Share-Based Compensation Plans (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012
Schedule of share based compensation arrangement by share based payment award options outstanding and exercisable
Number of shares Outstanding	112,500
Range One [Member]
Schedule of share based compensation arrangement by share based payment award options outstanding and exercisable
Exercise Price Range, Lower Range Limit	$ 7.65
Exercise Price Range, Upper Range Limit	$ 7.80
Number of shares Outstanding	44,000
Weighted Average Remaining Contract Life (in years)	3 years 3 months
Weighted Average Exercise Price	$ 7.75
Range Two [Member]
Schedule of share based compensation arrangement by share based payment award options outstanding and exercisable
Exercise Price Range, Lower Range Limit	$ 8.35
Exercise Price Range, Upper Range Limit	$ 8.75
Number of shares Outstanding	68,500
Weighted Average Remaining Contract Life (in years)	2 years 7 months 13 days
Weighted Average Exercise Price	$ 8.51
Range Three [Member]
Schedule of share based compensation arrangement by share based payment award options outstanding and exercisable
Exercise Price Range, Lower Range Limit	$ 7.65
Exercise Price Range, Upper Range Limit	$ 8.75
Weighted Average Remaining Contract Life (in years)	2 years 10 months 13 days
Weighted Average Exercise Price	$ 8.21