Share Based Compensation (Details) (USD $)	3 Months Ended				0 Months Ended	3 Months Ended				24 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Stock Options [Member]	Mar. 31, 2013 Restricted Stock [Member]	Apr. 23, 2013 Subsequent Event [Member]	Mar. 31, 2013 Director [Member]	Mar. 31, 2012 Director [Member]	Mar. 31, 2013 Chief Executive Officer [Member]	Mar. 31, 2012 Chief Executive Officer [Member]	Dec. 31, 2012 Chief Executive Officer [Member]	Mar. 31, 2013 Non-Employee Directors [Member]	Mar. 31, 2012 Non-Employee Directors [Member]
Salary Stock Arrangement with Individual, Share-based Payments [Line Items]
Number of additional shares approved for grant (in shares)	100,000				500,000						300,000
Annual salary increase								$ 20,000	$ 15,000	$ 200,000
Shares issues as retainer fees (in shares)						20,000	80,000
Total compensation expense (recovery) recognized	100,000	(100,000)
Tax benefit relating to compensation expense recognized	0	0									0	0
Non employee directors share-based compensation expenses	100,000	100,000
Total compensation cost not yet recognized	1,100,000
Total compensation cost not yet recognized, period for recognition	2 years 6 months
Outstanding stock option grants and transaction [Roll Forward]
Outstanding, beginning balance (in shares)			275,933
Granted (in shares)			0
Exercised (in shares)			(5,834)
Forfeited (in shares)			(1,166)
Expired (in shares)			(1,940)
Outstanding, ending balance (in shares)			266,993
Vested and expected to vest, period end (in shares)			251,892
Exercisable, period end (in shares)			75,703
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)			$ 4.46
Exercised (in dollars per share)			$ 1.92
Forfeited (in dollars per share)			$ 2.39
Expired (in dollars per share)			$ 11.53
Outstanding, ending balance (in dollars per share)			$ 4.48
Vested and expected to vest, period end (in dollars per share)			$ 4.60
Exercisable, period end (in dollars per share)			$ 9.71
Weighted-Average Remaining Contractual Term [Abstract]
Outstanding, Weighted Average Remaining Contractual Term			8 years 4 months 2 days
Vested and Expected to Vest, Weighted-Average Remaining Contractual Term			8 years 3 months 15 days
Exercisable, Weighted Average Remaining Contractual Term			6 years 9 months 7 days
Aggregate intrinsic value [Abstract]
Outstanding, Intrinsic Value			1,434,000
Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value			1,344,000
Exercisable, Aggregate Intrinsic Value			277,000
Number of Shares [Roll Forward]
Outstanding, beginning balance (in shares)				375,416
Granted (in shares)				0
Vested (in shares)				(14,636)
Forfeited (in shares)				0
Outstanding, ending balance (in shares)				360,780
Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, beginning balance (in dollars per share)				$ 6.21
Vested (in dollars per share)				$ 76.30
Outstanding, ending balance (in dollars per share)				$ 3.37
Information regarding options exercised [Abstract]
Intrinsic value	15,000	0
Cash proceeds received	11,000	0
Tax benefit realized	$ 0	$ 0