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Other Revenues and Expenses	12 Months Ended
Other Revenues and Expenses	Dec. 31, 2018
Other Revenues and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	Other Revenues and Expenses Other expenses, during the years ended December 31, 2018, 2017, and 2016, are primarily the general administrative expenses of the various operating company subsidiaries or the Consolidated Funds.