CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement of Stockholders' Equity [Abstract]
Dividends declared (in dollars per share)	$ 0.04	$ 0.04	$ 0.04
Common shares issued	0	0	462,234
Restricted shares granted	62,105	40,000	85,852
Net of forfeitures	0	2,500	0