Unaudited Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement of Stockholders' Equity [Abstract]
Common stock dividends, per share (in dollars per share)	$ 0.27	$ 0.265
Common stock held by ESOP committed to be released, shares (in shares)	27,279	28,737