Segment information is prepared on the same basis that management reviews financial information for operational decision-making purposes. Beginning with the quarter ended March 31, 2019, the Operating Company had a change in reportable segments due to the Canadian operations becoming a significant part of the business. As of September 30, 2019, the Company had two reportable segments: (1) U.S. and (2) Canada. The U.S. operating segment is comprised of the Company’s U.S. operations while the Canadian operating segment is comprised of the Company’s Canadian operations. The reportable segments identified are the business activities of the Company for which discrete financial information is available and for which operating results are regularly reviewed by the Company’s chief operating decision maker to allocate resources and assess performance.

Concurrent with the change in reportable operating segments, the Company recast its prior period financial information to reflect comparable financial information for the new segment structure. Historical financial information presented herein reflects this change.

The table below provides information on revenues from external customers, intersegment revenues, and segment income for the reportable segments for the three and nine months ended September 30, 2019 and 2018. Intersegment revenues are eliminated in consolidation.


	Three Months Ended September 30, 2019										Three Months Ended September 30, 2018
	United States		Canada		Total		United States		Canada		Total
	(in thousands)										(in thousands)
Revenues from external customers	$	38,597	$	6,289	$	44,886	$	40,576	$	2,985	$	43,561
Intercompany revenues	1,392		23		1,415		898		62		960
Segment operating (loss) income	(2,827)		200		(2,627)		504		188		692


	Nine Months Ended September 30, 2019										Nine Months Ended September 30, 2018
	United States		Canada		Total		United States		Canada		Total
	(in thousands)										(in thousands)
Revenues from external customers	$	129,017	$	18,753	$	147,770	$	120,665	$	6,714	$	127,379
Intercompany revenues	2,910		105		3,015		2,742		149		2,891
Segment operating (loss) income	(5,077)		(38)		(5,115)		3,798		288		4,086

The following is a reconciliation of total loss for the reportable segments to consolidated income (loss) from continuing operations before income taxes. “Corporate and other income (loss)” is comprised of unallocated corporate overhead expenses.


	Three Months Ended September 30,						Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)
Total segment (loss) income for reportable segments	$	(2,627)	$	692	$	(5,115)	$	4,086
Corporate and other loss	(2,898)		(357)		(9,511)		(1,075)
Interest expense	(119)		(136)		(862)		(296)
Change in fair value of convertible notes payable	—		—		(12,063)		—
Other income (expense), net	7,746		(141)		8,670		18
Income (loss) from continuing operations before income taxes	$	2,102	$	58	$	(18,881)	$	2,733

No single customer represented more than 10% of the Company’s net sales for the three months ended September 30, 2019 and September 30, 2018, and for the nine months ended September 30, 2019 and 2018, respectively. As of September 30, 2019, one customer represented approximately 18.2% of the Company’s accounts receivable balances. No other single customers represented more than 10% of the accounts receivable balance as of September 30, 2019. As of December 31, 2018, no single customer represented more than 10% of the Company’s accounts receivable balance.