Employee Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013 Installment	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
401(k) Plan [Abstract]
Period of service required to be eligible			3 months
Minimum years of age to be eligible			18 years
Maximum annual contribution per employee, percent (in hundredths)			100.00%
Employer matching contribution of first 1% (in hundredths)			100.00%
Employer matching contribution for next 5% of employee contribution (in hundredths)			50.00%
Employer matching contribution, percent (in hundredths)			3.50%
Additional safe harbor contribution by employer, percent (in hundredths)			6.00%
401K Expense	$ 180	$ 188	$ 341	$ 359
Deferred Compensation Plan [Abstract]
Number of installments available, minimum	1
Number of installments available, maximum	5
Deferred compensation expense	8	8	17	17
Cash surrender value of life insurance	$ 1,194		$ 1,194		$ 1,180