Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 hours years	Dec. 31, 2010	Dec. 31, 2009	Mar. 31, 2009
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Minimum numbers of years required to be eligible to participate in ESOP	2
Minimum number of hours required for each of the two consecutive years, to be eligible to participate in ESOP	1,000
Shares purchased by ESOP Trust	3,437	4,881	22,515
Common stock aggregate cost	$ 47,000	$ 51,000	$ 289,000
Distribution of benefits to participants, shares	83,020	171,689	89,968
Company outstanding common stock, owned by ESOP	1,302,051
Percentage of outstanding common stock under ESOP	1.70%
Profit sharing plan, salaried employees' eligibility period of service, months	3
Profit sharing plan eligibility age, years	21
Percent of eligible compensation contributable by employee	75.00%
Company match percentage, applied to a defined employee contribution amount	100.00%			100.00%
Percent of eligible employee contribution matched by the Company	2.50%			5.00%
Vesting schedule for matching contribution less than two years				0.00%
Vesting schedule for matching contribution after two years				25.00%
Vesting schedule for matching contribution for subsequent years				25.00%
Vesting schedule for matching contribution after five years				100.00%
Company's contribution	900,000	900,000	1,100,000
Percentage of participant borrowing capacity of vested amount, maximum	50.00%
Maximum [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Participant vested amount	50,000
Minimum [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Participant vested amount	$ 1,000