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Revenue from Contracts with Customers (ASC 606)
 6 Months Ended
Jun. 30, 2022
Revenue from Contract with Customer [Abstract]  
Revenue from Contracts with Customers (ASC 606) Revenue from Contracts with Customers (ASC 606)In accordance with ASC 606, revenue is recognized when a customer obtains control of promised products and services. The amount of revenue recognized reflects the consideration which the Company expects to be entitled to receive in exchange for these products and services.
Disaggregation of Revenue

The following table summarizes net sales from contracts with customers for the three and six months ended June 30, 2022 and 2021:

Three Months EndedSix Months Ended
June 30,June 30,
2022202120222021
Mobile connectivity product, transferred at point in time$5,976 $7,292 $12,083 $13,380 
Mobile connectivity product, transferred over time644 754 1,100 1,557 
Mobile connectivity service 27,933 25,709 54,521 49,325 
Inertial navigation product6,959 9,223 14,766 20,764 
Inertial navigation service325 385 461 629 
 Total net sales$41,837 $43,363 $82,931 $85,655 

Revenue recognized during the three months ended June 30, 2022 and 2021 from amounts included in contract liabilities at the beginning of the period was $621 and $696, respectively. Revenue recognized during the six months ended June 30, 2022 and 2021 from amounts included in contract liabilities at the beginning of the period was $1,073 and $1,469, respectively.

For mobile connectivity product sales, the delivery of the Company’s performance obligations are generally transferred to the customer, and associated revenue is recognized, at a point in time, with the exception of certain mini-VSAT contracts which are transferred to customers over time. For mobile connectivity service sales, the delivery of the Company’s performance obligations are transferred to the customer, and associated revenue is recognized, over time. For inertial navigation product sales, the delivery of the Company’s performance obligations are generally transferred to the customer, and associated revenue is recognized, at a point in time. For inertial navigation service sales, the Company's performance obligations are generally transferred to customers, and associated revenue is recognized, over time.

Business and Credit Concentrations

Concentrations of risk with respect to trade accounts receivable are generally limited due to the large number of customers and their dispersion across several geographic areas. Although the Company does not foresee that credit risk associated with these receivables will deviate from historical experience, repayment is dependent upon the financial stability of those individual customers. The Company establishes allowances for potential bad debts and evaluates, on a monthly basis, the adequacy of those reserves based upon historical experience and its expectations for future collectability concerns. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral. 

No single customer accounted for 10% or more of consolidated net sales for the six months ended June 30, 2022 or 2021 or accounts receivable at June 30, 2022 or December 31, 2021.

Certain components from third parties used in the Company’s products are procured from single sources of supply. The failure of a supplier, including a subcontractor, to deliver on schedule could delay or interrupt the Company’s delivery of products and thereby materially adversely affect the Company’s revenues and operating results.