Stock Options (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of weighted average fair value valuation assumptions for options granted

	Twelve Months Ended December 31,
	2012			2011		2010
Risk-free interest rate		1.17	%	2.78	%	1.20	%
Expected dividend yield	0.00		%	0.00	%	0.00	%
Expected volatility		0.68		0.68		0.79
Expected term (in years)		7.00		5.00		3.00

Schedule of information regarding stock option activity

				Options
					Weighted Avg			Range of
		Total Reserved		Outstanding	Exercise Price			Exercise Prices
Balances at
December 31, 2009			224,782	174,220		$	11.20	$	4.60	-	$	30.55
	Granted			23,404		$	7.52	$	7.50	-	$	7.63
	Exercised		(14,529)	(14,539)		$	3.17	$	2.7		$	7.5
	Forfeited
	or expired		(1,600)	(7,600)		$	10.31	$	2.90	-	$	11.25
Balances at
December 31, 2010			208,643	175,485		$	11.39	$	1.75	-	$	30.55
	Granted			23,500		$	13.46	$	12.96	-	$	16.33
	Exercised		(31,002)	(31,002)		$	6.65	$	1.75	-	$	13.80
Balances at
December 31, 2011			177,641	167,983		$	12.53	$	1.75	-	$	30.55
	Additional options
	authorized		250,000
	Granted			21,000		$	11.03	$	16.77	-	$	1,822.00
	Exercised		(15,095)	(15,095)		$	8.83	$	2.90	-	$	11.05
Balances at
December 31, 2012			412,546	173,888		$	13.39	$	2.70	-	$	30.55

Schedule of exercise prices on options outstanding

				Options Outstanding
2012				2011		2010	Range of Exercise Prices
		17,158			22,861	46,245	$   1.75 - $   9.99
	111,410				120,802	108,180	$ 10.00 - $ 14.99
		24,620			3,620	120	$ 15.00 - $ 19.99
		12,800			12,800	12,800	$ 20.00 - $ 24.99
			2,500		2,500	2,740	$ 25.00 - $ 29.99
			5,400		5,400	5,400	$ 30.00 - $ 30.55
	173,888				167,983	175,485