Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statement of Changes in Stockholders' Equity [Abstract]
Purchase of treasury stock (in shares)	31,092	33,042	24,247
Cash dividends (in dollars per share)	$ 1.22	$ 1.51	$ 1.09