Concentrations (Details) - leased_property |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Concentration Risk [Line Items] | |||
Number of significant leased properties | 2 | ||
Revenue from Contract with Customer | Customer Concentration Risk | |||
Concentration Risk [Line Items] | |||
Percentage of revenues | 6.00% | 11.00% | 12.00% |
X | ||||||||||
- Definition Number of Significant Leases No definition available.
|
X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|