10. Share-Based Employee Compensation (Details 2) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Exercise Price, minimum
Exercise Price, maximum
Number of Options Outstanding	460,944	680,912
Weighted Average Exercise Price, outstanding	$ 3.47
Weighted Average Remaining Contractual Life (in Years)	4 years 1 month
Stock Options Exercisable	435,944
Weighted Average Exercise Price, exercisable	$ 3.55
Option 1
Exercise Price, minimum	$ 0.77
Exercise Price, maximum	$ 2.80
Number of Options Outstanding	258,500
Weighted Average Exercise Price, outstanding	$ 1.97
Weighted Average Remaining Contractual Life (in Years)	3 years 2 months 9 days
Stock Options Exercisable	233,500
Weighted Average Exercise Price, exercisable	$ 1.96
Option 2
Exercise Price, minimum	$ 4.0
Exercise Price, maximum	$ 6.33
Number of Options Outstanding	169,508
Weighted Average Exercise Price, outstanding	$ 4.22
Weighted Average Remaining Contractual Life (in Years)	5 years 7 months 25 days
Stock Options Exercisable	169,508
Weighted Average Exercise Price, exercisable	$ 4.22
Option 3
Exercise Price, minimum	$ 7
Exercise Price, maximum	$ 11.40
Number of Options Outstanding	32,936
Weighted Average Exercise Price, outstanding	$ 11.40
Weighted Average Remaining Contractual Life (in Years)	3 years 2 months
Stock Options Exercisable	32,936
Weighted Average Exercise Price, exercisable	$ 11.40