Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow during the period for redemption of redeemable noncontrolling interests.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Value of accretion of temporary equity to its redemption value during the period.

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ACQUISITIONS (Narrative) (Details) $ in Thousands, ₺ in Millions	3 Months Ended					9 Months Ended		12 Months Ended
	Sep. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 TRY (₺)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jan. 03, 2015 USD ($)	Dec. 31, 2017 USD ($)	Apr. 09, 2017
Business Acquisition
Impo carrying value reduction				$ 200	₺ 0.6
Equity method investment, ownership percentage				100.00%						50.00%
Payments for repurchase of redeemable noncontrolling interest				$ 5,000	₺ 17.0
Ownership percentage, Headwater entities	100.00%					100.00%
Goodwill	$ 249,653					$ 249,653			$ 236,810
Acquisition related costs	$ 100		$ 0			$ 300	$ 300
Industrias Motor Pump S.A.
Business Acquisition
Business acquisition, percentage of voting interests acquired	100.00%					100.00%
Industrias Rotor Pump and SPD Acquisitions [Domain]
Business Acquisition
Total purchase price	$ 36,000
Intangible assets	15,200					$ 15,200
Goodwill	15,300					15,300
Expected tax deductibility of goodwill resulting from acquisition	$ 4,100					$ 4,100
Valley Farms Supply, Inc
Business Acquisition
Business acquisition, percentage of voting interests acquired		100.00%
Total purchase price		$ 9,200
Impo
Business Acquisition
Business acquisition, percentage of voting interests acquired				10.00%
Headwater Companies
Business Acquisition
Total purchase price				$ 57,400				$ 3,000
Fair value of original equity interest			$ 20,600	20,600
Intangible assets				5,700
Weighted average useful life of acquired finite-lived intangible assets						15 years
Goodwill				33,900
Expected tax deductibility of goodwill resulting from acquisition				$ 7,800
Minimum \| Industrias Rotor Pump and SPD Acquisitions [Domain]
Business Acquisition
Weighted average useful life of acquired finite-lived intangible assets	15 years
Maximum \| Industrias Rotor Pump and SPD Acquisitions [Domain]
Business Acquisition
Weighted average useful life of acquired finite-lived intangible assets	20 years