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SIGNIFICANT ACCOUNTING POLICIES NOTES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Accounting Policies [Abstract]
Excess tax benefits recognized in income tax expense	$ 3,840	$ 0	$ 7,603	$ 0
Prior period cash flow presentation for excess tax benefits				$ 4,100
Cumulative-effect adjustment to retained earnings for the recognition of forfeitures of stock awards					$ 1,400

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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