COMMITMENTS AND CONTINGENCIES (Details Textual 1) - USD ($) $ in Millions	1 Months Ended					3 Months Ended		6 Months Ended		10 Months Ended	12 Months Ended
	Mar. 30, 2018	Jan. 31, 2018	Mar. 31, 2017	Oct. 31, 2016	Oct. 13, 2015	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Oct. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	May 31, 2018	Dec. 31, 2017
Operating Leases, Rent Expense, Net						$ 1.4	$ 1.2	$ 2.7	$ 2.4
Loss Contingency, Damages Paid, Value	$ 21.5	$ 124.4
Litigation Settlement Interest		20.2
Proceeds from Insurance Settlement, Operating Activities			$ 24.0
Guarantor Obligations, Current Carrying Value						25.1		25.1						$ 19.6
Loss Contingency, Receivable		50.3
Loss Contingency, Loss in Period		12.8
Deposit Assets													$ 28.5
Post-Judgment Interest [Member]
Loss Contingency, Receivable		0.5				0.2		0.2
Recovery of Direct Costs								21.3
Interest Income, Other								0.2
State Computer Access Statutes and Related Taxable Costs and Interest [Member]
Loss Contingency, Receivable		21.3				$ 21.3		21.3
Oracle Litigation [Member]
Loss Contingency, Damages Awarded, Value				$ 124.4	$ 124.4			$ 124.4
Litigation Settlement, Expense											$ 21.4	$ 100.0
Litigation Settlement Interest										$ 3.0
Loss Contingency, Receivable		$ 28.5