastener, industrial supply, safety products and safety services categories. The Innovative Pumping Solutions segment fabricates and assembles custom-made pump packages, remanufactures pumps and manufactures branded private label pumps. The Supply Chain Services segment provides a wide range of MRO products and manages all or part of a customer's supply chain, including warehouse and inventory management.

The high degree of integration of the Company's operations necessitates the use of a substantial number of allocations and apportionments in the determination of business segment information. Sales are shown net of intersegment eliminations.

The following table sets out financial information related to the Company's segments excluding amortization (in thousands):



	Three Months Ended September 30,
	2019								2018
	SC		IPS		SCS		Total		SC		IPS		SCS		Total
Product sales (recognized at a point in time)	$	178,841	$	—	$	46,998	$	225,839	$	173,022	$	—	$	40,210	$	213,232
Inventory management services (recognized over contract life)	—		—		4,284		$	4,284	—		—		3,393		$	3,393
Staffing services (day-rate basis)	14,886		—		—		$	14,886	14,741		—		—		$	14,741
Customized pump production (recognized over time)	—		82,169		—		$	82,169	—		76,662		—		$	76,662
Total Revenue	$	193,727	$	82,169	$	51,282	$	327,178	$	187,763	$	76,662	$	43,603	$	308,028
Income from operations	$	25,071	$	10,097	$	3,110	$	38,278	$	20,590	$	8,773	$	3,886	$	33,249



	Nine Months Ended September 30,
	2019								2018
	SC		IPS		SCS		Total		SC		IPS		SCS		Total
Product sales (recognized at a point in time)	$	534,953	$	—	$	141,768	$	676,721	$	509,756	$	—	$	120,040	$	629,796
Inventory management services (recognized over contract life)	—		—		12,149		$	12,149	—		—		9,890		$	9,890
Staffing services (day-rate basis)	44,931		—		—		$	44,931	46,944		—		—		$	46,944
Customized pump production (recognized over time)	—		237,920		—		$	237,920	—		218,561		—		$	218,561
Total Revenue	$	579,884	$	237,920	$	153,917	$	971,721	$	556,700	$	218,561	$	129,930	$	905,191
Income from operations	$	67,281	$	28,924	$	10,980	$	107,185	58,353		24,109		12,196		$	94,658

The following table presents reconciliations of operating income for reportable segments to the consolidated income before taxes (in thousands):



	Three Months Ended September 30,					Nine Months Ended September 30,
	2019			2018		2019		2018
Operating income for reportable segments	$	38,278		$	33,249	$	107,185	$	94,658
Adjustment for:
Amortization of intangible assets	3,806			4,098		11,424		12,575
Corporate expenses	12,755			12,338		36,381		34,061
Income from operations	$	21,717		$	16,813	59,380		48,022
Interest expense	4,986			4,781		14,911		15,959
Other income, net	(25		)	120		127		(1,318		)
Income before income taxes	$	16,756		$	11,912	$	44,342	$	33,381

The Company's identifiable assets by segments are as follows (in thousands):



	As of September 30, 2019		As of December 31, 2018
Service Centers	$	458,975	$	402,944
Innovative Pumping Solutions	225,361		188,765
Supply Chain Services	60,342		53,517
Total Identifiable Assets	$	744,678	$	645,226

The Company had identifiable assets at Corporate of $46.9 million and $54.7 million, as of September 30, 2019 and December 31, 2018.