Federal and State Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Summary Cash Dividends Per Common Share for Individual Shareholder

The 2016 and 2015 dividends per Common Share from Winthrop for an individual shareholder’s income tax purposes were as follows:

							Cash		Non-Cash		Total
	Ordinary		Capital		Nontaxable		Liquidating		Liquidating		Dividends
	Dividends		Gains		Distribution		Distribution		Distribution		Paid
2016	$	—	$	—	$	—	$	3.25	$	9.21	$	12.46
2015		—		—		—		4.50		—		4.50