DEBT (Summary Of The Balances Outstanding And Interest Rate Spread) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Short-term Debt
Line of Credit	$ 115,000	$ 48,000
Term Loan:
Short-term Debt
Deferred Loan Costs	(3,064)	(3,717)
Total debt	697,836	697,183
$250 Million Senior Revolving Line Of Credit (Line of Credit) \| Line of Credit
Short-term Debt
Line of Credit	115,000	48,000
$250 Million Term Loan (First Term Loan) \| Term Loan:
Short-term Debt
Unsecured Term Loan	207,000	207,000
$300 Million Senior Term Loan Agreement (Second Term Loan) \| Term Loan:
Short-term Debt
Unsecured Term Loan	300,000	300,000
$200 Million Senior Term Loan Agreement (Third Term Loan) \| Term Loan:
Short-term Debt
Unsecured Term Loan	$ 193,900	$ 193,900
Minimum \| $250 Million Senior Revolving Line Of Credit (Line of Credit) \| Line of Credit
Short-term Debt
Basis spread on variable rate (percentage)	1.50%
Minimum \| $250 Million Term Loan (First Term Loan) \| Term Loan:
Short-term Debt
Basis spread on variable rate (percentage)	1.45%
Minimum \| $300 Million Senior Term Loan Agreement (Second Term Loan) \| Term Loan:
Short-term Debt
Basis spread on variable rate (percentage)	1.35%
Minimum \| $200 Million Senior Term Loan Agreement (Third Term Loan) \| Term Loan:
Short-term Debt
Basis spread on variable rate (percentage)	1.45%
Maximum \| $250 Million Senior Revolving Line Of Credit (Line of Credit) \| Line of Credit
Short-term Debt
Basis spread on variable rate (percentage)	2.25%
Maximum \| $250 Million Term Loan (First Term Loan) \| Term Loan:
Short-term Debt
Basis spread on variable rate (percentage)	2.20%
Maximum \| $300 Million Senior Term Loan Agreement (Second Term Loan) \| Term Loan:
Short-term Debt
Basis spread on variable rate (percentage)	2.00%
Maximum \| $200 Million Senior Term Loan Agreement (Third Term Loan) \| Term Loan:
Short-term Debt
Basis spread on variable rate (percentage)	2.20%

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

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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- Definition

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.

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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