Equity and Stock-Based Compensation - Options Grants (Details)	3 Months Ended		12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Granted	2,192	37,965	40,157	36,835	110,939	165,990
Dividend Yield	2.69%	3.09%		5.00%	5.10%	3.90%
Expected Volatility	69.09%	69.90%		62.13%	53.72%	44.22%
Risk-free Interest Rate	0.58%	0.61%		1.99%	2.85%	2.09%
Expected Term (Years)	4 years	4 years		5 years	6 years	6 years