| Component: (Network and Table) | |
|---|---|
| Network | 100260 - Disclosure - Property and Equipment (Tables) (http://www.blackline.com/20161231/taxonomy/role/DisclosurePropertyAndEquipmentTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001666134 (http://www.sec.gov/CIK) |
| Property Plant And Equipment [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2016-01-01 - 2016-12-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property Plant And Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Property and Equipment | Property and equipment consisted of the following at December 31, 2016 and 2015 (in thousands):
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||