Impairments and Other (Gains) Charges	12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Impairments and Other (Gains) Charges	Impairments and Other Charges (Gains), netOn March 5, 2019, we announced the outcome of the arbitration regarding SDC (Refer to Note 10 “Legal Proceedings” of the Notes to Consolidated Financial Statements for SDC legal proceedings discussion) which required Align to close its Invisalign stores and tender Align’s equity interest in SDC by April 3, 2019. Accordingly, Align evaluated the ongoing value of the Invisalign stores’ operating lease right-of-use assets and related leasehold improvements and other fixed assets in accordance with ASC 360, Property, Plant and Equipment. Based on the evaluation, Align determined that the carrying value of these assets were not recoverable. Align evaluated the fair value of these assets in accordance with ASC 820, Fair Value Measurement, and we considered the market participant’s ability to generate economic benefits by using these assets in its highest and best use or by selling it to another market participant that would use the asset in its highest and best use. As a result, in the first quarter of 2019, we recorded impairment losses of $14.2 million for operating lease right-of-use assets and $14.3 million of leasehold improvements and other fixed assets. In addition, we also recorded $1.3 million of employee severance costs and other charges. During the third quarter of 2019, we negotiated early termination of our Invisalign store leases and recorded lease termination gains of $6.8 million.

Impairments and Other (Gains) Charges

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Impairments and Other Charges (Gains), netOn March 5, 2019, we announced the outcome of the arbitration regarding SDC (Refer to Note 10 “Legal Proceedings” of the Notes to Consolidated Financial Statements for SDC legal proceedings discussion) which required Align to close its Invisalign stores and tender Align’s equity interest in SDC by April 3, 2019. Accordingly, Align evaluated the ongoing value of the Invisalign stores’ operating lease right-of-use assets and related leasehold improvements and other fixed assets in accordance with ASC 360, Property, Plant and Equipment. Based on the evaluation, Align determined that the carrying value of these assets were not recoverable. Align evaluated the fair value of these assets in accordance with ASC 820, Fair Value Measurement, and we considered the market participant’s ability to generate economic benefits by using these assets in its highest and best use or by selling it to another market participant that would use the asset in its highest and best use. As a result, in the first quarter of 2019, we recorded impairment losses of $14.2 million for operating lease right-of-use assets and $14.3 million of leasehold improvements and other fixed assets. In addition, we also recorded $1.3 million of employee severance costs and other charges. During the third quarter of 2019, we negotiated early termination of our Invisalign store leases and recorded lease termination gains of $6.8 million.