EQUITY

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

EQUITY

(a) Dividends

On February 7, 2013, the Company announced that its Board of Directors approved a dividend of $0.035 per share to be paid on March 4, 2013 to common stockholders of record on February 20, 2013. The total dividend payment on March 4, 2013 was $634 of which $517 was in cash and $117 (net of the Dividend Reinvestment Plan ("DRIP") discount of $6) was in common stock of the Company (representing 18,976 shares of common stock) in accordance with the DRIP.

(b) Acorn Stock Options

A summary of stock option activity for the three months ended March 31, 2013 is as follows:

	Number  of Options (in shares)	Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at December 31, 2012	1,311,397	$	5.20
Granted	46,461	$	7.19
Exercised	—	$	—
Forfeited or expired	—	$	—
Outstanding at March 31, 2013	1,357,858	$	5.27	4.1 years	$	3,076
Exercisable at March 31, 2013	1,010,688	$	4.40	4.4 years	$	2,984

The fair value of the options granted was estimated on the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions:

Risk-free interest rate	1.3	%
Expected term of options	6.7 years
Expected annual volatility	57	%
Expected dividend yield	2.0	%

(c) Stock-based Compensation Expense

Stock-based compensation expense included in the Company’s Condensed Statements of Operations for the three month periods ended March 31, 2012 and 2013 was as follows:

	Three months ended March 31,
	2012		2013
Research and development expenses, net of credits	$	—	$	10
Selling, general and administrative expenses	142		271
Total stock-based compensation expense	$	142	$	281

(d) Warrants

The Company previously issued warrants at exercise prices equal to or greater than market value of the Company’s common stock at the date of issuance.  A summary of warrant activity follows:

	Number  of Warrants (in shares)		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life
Outstanding at December 31, 2012	28,750		$	3.68
Granted	—
Exercised	(2,954	)	$	3.68
Forfeited or expired	(2,796	)	$	3.68
Outstanding at March 31, 2013	23,000		$	3.68	2.7 years

During the three months ended March 31, 2013, 2,954 warrants were exercised and 2,796 warrants were forfeited in connection with the “net exercise” of 5,750 warrants. In a net exercise of a warrant, the Company does not require a payment of the exercise price of the warrant from the warrant holder, but reduces the number of shares of common stock issued upon the exercise of the warrant by the smallest number of whole shares that has an aggregate fair market value equal to or in excess of the aggregate exercise price for the warrants covered by the warrants exercised. The 5,750 warrants which were exercised under this method had a weighted average exercise price of $3.68 per share.