| Component: (Network and Table) | |
|---|---|
| Network | 2406403 - Disclosure - PROPERTY AND EQUIPMENT (Schedule of Property and Equipment) (Detail) (http://www.athenahealth.com/role/PropertyAndEquipmentScheduleOfPropertyAndEquipmentDetail) |
| Table | Schedule of Property, Plant and Equipment [Table] |
| Reporting Entity [Axis] | 0001131096 (http://www.sec.gov/CIK) |
| Property, Plant and Equipment [Line Items] | Period [Axis] | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2012-12-31 | 2011-12-31 | |||||||||||||
| Property, Plant and Equipment, Type [Axis] | Property, Plant and Equipment, Type [Axis] | |||||||||||||
| Equipment [Member] | Furniture and Fixtures [Member] | Leasehold Improvements [Member] | Air Transportation Equipment [Member] | Building and Building Improvements [Member] | Land and Land Improvements [Member] | Property, Plant and Equipment, Type [Domain] | Equipment [Member] | Furniture and Fixtures [Member] | Leasehold Improvements [Member] | Air Transportation Equipment [Member] | Building and Building Improvements [Member] | Land and Land Improvements [Member] | Property, Plant and Equipment, Type [Domain] | |
Total property and equipment, at cost | 56,078,000 | 5,297,000 | 15,518,000 | 3,156,000 | 18,144,000 | 2,950,000 | 101,143,000 | 43,950,000 | 3,634,000 | 12,297,000 | 3,154,000 | 14,556,000 | 2,921,000 | 80,512,000 |
Accumulated depreciation and amortization | (49,902,000) | (33,929,000) | ||||||||||||
Construction in progress | 2,794,000 | 5,692,000 | ||||||||||||
Property and equipment, net | 54,035,000 | 52,275,000 | ||||||||||||