Equity Compensation, Employment Agreements and Other Benefit Plans (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Deferred Compensation Activity
Number of officers having employment agreements with the company				6
Deferred Compensation Plans
Deferred Compensation Activity
Deferrable compensation by the employee, maximum (as a percent)				100.00%
Expenses related to Deferred Plans	$ 0		$ 17	$ 52		$ 43
Undistributed income deferred	214	[1]		214	[1]		199	[1]
Liability under deferred plans	361			361			302
Deferred Compensation Plans | Non-employee directors
Deferred Compensation Activity
Expenses related to Deferred Plans	0		17	52		43
Undistributed income deferred	214	[1]		214	[1]		199	[1]
Liability under deferred plans	361			361			302
Savings Plan
Deferred Compensation Activity
Employer contribution percentage on first 3 percent of eligible compensation deferred by employees				100.00%
Percentage of eligible compensation deferred by employees qualifying for 100 percent matching contribution				3.00%
Employer contribution percentage on next 2 percent of eligible compensation deferred by employees				50.00%
Percentage of eligible compensation deferred by employees qualifying for 50 percent matching contribution				2.00%
Percentage of employer matching contributions that vest immediately				100.00%
Expenses for matching contributions	$ 63		$ 60	$ 125		$ 120

[1] Represents the cumulative amounts that were deferred by participants through June 30, 2013 and December 31, 2012, which had not been distributed through such date.