Equity (Other Disclosures) (Details) (USD $)	0 Months Ended		1 Months Ended
	Sep. 18, 2013	Oct. 03, 2012	Aug. 31, 2012	Dec. 31, 2013 plans	Aug. 23, 2012
Equity [Abstract]
Shelf registration, registered amount			$ 50,000,000
Shelf registration, effective period					3 years
Common stock issued to underwriters (in shares)	2,875,000	1,832,410
Proceeds from issuance of common stock	$ 11,700,000	$ 9,500,000
Number of equity incentive compensation plans maintained by the company				3