Employee Benefit Plans (Additional Information) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
401(k)/Profit Sharing Plan
Contribution match, as a percentage of annual pay	4.00%
Contribution matches, percentage of pre-tax compensation			3.00%
Expenses under the 401(K)/Profit Sharing plan	$ 1,400,000	$ 1,200,000	$ 1,100,000
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum guaranteed benefit term	15 years
Accumulated benefit obligation	8,000,000	7,900,000
Expected amortization of net actuarial loss	140,000
Expected amortization of prior service cost	19,000
Expected contributions in 2014	594,000
Supplemental Executive Retirement Plan [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of income replaced	65.00%
Supplemental Executive Retirement Plan [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of income replaced	75.00%
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected amortization of net actuarial loss	10,000
Expected amortization of prior service cost	22,000
Expected contributions in 2014	$ 145,000