Amount borrowed under credit facility to fund acquisition.

No definition available.

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Debt instrument amortization, end date CCYY-MM-DD format.

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Debt instrument redemption price percentage plus accrued interest.

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Imputed interest rate.

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- Definition

Loan amortization percentage under credit facility.

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Secured credit facility used for share repurchase program.

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No definition available.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Date the credit facility terminates, in CCYY-MM-DD format.

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The effective interest rate at the end of the reporting period.

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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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No definition available.

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Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	1 Months Ended
Debt - Additional Information (Detail) (USD $)	Aug. 31, 2010	Jan. 30, 2015	Mar. 31, 2011	Apr. 30, 2013	Oct. 31, 2014
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 180,000,000
Secured Credit Facility Used For Share Repurchase Program		90,200,000
Imputed interest on advance		4.58%esl_ImputedInterestRate
Discounted value of debt		46,400,000			51,900,000
Senior Notes 7% Maturing in August 2020
Debt Instrument [Line Items]
Debt instrument, carrying amount	250,000,000
Debt instrument, interest rate	7.00%
Debt issuance cost	4,400,000
Net proceeds from issuance of debt	245,600,000
Senior Notes 7% Maturing in August 2020 \| Debt Redemption After August 1, 2015
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest	103.50%
Senior Notes 7% Maturing in August 2020 \| Debt Redemption After August 1, 2018
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest	100.00%
Senior Notes 7% Maturing in August 2020 \| Debt Redemption Prior August 1, 2015
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest	100.00%
Belgium-based \| Barco N V
Debt Instrument [Line Items]
Business acquired		170,000,000
Secured Debt
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			460,000,000
Credit facility expiration date			Jul. 20, 2016
Credit facility amount outstanding		280,000,000
Secured Debt \| Barco N V
Debt Instrument [Line Items]
Credit facility principally used to fund acquisition		65,000,000
Secured Debt \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate		1.50%
Interest rate		1.67%
Credit facility interest rate description		The spread ranges from LIBOR plus 1.5% to LIBOR plus 2.25% depending on the leverage ratios at the time the funds are drawn
Secured Debt \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate			1.50%
Secured Debt \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate			2.25%
U S Term Loan
Debt Instrument [Line Items]
Credit facility amount outstanding		159,700,000
Term Loan				175,000,000
Loan amortization rate		1.25%
Loan amortization end date		Mar. 31, 2016
Loan remaining balance due date		Jul. 20, 2016
U S Term Loan \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate		1.50%
Interest rate		1.67%
Credit facility interest rate description		The interest rate on the U.S. Term Loan ranges from LIBOR plus 1.5% to LIBOR plus 2.25% depending on the leverage ratios at the time the funds are drawn.
U S Term Loan \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate				1.50%
U S Term Loan \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate				2.25%
7 % Senior Notes Due August 1, 2020
Debt Instrument [Line Items]
Loan remaining balance due date		Aug. 01, 2020
Debt instrument, carrying amount		250,000,000
Debt instrument, interest rate		7.00%
Debt instrument, fair value		$ 262,500,000			$ 266,900,000