| Component: (Network and Table) | |
|---|---|
| Network | 40501 - Disclosure - Accrued Expenses (Details) (http://www.marinuspharma.com/role/DisclosureAccruedExpensesDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001267813 (http://www.sec.gov/CIK) |
| Accrued Expenses | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
Accrued Expenses | ||
Payroll and related costs | ||
Clinical trials and drug development | ||
Professional fees | ||
Other | ||
Total accrued expenses | 1,775,000 | 2,161,000 |