Impairment and Restructuring Charges	3 Months Ended
Jun. 30, 2021
Impairment and Restructuring Charges [Abstract]
Impairment and Restructuring Charges	6. Impairment and Restructuring Charges Long-lived Assets and Right of Use Assets Impairment. During the three months ended June 30, 2021, the Company recorded a $15,000 non-cash impairment charge for long-lived assets consisting of $15,000 for network equipment to reduce the carrying values to zero. During the three months ended June 30, 2020, the Company recorded a $29,000 non-cash impairment charge for long-lived assets consisting of $29,000 for network site costs to reduce the carrying values to zero. Restructuring Charges. December 2018 cost reductions. On December 31, 2018, the Company’s board of directors approved the following cost reduction actions: (i) the elimination of approximately 20 positions, or 30% of the Company’s workforce and (ii) the closure of its office in San Diego, California (collectively, the “December 2018 Cost-Reduction Actions”). For the three months ended June 30, 2020, the Company recorded an additional restructuring charge relating to the December 2018 Cost-Reduction Actions amounting to $14,000, related to employee severance and benefit costs. The Company did not incur restructuring charges for the quarter ending June 30, 2021.

Impairment and Restructuring Charges

3 Months Ended

Jun. 30, 2021

Impairment and Restructuring Charges [Abstract]

6. Impairment and Restructuring Charges

Long-lived Assets and Right of Use Assets Impairment.

During the three months ended June 30, 2021, the Company recorded a $15,000 non-cash impairment charge for long-lived assets consisting of $15,000 for network equipment to reduce the carrying values to zero. During the three months ended June 30, 2020, the Company recorded a $29,000 non-cash impairment charge for long-lived assets consisting of $29,000 for network site costs to reduce the carrying values to zero.

Restructuring Charges.

December 2018 cost reductions. On December 31, 2018, the Company’s board of directors approved the following cost reduction actions: (i) the elimination of approximately 20 positions, or 30% of the Company’s workforce and (ii) the closure of its office in San Diego, California (collectively, the “December 2018 Cost-Reduction Actions”). For the three months ended June 30, 2020, the Company recorded an additional restructuring charge relating to the December 2018 Cost-Reduction Actions amounting to $14,000, related to employee severance and benefit costs. The Company did not incur restructuring charges for the quarter ending June 30, 2021.