| Component: (Network and Table) | |
|---|---|
| Network | 41001 - Disclosure - Inventories (Details) (http://www.amphastar.com/role/DisclosureInventoriesDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001297184 (http://www.sec.gov/CIK) |
| Inventories | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
Inventories | ||
Raw materials and supplies | ||
Work in process | ||
Finished goods | ||
Total inventory, net | 79,754,000 | 70,665,000 |