| Component: (Network and Table) | |
|---|---|
| Network | 41401 - Disclosure - Income Taxes (Summary of Income (Loss) Before Income Taxes) (Details) (http://www.amphastar.com/role/DisclosureIncomeTaxesSummaryOfIncomeLossBeforeIncomeTaxesDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001297184 (http://www.sec.gov/CIK) |
| Income Taxes | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | 2014-01-01 - 2014-12-31 | |
Income Taxes | |||
Income (loss) before income taxes: | |||
United States | ( | ( | |
Foreign | ( | ( | ( |
Income (loss) before income taxes | 14,946,000 | (10,364,000) | (18,148,000) |