Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Summary of Significant Accounting Policies [Abstract]

Held-to-Maturity Investments

		June 30, 2013 (unaudited)
		Amortized Cost		Gross Unrecognized Gains		Gross Unrecognized Losses		Aggregate Fair Value
Current investments:
Corporate debt securities	$	503	$	—	$	—	$	503
Certificates of deposit		8,250		—		—		8,250
Total current investments	$	8,753	$	—	$	—	$	8,753
		December 31, 2012
		Amortized Cost		Gross Unrecognized Gains		Gross Unrecognized Losses		Aggregate Fair Value
Current investments:
Corporate debt securities	$	1,520	$	—	$	—	$	1,520
Certificates of deposit		7,000		—		—		7,000
Total current investments	$	8,520	$	—	$	—	$	8,520
Long-term investments:
Corporate debt securities	$	500	$	—	$	—	$	500

Schedule of Earnings Per Share, Basic and Diluted

		Three Months Ended					Six Months Ended
		June 30, 2012					June 30, 2012
		(unaudited)					(unaudited)
		Income	Shares		Per Share Amount		Income	Shares		Per Share Amount
Basic EPS
Net Income	$	577				$	125
Income allocated to participating securities		140					30
Income allocated to common shares	$	437	23,469,777	$	0.02	$	95	23,488,475	$	0.00
Diluted EPS
Diluted potential common shares (1)			1,697,828					1,856,304
Income allocated to common shares	$	437	25,167,605	$	0.02	$	95	25,344,779	$	0.00

(1) Dilutive potential common shares consist of shares of common stock issuable upon exercise of outstanding stock options and warrants. 

Potentially Dilutive Common Stock Equivalents

	Three months ended June 30,		Six months ended June 30,
	2013	2012	2013	2012
Options and warrants	5,605,713	3,005,164	5,605,713	2,704,361
Convertible preferred stock	7,545,333		7,545,333
Total potentially dilutive common stock equivalents	13,151,046	3,005,164	13,151,046	2,704,361