Note 9 - Related Party Transactions (Details Textual) - National Geographic Society [Member] - Collaborate Agreement [Member] - $ / shares	29 Months Ended
Mar. 31, 2019	Jul. 08, 2015
Call Options, Exercise Price		$ 10
Call Options, Percentage of Issued and Outstanding Shares		5.00%
Number of Shares Acquired by a Related Party	891,113

The percentage of issued and outstanding shares issuable by the called of options.

No definition available.

Name:	lind_CallOptionsPercentageOfIssuedAndOutstandingShares
Namespace Prefix:	lind_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant