Share-Based Compensation (Summary of Non-vested Stock Options) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Non-vested Stock Options, Number of Shares [Roll Forward]
Shares, Non-vested stock options, Beginning Balance	179,910
Shares, Non-vested stock options granted	116,800
Shares, Vested stock options	(80,170)
Shares, Forfeited stock options	(16,780)
Shares, Non-vested stock options, Ending Balance	199,760
Non-vested Stock Options, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant Date Fair Value per Share, Non-vested stock options, Beginning Balance	$ 0.44
Weighted Average Grant Date Fair Value per Share, Non-vested stock options granted	$ 0.24
Weighted Average Grant Date Fair Value per Share, Forfeited stock options	$ 0.17
Weighted Average Grant Date Fair Value per Share, Non-vested stock options, Ending Balance	$ 0.29