Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 401K	Dec. 31, 2011 401K	Dec. 31, 2010 401K	Dec. 31, 2008 401K	Dec. 31, 2003 SERP	Dec. 31, 2012 SERP	Dec. 31, 2011 SERP
Defined Benefit Plan Disclosure [Line Items]
Matching contribution by the company, percent							50.00%
Percentage of eligible compensation							8.00%
Company's contribution				$ 182,000	$ 0	$ 0
Deferred compensation expense	821,000	553,000	862,000
Accrued Bonuses, Period Amounts are Paid After Year End	75 days
Accrued balance for annual incentive plan	461,000	191,000
Number of employees covered under the plan								2
Postretirement annual payment								222,000
Period for postretirement payment								10 years
Total accrual under the contribution plan									786,000	601,000
Total amount paid under the purchase and long-term retention agreement plan	95,000	676,000
Shares in ESOP, available to be awarded, value	$ 261,000