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Network
2405405 - Disclosure - Balance Sheet Components - Warranty Accrual Activity (Detail)
(http://www.aligntech.com/role/BalanceSheetComponentsWarrantyAccrualActivityDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001097149 (http://www.sec.gov/CIK)
Balance Sheet Related Disclosures [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Balance Sheet Related Disclosures [Abstract]
 
 
Movement in Standard Product Warranty Accrual [Roll Forward]
 
 
Balance at beginning of period
2,638,000  
3,148,000  
Charged to cost of revenues
4,894,000  
1,796,000  
Actual warranty expenditures
(3,691,000) 
(2,306,000) 
Balance at end of period
3,841,000  
 
2,638,000