Significant Accounting Policies Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Finite-Lived Intangible Assets [Line Items] | |||
Goodwill and intangible asset impairment | $ 3,653 | $ 0 | $ 0 |
Assembled occupancy | Minimum [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Finite-Lived Intangible Asset, Useful Life | 4 months | ||
Assembled occupancy | Maximum [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Finite-Lived Intangible Asset, Useful Life | 8 months | ||
Trade name | |||
Finite-Lived Intangible Assets [Line Items] | |||
Finite-Lived Intangible Asset, Useful Life | 30 years | ||
Customer relationships | |||
Finite-Lived Intangible Assets [Line Items] | |||
Finite-Lived Intangible Asset, Useful Life | 20 years |