RESTRUCTURING AND INTEGRATION CHARGES AND IMPAIRMENT LOSSES (NARRATIVE) (Details) - USD ($)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Reduction in force	$ 179,000		$ (200,000)	$ 570,000	$ 1,654,000
Facility exit charges	2,537,000		621,000	4,029,000	747,000
Customer Management Services [Member]
Reduction in force	97,000		(213,000)	437,000	1,548,000
Facility exit charges	2,462,000		600,000	3,313,000	$ 642,000
Customer Management Services [Member] | Leasehold Improvements
Restructuring impairment losses	$ 0			$ 1,100,000
Connextions
Reduction in force						$ 400,000
Termination fee						600,000
Integration charges		$ 3,900,000	$ 5,600,000
Facility exit charges						$ 1,400,000
Connextions | Leasehold Improvements
Integration charges		$ 3,500,000