Condensed Consolidated Statements of Operations (unaudited) (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Sales and marketing, stock based compensation	$ 672	$ 145	$ 1,467	$ 471
Technology and product development, stock-based compensation	132	52	249	140
General and administrative, stock-based compensation	470	140	993	476
Depreciation and amortization of property and equipment, technology and product development	664	605	1,909	1,749
Depreciation and amortization of property and equipment, general and administrative	$ 90	$ 50	$ 257	$ 163

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets related to (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

No definition available.

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Namespace Prefix:	ledr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration