Stock Compensation (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended
	Mar. 02, 2012	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Restricted Stock [Member]	Mar. 31, 2012 Restricted Stock [Member]	Sep. 30, 2011 Restricted Stock [Member]	Mar. 31, 2011 Restricted Stock [Member]	Sep. 30, 2012 Restricted Stock [Member]	Sep. 30, 2012 Restricted Stock [Member] Minimum [Member]	Sep. 30, 2012 Restricted Stock [Member] Maximum [Member]	Sep. 30, 2012 2008 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for grant under plan (in shares)													3,000,000
Allocated Share-based Compensation Expense		$ 600,000	$ 500,000	$ 2,100,000	$ 2,200,000
Total unrecognized compensation cost related to non-vested share based compensation arrangements		4,600,000		4,600,000
Options Granted (in shares)				323,950
Vesting period, in years	3 years			3 years						3 years	3 years	4 years
Expiration period, in years				10 years
The total intrinsic value of all stock options exercised				$ 1,500,000	$ 16,000
Granted (in shares)						75,000,000			90,495,000	165,495
Granted, Average Grant Date Fair Value (in dollars per share)							$ 12.96	$ 14.80		$ 13.79
Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Term				3 years