Consolidated Statements Of Changes In Shareholders' Equity Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement of Stockholders' Equity [Abstract]
Treasury stock, shares, acquired	605,077		175,000
Common stock received from Healthfield escrow, shares		14,334