| Component: (Network and Table) | |
|---|---|
| Network | 2411402 - Disclosure - Service Inventory, Net (Details) (https://www.cray.com/role/ServiceInventoryNetDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000949158 (https://www.sec.gov/CIK) |
| Inventory Disclosure [Abstract] | Period [Axis] | |
|---|---|---|
2013-12-31 | 2012-12-31 | |
Inventory Disclosure [Abstract] | ||
Service inventory | ||
Accumulated depreciation | ( | ( |
Service inventory, net | 1,828,000 | 1,490,000 |