Dividends |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dividends [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dividends [Text Block] | 16. Dividends Interim dividends declared on Class A common stock and redeemable preferred stock for each quarter of the respective years ended December 31 , 2018 and 2017 were as follows:
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