|
Real Estate and Intangible Assets - Pro-Forma Condensed Consolidated Statements of Operations (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified |
0 Months Ended | 3 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
|
Nov. 12, 2014
|
Dec. 31, 2014
|
Mar. 31, 2014
|
Dec. 31, 2014
|
|
| Business Acquisition [Line Items] | ||||
| Impairment loss | $ 14,000us-gaap_AssetImpairmentCharges | $ 14,238us-gaap_AssetImpairmentCharges | ||
| Gain on debt extinguishment | 5,300us-gaap_GainsLossesOnExtinguishmentOfDebt | 5,300us-gaap_GainsLossesOnExtinguishmentOfDebt | 5,274us-gaap_GainsLossesOnExtinguishmentOfDebt | |
| Roseville [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Impairment loss |
14,200us-gaap_AssetImpairmentCharges / us-gaap_BusinessAcquisitionAxis = good_RosevilleMember |
|||
| Gain on debt extinguishment |
$ 5,300us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_BusinessAcquisitionAxis = good_RosevilleMember |
|||
| X | ||||||||||
|
- Definition
Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|