Prepaid Commission Expense	9 Months Ended
Sep. 30, 2022
Amortization Of Deferred Charges [Abstract]
Prepaid Commission Expense	10. PREPAID COMMISSION EXPENSE The Company pays a commission on both NeuroStar Advanced System sales and Treatment Session sales. Since the commission paid for System sales is not commensurate with the commission paid for Treatment Sessions, the Company capitalizes commission expense associated with NeuroStar Advanced Therapy System sales commissions paid that is incremental to specifically anticipated future Treatment Session orders. In developing this estimate, the Company considered its historical Treatment Session sales and customer retention rates, as well as technology development life cycles and other industry factors. These costs are periodically reviewed for impairment. NeuroStar Advanced Therapy System commissions are deferred and amortized on a straight-line basis over a seven-year period equal to the average customer term, which the Company deems to be the expected period of benefit for these costs. On the Company’s balance sheets, the current portion of capitalized contract costs is represented by the current portion of prepaid commission expense, while the long-term portion is included in prepaid commission expense. Amortization expense was $0.5 million and $0.3 million for the three months ended September 30, 2022 and 2021, respectively, and $1.3 million and $0.9 million for the nine months ended September 30, 2022 and 2021, respectively.

Prepaid Commission Expense

9 Months Ended

Sep. 30, 2022

Amortization Of Deferred Charges [Abstract]

10. PREPAID COMMISSION EXPENSE

The Company pays a commission on both NeuroStar Advanced System sales and Treatment Session sales. Since the commission paid for System sales is not commensurate with the commission paid for Treatment Sessions, the Company capitalizes commission expense associated with NeuroStar Advanced Therapy System sales commissions paid that is incremental to specifically anticipated future Treatment Session orders. In developing this estimate, the Company considered its historical Treatment Session sales and customer retention rates, as well as technology development life cycles and other industry factors. These costs are periodically reviewed for impairment.

NeuroStar Advanced Therapy System commissions are deferred and amortized on a straight-line basis over a seven-year period equal to the average customer term, which the Company deems to be the expected period of benefit for these costs.

On the Company’s balance sheets, the current portion of capitalized contract costs is represented by the current portion of prepaid commission expense, while the long-term portion is included in prepaid commission expense. Amortization expense was $0.5 million and $0.3 million for the three months ended September 30, 2022 and 2021, respectively, and $1.3 million and $0.9 million for the nine months ended September 30, 2022 and 2021, respectively.