Note 21 —Reportable Segments and Geographic Information

Disclosures are required for certain information regarding operating segments, products and services, geographic areas of operation and major customers. Segment reporting is based upon the “management approach,” which assesses, how management organizes the Company’s operating segments for which separate financial information is (1) available and (2) evaluated regularly by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources and in assessing performance. The Company’s CODM is its Chief Executive Officer.

The Company operates in a single segment to sell natural gas. In making operating decisions, the CODM primarily considers consolidated financial information, accompanied by volumes delivered information. The assessment of operating results and the allocation of resources among the components of the business are made by the CODM and are based on gross margins and volumes delivered by market sector and volume type. Contracts are evaluated based on the economics of a mix of products and services for a customer.

The table below presents the Company’s revenue, operating income (loss) and long-lived assets by geographic area (in thousands). Several of the Company’s functions, including marketing, engineering, and finance are performed at the corporate level. As a result, significant interdependence and overlap exists among the Company’s geographic areas. Geographic revenue data reflect internal allocations and are therefore subject to certain assumptions and the Company’s methodology. Accordingly, revenue, operating income (loss), and long-lived assets shown for each geographic area may not be the amounts that would have been reported if the geographic areas were independent of one another. Revenue by geographic area is categorized based on where services are rendered and finished goods are sold. Operating income (loss) by geographic area is categorized based on the location of the entity selling the finished goods or providing the services. Long-lived assets by geographic are categorized based on the location of the assets.


	2017		2018		2019
Revenue:
United States	$	316,756	$	337,531	$	338,549
Canada		6,846		8,888		5,516
Other		17,997		—		—
Total revenue	$	341,599	$	346,419	$	344,065
Operating income (loss):
United States	$	(96,228)	$	3,548	$	10,805
Canada		(9,495)		347		(877)
Other		(28,724)		—		—
Total operating income (loss)	$	(134,447)	$	3,895	$	9,928
Long-lived assets:
United States	$	465,245	$	442,897	$	415,548
Canada		373		285		226
Other		—		—		—
Total long-lived assets	$	465,618	$	443,182	$	415,774

The Company’s goodwill and intangible assets as of December 31, 2017, 2018, and 2019 relate to its United States operations, and its subsidiaries, Clean Energy Cryogenics and NG Advantage (see Note 5).