Correction to Previously Issued Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2017
Accounting Changes and Error Corrections [Abstract]
Reduction of revenue on wholesale fees	$ 1.5	$ 5.7
Reduction of accounts receivable on wholesale fees	6.1	6.1	$ 7.0
Increase (decrease) to accrued expenses, wholesale fees	(6.1)	(6.1)	7.0
Increase (decrease) to accrued expenses	2.3	2.3	1.6
Increase (decrease) to accounts receivable	$ 2.3	$ 2.3	$ 1.6