Accounting for Stock-Based Compensation (Details 1) (USD $)	6 Months Ended
	Jun. 30, 2012
Summary of stock options outstanding and exercisable
Number Outstanding	3,011,480
Weighted Average Remaining Contractual Life	2 years 3 months 18 days
Weighted Average Exercise Price	$ 1.51
Range One [Member]
Summary of stock options outstanding and exercisable
Minimum Range of Exercise Price	$ 1.15
Maximum Range of Exercise Price	$ 1.36
Number Outstanding	2,288,000
Weighted Average Remaining Contractual Life	1 year 10 months 24 days
Weighted Average Exercise Price	$ 1.15
Range Two [Member]
Summary of stock options outstanding and exercisable
Minimum Range of Exercise Price	$ 2.00
Maximum Range of Exercise Price	$ 3.00
Number Outstanding	539,980
Weighted Average Remaining Contractual Life	3 years 2 months 12 days
Weighted Average Exercise Price	$ 2.33
Range Three [Member]
Summary of stock options outstanding and exercisable
Minimum Range of Exercise Price	$ 3.10
Maximum Range of Exercise Price	$ 4.65
Number Outstanding	155,000
Weighted Average Remaining Contractual Life	5 years 3 months 18 days
Weighted Average Exercise Price	$ 3.17
Range Four [Member]
Summary of stock options outstanding and exercisable
Minimum Range of Exercise Price	$ 4.99
Maximum Range of Exercise Price	$ 6.96
Number Outstanding	28,500
Weighted Average Remaining Contractual Life	1 year 6 months
Weighted Average Exercise Price	$ 5.47