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

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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SUBSEQUENT EVENTS (Details) $ / shares in Units, $ in Thousands, $ in Millions				6 Months Ended
	Aug. 01, 2019 CAD ($)	Jul. 26, 2019 USD ($)	Jul. 01, 2019 $ / shares	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Subsequent events
Payments of Ordinary Dividends, Common Stock				$ 7,942	$ 7,884
Subsequent events
Subsequent events
Quarterly dividend declared (in dollars per share) \| $ / shares			$ 0.18
Payments of Ordinary Dividends, Common Stock		$ 4,000
W.I.S.E. Environmental Services Inc. \| Subsequent events
Subsequent events
Percentage of shares acquired	100.00%
Acquisition price	$ 23.5