| Component: (Network and Table) | |
|---|---|
| Network | 100630 - Disclosure - Stock-Based Compensation - Weighted-Average Fair Value Assumption of Stock Option Awards (Detail) (http://www.arcadiabio.com/20161231/taxonomy/role/DisclosureStockBasedCompensationWeightedAverageFairValueAssumptionOfStockOptionAwardsDetail) |
| Table | Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] |
| Reporting Entity [Axis] | 0001469443 (http://www.sec.gov/CIK) |
| Award Type | Employee Stock Option [Member] |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | ||
| Range | Range | ||
| Maximum [Member] | Minimum [Member] | Range | |
Expected term (years) | |||
Expected volatility | |||
Risk-free interest rate | |||
Expected dividend yield | |||