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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2014
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Dec. 31, 2013
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|---|---|---|
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Swingline Credit Facility [Member]
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| Short-term Debt [Line Items] | ||
| Line of credit maximum borrowing capacity | $ 25,000 | |
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Line of Credit [Member]
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| Short-term Debt [Line Items] | ||
| Line of credit maximum borrowing capacity | 175,000 | |
| Outstanding borrowings | 0 | 0 |
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Letter of Credit [Member]
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| Short-term Debt [Line Items] | ||
| Line of credit maximum borrowing capacity | $ 75,000 |
| X | ||||||||||
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- Definition
Amount borrowed under the credit facility as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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