Consolidated Statement of Equity (Deficit) (Parentheticals) - shares	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2013	Aug. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Issuance of treasury stock, shares		446,501
Purchases of treasury stock, shares	152,746		84,678	44,911