CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Issuance of stock
Shares in connection with exercise of options (in shares)	7,850	20,360	34,380
Shares of restricted stock (in shares)	76,458	79,823	91,524