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SUMMARY OF NONVESTED PHANTOM STOCK UNITS (Details)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Share-based Payment Arrangement [Abstract]
Nonvested Units, Beginning balance | shares	13,252
Nonvested Weighted Average Grant Date Fair Value, Beginning balance | $ / shares	$ 72.61
Nonvested Units, Granted | shares	2,412
Nonvested Weighted Average Grant Date Fair Value, Granted | $ / shares	$ 146.06
Nonvested Units, Vested | shares	(5,792)
Nonvested Weighted Average Grant Date Fair Value, Vested | $ / shares	$ 63.37
Nonvested Units, Forfeited | shares
Nonvested Weighted Average Grant Date Fair Value, Forfeited | $ / shares
Nonvested Units, Canceled | shares
Nonvested Weighted Average Grant Date Fair Value, Canceled | $ / shares
Nonvested Units, Ending Balance | shares	9,872
Nonvested Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 95.98
Phantom Stock Unit Awards Expected to Vest, Units | shares	9,872
Phantom Stock Unit Awards Expected to Vest, Weighted Average Grant Date Fair Value | $ / shares	$ 95.98

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Nonvested Units, Canceled.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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