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DEBT - Interest Rates (Details)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest rates on debt
Effective Interest Rate (as a percent)	5.83%	5.01%
Minimum
Interest rates on debt
Range of interest rates (excluding unused commitment fees)	3.83%	3.36%
Maximum
Interest rates on debt
Range of interest rates (excluding unused commitment fees)	8.43%	7.27%

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement, excluding unused commitment fees.

+ References

No definition available.

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- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- References

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