Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Accumulated depreciation on property, plant and equipment (in dollars)	$ 27,810,527	$ 27,394,851
Accumulated depreciation on leased property under capital lease (in dollars)	$ 258,243	$ 129,122
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares, authorized (in shares)	245,000,000	245,000,000
Common stock issued, shares (in shares)	63,806,797	38,404,764
Treasury shares (in shares)	165,906	165,906