INTEREST EXPENSE (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INTEREST EXPENSE [Abstract]
Credit facility costs	$ 0us-gaap_PaymentsOfFinancingCosts	$ 0us-gaap_PaymentsOfFinancingCosts	$ 6,139,000us-gaap_PaymentsOfFinancingCosts
Amortization of deferred financing costs	1,228,000us-gaap_AmortizationOfFinancingCosts	1,228,000us-gaap_AmortizationOfFinancingCosts	1,365,000us-gaap_AmortizationOfFinancingCosts
Deferred financing costs	$ 3,300,000us-gaap_DeferredFinanceCostsNet	$ 4,600,000us-gaap_DeferredFinanceCostsNet

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant