Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	0 Months Ended		12 Months Ended
	Apr. 06, 2011	Jan. 28, 2011	Dec. 31, 2012	Dec. 31, 2011
Stock Issuance Cost	$ 243	$ 296	$ 680	$ 539