Revenue Recognition

6 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

The Company’s principal sales are from Wireless services, sales of Telco equipment and Telco recycled equipment, primarily in the United States. Sales to international customers totaled approximately $0.9 million and $0.4 million for the three months ended March 31, 2021 and 2020, respectively and $1.3 million and $0.8 million for the six month period ended March 31, 2021 and 2020, respectively.

The Company’s customers include wireless carriers, wireless equipment providers, multiple system operators, resellers and direct sales to end-user customers. Sales to three customers which individually accounted 10% or greater of the Company's revenue totaled 39% and sales to one customer comprised approximately 10% of consolidated revenues for the six months ended March 31, 2021 and 2020, respectively.

Our sales by type were as follows, in thousands:

	Three Months Ended March 31,				Six Months Ended March 31,
	2021		2020		2021		2020
Wireless services sales	$	4,334	$	4,672	$	9,581	$	11,470
Equipment sales:
Telco	8,189		6,981		15,464		13,764
Telco repair sales	7		8		13		16
Telco recycle sales	137		298		358		671
Total sales	$	12,667	$	11,959	$	25,416	$	25,921

Contract assets and contract liabilities are included in unbilled revenue and deferred revenue, respectively, in the consolidated balance sheets. At March 31, 2021 and September 30, 2020, contract assets were $0.6 million and $0.6 million, respectively, and contract liabilities were $0.1 million and $0.1 million, respectively. The Company recognized $0.1 million of contract revenue during the six months ended March 31, 2021 related to contract liabilities recorded in deferred revenue at September 30, 2020.