Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements of Stockholders' Equity, Share Data
Cash dividends declared (in dollars per share)	$ 0.32	$ 0.29
Common Stock
Consolidated Statements of Stockholders' Equity, Share Data
Allocation of ESOP shares, shares	24,466	24,466
Repurchase of company common stock, shares	199,464	170,994