CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted common stock awards issued from treasury stock (in shares)		205,500
Forfeiture of 7,000 restricted common stock awards to treasury stock (in shares)	7,000