Defined Contribution Plan (Details) (USD $)	3 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Defined Contribution Plan [Abstract]
Eligible compensation that may be deferred	50.00%
Matching opportunity of eligible contribution provided by company	100.00%
Maximum contribution under employee compensation	$ 3,500
Vesting period	3 years
Defined contribution plan expense	$ 299,000	$ 213,000

Maximum amount employer matches of the employee's contribution matched.

No definition available.

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

- Definition

Defined Contribution Plan Employers Contribution of Vesting Period

+ References

No definition available.

+ Details

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Namespace Prefix:	lf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

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

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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