Stock Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Stock Compensation
Stock compensation expense	$ 769
Compensation expense related to unvested options and restricted shares
2013 (nine months)	2,285
2014	1,177
2015	600
2016	44
Total	$ 4,106
Options
Stock Compensation
Granted (in shares)	360,756
Components used to estimate fair values of the stock options granted
Weighted average fair value of options at grant date (in dollars per share)	$ 4.09
Risk free interest rate, minimum (as a percent)	0.95%
Risk free interest rate, maximum (as a percent)	1.01%
Pre-vest forfeiture rates (as a percent)	0.00%
Estimated life	7 years
Expected volatility, minimum (as a percent)	41.085%
Expected volatility, maximum (as a percent)	41.181%
Stock options granted but not yet vested (in shares)	639,749,000
Options | Minimum
Components used to estimate fair values of the stock options granted
Dividend Yield (as a percent)	2.00%
Options | Maximum
Components used to estimate fair values of the stock options granted
Dividend Yield (as a percent)	3.60%
Restricted stock units, which vest upon achievement of certain performance objectives
Components used to estimate fair values of the stock options granted
Restricted Stock Granted (in shares)	42,587
Fair market value on date of grant (in dollars per share)	$ 12.26
Vesting period	1 year
Restricted stock award
Components used to estimate fair values of the stock options granted
Restricted shares granted but not yet vested (in shares)	168,986,000
Restricted stock units, settled in cash or shares of common stock
Components used to estimate fair values of the stock options granted
Restricted Stock Granted (in shares)	65,533
Fair market value on date of grant (in dollars per share)	$ 12.80