RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Revenue from related parties	$ 1.3	$ 4.0	$ 2.7	$ 7.0
Accounts receivable from related parties	0.6		0.6		$ 0.6
InteliStaf [Member]
Related Party Transaction [Line Items]
Revenue from related parties	$ 2.9	$ 2.2	$ 6.0	$ 4.3
Joint venture, percent ownership	68.00%		68.00%
Receivable balance with joint venture	$ 1.5		$ 1.5		1.4
Payable balance with joint venture	0.1		0.1		$ 0.2
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Rent expense	$ 0.1		$ 0.2