Lessee Leasing Arrangements, Operating Leases, Landlord Improvement Allowance

No definition available.

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- Definition

Lessee Leasing Arrangements, Operating Leases, Number of Renewal Options

+ References

No definition available.

+ Details

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- Definition

Lessee Leasing Arrangements, Operating Leases, Term of Contract

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Number of Letters of Credit

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating Leases, Facility, Area

+ References

No definition available.

+ Details

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Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating Leases, Future Minimum Payments Due, Base Rent Increase, Next Twelve Months

+ References

No definition available.

+ Details

Name:	elgx_OperatingLeasesFutureMinimumPaymentsDueBaseRentIncreaseNextTwelveMonths
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- Definition

Operating Leases, Future Minimum Payments Due, Base Rent Increase, Year Five

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Operating Leases, Future Minimum Payments Due, Base Rent Increase, Year Four

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Operating Leases, Future Minimum Payments Due, Base Rent Increase, Year Six

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Operating Leases, Future Minimum Payments Due, Base Rent Increase, Year Three

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Operating Leases, Future Minimum Payments Due, Base Rent Increase, Year Two

+ References

No definition available.

+ Details

Name:	elgx_OperatingLeasesFutureMinimumPaymentsDueBaseRentIncreaseYearTwo
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating Leases, Number of Facilities

+ References

No definition available.

+ Details

Name:	elgx_OperatingLeasesNumberofFacilities
Namespace Prefix:	elgx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating Leases, Number of Lease Exited

+ References

No definition available.

+ Details

Name:	elgx_OperatingLeasesNumberofLeaseExited
Namespace Prefix:	elgx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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

- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract
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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 25

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=7661868&loc=d3e34039-112682

+ Details

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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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Commitments and Contingencies (Details) (USD $)	0 Months Ended	1 Months Ended		12 Months Ended
Commitments and Contingencies (Details) (USD $)	Jun. 12, 2013 option facility	Dec. 31, 2014 lease	Jun. 30, 2013 letters_of_credit	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015		$ 2,620,000		$ 2,620,000
2016		2,353,000		2,353,000
2017		2,320,000		2,320,000
2018		2,255,000		2,255,000
2019		2,296,000		2,296,000
2020 and thereafter		25,273,000		25,273,000
Total		37,117,000		37,117,000
Rent Expense				2,700,000us-gaap_LeaseAndRentalExpense	600,000us-gaap_LeaseAndRentalExpense	600,000us-gaap_LeaseAndRentalExpense
Number of Facilities	2elgx_OperatingLeasesNumberofFacilities
Number of Leases Exited		1elgx_OperatingLeasesNumberofLeaseExited
Term of Contract	15 years
Number of Renewal Options	1
Renewal Term	5 years
Minimum Rentals	1,900,000
Landlord Improvement Allowance	6,800,000
Number of Letters of Credit			2
Letters of Credit Outstanding, Amount	$ 5,400,000
Operating Leases, Future Minimum Payments Due, Base Rent Increases [Abstract]
2015		3.00%		3.00%
2016		3.00%		3.00%
2017		3.00%		3.00%
2018		3.00%		3.00%
2019		3.00%		3.00%
2020 and beyond		4.00%		4.00%
Office, Research and Development and Manufacturing Facilities
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Facility, Area	129,000
Manufacturing Facility
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Facility, Area	57,000
Administrative Office
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Facility, Area	3,000