ACQUISITIONS AND DIVESTITURES - Affirm and Canadian Operations Divestitures (Details) $ in Thousands	3 Months Ended		6 Months Ended		7 Months Ended	9 Months Ended			12 Months Ended
	Sep. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($) item	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	$ 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												(189)
Adjusted Net Proceeds											$ 2,242	$ 4,786
Gain or loss			$ 101	$ 4,900
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		4
Number of transactions assigned for working capital						2