ACQUISITIONS (Narrative) (Details) - Continuum $ in Thousands		3 Months Ended
	Mar. 15, 2018 USD ($)	Sep. 30, 2018 USD ($)
Business Acquisition [Line Items]
Acquisition date	Mar. 15, 2018
Cash consideration	$ 52,515
Cash consideration placed in escrow	$ 5,410
Estimated future operating results, period	12 months
Maximum amount of earnout payable	$ 3,135
Earnout payment	$ 2,400
Reduction to the fair value of the contingent consideration		$ (900)
Minimum
Business Acquisition [Line Items]
Consideration placed in escrow, period	9 months
Maximum
Business Acquisition [Line Items]
Consideration placed in escrow, period	15 months
Design Consultants
Business Acquisition [Line Items]
Numbers of employees acquired	125