XML 84 R41.htm IDEA: XBRL DOCUMENT v2.4.0.8

Basis of Presentation (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basis of Presentation [Line Items]
Share-based compensation expense	$ 5,666	$ 4,067	$ 3,351
Research and development expenses
Basis of Presentation [Line Items]
Share-based compensation expense	1,705	1,448	1,072
General and administrative expenses
Basis of Presentation [Line Items]
Share-based compensation expense	$ 3,961	$ 2,619	$ 2,279

X

- Details

Name:	lgnd_BasisOfPresentationLineItems
Namespace Prefix:	lgnd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

No definition available.

+ Details

Name:	us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration