Common Stock (Stock Option Pricing Assumptions) (Details) (Employee Stock Option [Member])	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011 Minimum [Member]		Dec. 31, 2011 Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		0.94%		1.825%
Expected volatility rate of common stock		67.70%		70.30%
Expected life of options in years		3 years 6 months	[1]	4 years
Dividend yield	0.00%
Vesting period in years		3 years 6 months		4 years

[1] Grants were made to an optionee for whom the Company was able to reasonably estimate the expected life of the award.