Employee Benefit Plans (Details) (USD $)	3 Months Ended
	Mar. 31, 2013 Installment	Mar. 31, 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	$ 161,000	$ 171,000
Deferred Compensation Plan [Abstract]
Number of installments available, minimum	1
Number of installments available, maximum	5
Deferred compensation expense	8,322	8,322
Cash surrender value of life insurance	$ 1,200,000		$ 1,200,000