Minimum percentage of accounts receivable require to be disclosed as major customer.

No definition available.

Name:	lrad_MinimumPercentageOfAccountsReceivableRequireToBeDisclosedAsMajorCustomer
Namespace Prefix:	lrad_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum percentage of revenue require to be disclosed as major customer.

+ References

No definition available.

+ Details

Name:	lrad_MinimumPercentageOfRevenueRequireToBeDisclosedAsMajorCustomer
Namespace Prefix:	lrad_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	lrad_Note12MajorCustomersDetailsLineItems
Namespace Prefix:	lrad_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of customers attaining specified percentage of Accounts receivable.

+ References

No definition available.

+ Details

Name:	lrad_NumberOfCustomersAttainingSpecifiedPercentageOfAccountsReceivable
Namespace Prefix:	lrad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of customers attaining specified percentage of revenue.

+ References

No definition available.

+ Details

Name:	lrad_NumberOfCustomersAttainingSpecifiedPercentageOfRevenue
Namespace Prefix:	lrad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Note 12 - Major Customers (Details) (Customer Concentration Risk [Member])	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Customer 1 [Member] \| Sales [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage	50.00%	20.00%		19.00%
Customer 1 [Member] \| Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage			53.00%	18.00%
Customer 2 [Member] \| Sales [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage				11.00%
Customer 2 [Member] \| Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage			16.00%	17.00%
Customer 3 [Member] \| Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage				12.00%
Customer 4 [Member] \| Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage				11.00%
Customer 5 [Member] \| Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage				11.00%
Customer 6 [Member] \| Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage				11.00%
Customer 1 [Member] \| Sales [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage			23.00%
Sales [Member]
Note 12 - Major Customers (Details) [Line Items]
Number of customers, recorded more than 10% of revenue	1	1	1	2
Minimum percentage of revenue required to be disclosed as major customer			10.00%	10.00%
Accounts Receivable [Member]
Note 12 - Major Customers (Details) [Line Items]
Number of customers, recorded more than 10% of accounts receivable			2	6
Minimum percentage of accounts receivable required to be disclosed as major customer			10.00%	10.00%