11. SUBSEQUENT EVENTS

3 Months Ended

Mar. 31, 2014

Subsequent Events [Abstract]

11.SUBSEQUENT EVENTS

Warrant Exercises – From April 1, 2014 through May 8, 2014, certain holders exercised warrants on a cash or cashless basis for an aggregate of 145,000 and 493,000 shares of the Company’s common stock, respectively, for aggregate cash payments of $883,000.

A summary as of May 8, 2014 of outstanding warrants, which the Company recorded at fair value, with a weighted-average exercise price of $7.57, is as follows:

Issuance Date	Expiration Date	Exercise Price	Warrants Outstanding
06/21/2013	06/21/2015	$7.59		1,051,000
03/28/2013	03/28/2015	$7.59		296,000
01/11/2013	01/11/2018	$6.32		813,000
09/26/2012	09/26/2015	$8.85		1,639,000
07/3/2012	07/03/2017	$6.09		830,000
12/13/2011	12/13/2016	$8.43		281,000
				4,910,000

Equity Offering – In April 2014, the Company issued 1,750,000 shares of its common stock in a public offering for net proceeds of $26,000,000.

Payments on Senior Unsecured Notes – In April 2014, the Company fully retired its senior unsecured notes by paying in cash the outstanding principal amount and all accrued and unpaid interest.

Payments on Plant Owners’ Revolving Credit Facility – From April 1, 2014 through April 25, 2014, the Company made $16,000,000 in principal payments on its revolving lines of credit. As of May 9, 2014, the outstanding principal balance on these revolving lines of credit was $0, with $35,000,000 of availability.

Debt Modifications – On April 1, 2014, the Company entered into amendments to its credit facilities and term loan arrangements as discussed in detail in Note 5.