Real Estate Acquisitions, Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Total revenues	$ 3,764
Net income attributable to Sun Communities, Inc. common stockholders	1,317
Acquisitions - 2019 [Member]
Business Acquisition [Line Items]
Total revenues	289,253	$ 263,706
Net income attributable to Sun Communities, Inc. common stockholders	$ 34,885	$ 31,732
Net income per share attributable to Sun Communities, Inc. common stockholders - basic	$ 0.41	$ 0.40
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted	$ 0.41	$ 0.40