Stock-Based Employee Compensation (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2012
Options Outstanding
Number of Options Outstanding (in shares)	154,209
Weighted Average Remaining Contractual Life	1 year 8 months 12 days
Weighted Average Exercise Price (in dollars per share)	$ 5.10
Options Exercisable
Number of Options Exercisable (in shares)	154,209
Weighted Average Exercise Price (in dollars per share)	$ 5.10
$2.25 - $4.62
Stock-based compensation expense
Range of Exercise Prices, minimum (in dollars per share)	$ 2.25
Range of Exercise Prices, maximum (in dollars per share)	$ 4.62
Options Outstanding
Number of Options Outstanding (in shares)	10,021
Weighted Average Remaining Contractual Life	1 year 6 months
Weighted Average Exercise Price (in dollars per share)	$ 4.40
Options Exercisable
Number of Options Exercisable (in shares)	10,021
Weighted Average Exercise Price (in dollars per share)	$ 4.40
$4.63 - $4.72
Stock-based compensation expense
Range of Exercise Prices, minimum (in dollars per share)	$ 4.63
Range of Exercise Prices, maximum (in dollars per share)	$ 4.72
Options Outstanding
Number of Options Outstanding (in shares)	64,978
Weighted Average Remaining Contractual Life	1 year 7 months 6 days
Weighted Average Exercise Price (in dollars per share)	$ 4.70
Options Exercisable
Number of Options Exercisable (in shares)	64,978
Weighted Average Exercise Price (in dollars per share)	$ 4.70
$4.73 - $5.18
Stock-based compensation expense
Range of Exercise Prices, minimum (in dollars per share)	$ 4.73
Range of Exercise Prices, maximum (in dollars per share)	$ 5.18
Options Outstanding
Number of Options Outstanding (in shares)	15,611
Weighted Average Remaining Contractual Life	1 year 7 months 6 days
Weighted Average Exercise Price (in dollars per share)	$ 4.90
Options Exercisable
Number of Options Exercisable (in shares)	15,611
Weighted Average Exercise Price (in dollars per share)	$ 4.90
$5.19 - $5.59
Stock-based compensation expense
Range of Exercise Prices, minimum (in dollars per share)	$ 5.19
Range of Exercise Prices, maximum (in dollars per share)	$ 5.59
Options Outstanding
Number of Options Outstanding (in shares)	28,135
Weighted Average Remaining Contractual Life	1 year 9 months 18 days
Weighted Average Exercise Price (in dollars per share)	$ 5.20
Options Exercisable
Number of Options Exercisable (in shares)	28,135
Weighted Average Exercise Price (in dollars per share)	$ 5.20
$5.60 - $6.94
Stock-based compensation expense
Range of Exercise Prices, minimum (in dollars per share)	$ 5.60
Range of Exercise Prices, maximum (in dollars per share)	$ 6.94
Options Outstanding
Number of Options Outstanding (in shares)	35,464
Weighted Average Remaining Contractual Life	1 year 9 months 18 days
Weighted Average Exercise Price (in dollars per share)	$ 6.00
Options Exercisable
Number of Options Exercisable (in shares)	35,464
Weighted Average Exercise Price (in dollars per share)	$ 6.00