The Company operates in one segment for the manufacture and marketing of controlled motion products for end user and OEM applications. The Company’s chief operating decision maker is the Chief Executive Officer, who reviews operating results to make decisions about allocating resources and assessing performance for the entire Company. Existing guidance, which is based on a management approach to segment reporting, establishes requirements to report selected segment information quarterly and to report annually entity-wide disclosures about products and services in which the entity holds material assets and reports revenue.

Financial information related to the foreign subsidiaries is summarized below (in thousands):


	Three months ended
	March 31,
	2021		2020
Revenues derived from foreign subsidiaries	$	45,035	$	36,013

Revenues derived from foreign subsidiaries and identifiable assets outside of the United States are attributable to Europe and Asia-Pacific.

Identifiable foreign assets were $133,775 and $133,466 as of March 31, 2021 and December 31, 2020, respectively.

Sales to customers outside of the United States by all subsidiaries were $49,655 and $43,389 during the three months ended March 31, 2021 and 2020, respectively.

For the three months ended March 31, 2021 and 2020, one customer accounted for 16% and 13% of revenues, respectively. As of March 31, 2021 and December 31, 2020 this customer represented 19% and 22% of trade receivables, respectively.