Stock Compensation (Details) (USD $)	6 Months Ended				1 Months Ended
	Jun. 30, 2012 Y	Jun. 30, 2011	Jun. 30, 2012 Range $6.00 - $8.00 [Member]	Jun. 30, 2012 Range $8.00 - $12.00 [Member]	Apr. 30, 2011 Chief Operating Officer [Member]
Stock Compensation [Abstract]
Percentage of fair market value at which employees acquire shares under Employee Stock Purchase Plan (in hundredths)	85.00%
Share-based Compensation Expense	$ 375,000	$ 636,000
Number Of Years Used To Calculate Historical Volatility Of Stock Price For Use In Valuation Model (in years)	7
Deferred Compensation Arrangement with Individual [Line Items]
Weighted average grant date fair value of options (in dollars per share)					$ 0.80
Options granted	0				10,000
Number of options, shares [Roll Forward]
Outstanding at beginning of period (in shares)	247,650
Granted (in shares)	0				10,000
Exercised (in shares)	1,500
Forfeited (in shares)	(4,050)
Expired (in shares)	83,000
Outstanding at end of period (in shares)	159,100
Exercisable at end of period (in shares)	152,433
Weighted Average Exercise Price [Roll Forward]
Outstanding at start of period (in dollars per share)	$ 11.28
Granted (in dollars per share)	$ 0
Exercised (in dollars per share)	$ 10.22
Forfeited (in dollars per share)	$ 10.88
Expired (in dollars per share)	$ 13.95
Outstanding at end of period (in dollars per share)	$ 9.90
Exercisable at end of period (in dollars per share)	$ 9.94
Share-based Compensation, Stock Options Outstanding and Exercisable [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)			$ 6.00	$ 8.00
Range of Exercise Prices, Upper Range Limit (in dollars per share)			$ 8.00	$ 12.00
Stock Options Outstanding (in shares)	159,100		15,000	144,100
Weighted Average Exercise Price (in dollars per share)	$ 9.90		$ 6.95	$ 10.21
Weighted Average Remaining Contractual Life	2 years 2 months 17 days		4 years 2 months 2 days	2 years 4 days
Aggregate intrinsic value, Outstanding	215,000
Range of Exercise Prices, Lower Range Limit, Exercisable (in dollars per share)			$ 6.00	$ 8.00
Range of Exercise Prices, Upper Range Limit, Exercisable (in dollars per share)			$ 8.00	$ 12.00
Stock Options Exercisable (in shares)	152,433		15,000	137,433
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 9.94		$ 6.95	$ 10.27
Weighted Average Remaining Contractual Life, Exercisable (in years)	1 year 11 months 6 days		4 years 2 months 2 days	1 year 8 months 8 days
Aggregate Intrinsic Value, Exercisable	$ 201,000