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ACQUISITIONS AND DIVESTITURES - Affirm and Canadian Operations Divestitures (Details) $ in Thousands		3 Months Ended			4 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 28, 2019 USD ($)	Apr. 01, 2019 USD ($)	Mar. 19, 2019 USD ($)	Feb. 26, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reduction in goodwill						$ 2,604
Impairment of Goodwill				$ 0		4,396	$ 17,894
Sale | Affirm Crane Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Initial Net Proceeds								$ 6,968			$ 10,982
Working Capital True Up											$ 92
Adjusted Net Proceeds								$ 6,968
Gain or loss	$ (1,646)			0	$ (92)
Net book value	$ 18,600	$ 18,600	$ 18,600		$ 18,600	$ 18,600
Reduction in goodwill				2,600
Impairment of Goodwill				$ 4,400
Sale | Canadian Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Initial Net Proceeds									$ 2,242	$ 4,975
Working Capital True Up										(325)
Adjusted Net Proceeds										$ 4,650
Gain or loss		$ 5,040	$ 101
Sale | Affirm and Canadian Operations Divestitures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of sales transactions						4
Number of transactions assigned for working capital						2

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