Equity (Other Disclosures) (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	1 Months Ended
	Oct. 03, 2012	Aug. 31, 2012	Mar. 31, 2013 plans	Sep. 28, 2012	Aug. 23, 2012
Equity [Abstract]
Shelf registration, registered amount		$ 50
Shelf registration, effective period					3 years
Underwriting agreement, shares, to be purchased (in shares)				1,593,400
Underwriting agreement, price per share, to be purchased (in dollars per share)				$ 5.19
Underwriting agreement, effective period, option to purchase additional shares (in days)				30 days
Underwriting agreement, shares, 30 day optional purchase (in shares)				239,010
Common stock issued to underwriters (in shares)	1,832,410
Proceeds from issuance of common stock	$ 9.5
Number of equity incentive compensation plans maintained by the company			3