XML 48 R37.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Related-Party Transactions - Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Detail) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Related Party Transactions [Abstract] |  |  |
Management fees | [1] | $ 387,154 | $ 295,748
Credits from voluntary, irrevocable waiver by Adviser's board of directors |  |  | (320,905)
Net fee to (from) our Adviser |  | 387,154 | (25,157)
Administration fees | [1] | $ 211,860 | $ 130,936
[1] | Refer to Note 4, "Related-Party Transactions," for additional information.

X
- Definition Administration fee. + References No definition available. + Details
Name: | land_AdministrationFee
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related party transaction credit from voluntary irrevocable. + References No definition available. + Details
Name: | land_RelatedPartyTransactionCreditFromVoluntaryIrrevocable
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related party transaction net incentive fees paid and credits received. + References No definition available. + Details
Name: | land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expenses related to the managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_ManagementFeeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration