Employee Benefit Plans (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
401(k) deferred compensation and profit sharing plan, company contributions	$ 926	$ 882	$ 777
Annual Losses Per Individual	125,000
Charges to earnings for self-insurance reserve	2,066	2,599	1,799
Defined benefit plan termination costs		378
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, future amortization of prior service costs	0
Postretirement Medical and Life Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Expected contribution	54
Certain Directors and Officers [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued benefits payable	1,699	1,857
Deferred compensation expense	172	173	170
Certain Officers [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued benefits payable	254	337
Deferred compensation expense	$ 77	$ 166	$ 0