Loans and Allowance for Loan Losses - Credit Quality Indicators (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Credit Quality Indicators
Risk review threshold	$ 20,000
Loans	1,308,372,000	1,450,039,000
Real Estate Loans | Construction Loans
Credit Quality Indicators
Loans	131,981,000	202,803,000
Real Estate Loans | Construction Loans | High Quality
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Construction Loans | Good Quality
Credit Quality Indicators
Loans	464,000	543,000
Real Estate Loans | Construction Loans | Satisfactory
Credit Quality Indicators
Loans	22,284,000	30,446,000
Real Estate Loans | Construction Loans | Merits Attention
Credit Quality Indicators
Loans	78,668,000	93,974,000
Real Estate Loans | Construction Loans | Special Mention
Credit Quality Indicators
Loans	16,797,000	41,739,000
Real Estate Loans | Construction Loans | Substandard
Credit Quality Indicators
Loans	3,939,000	5,054,000
Real Estate Loans | Construction Loans | Substandard Impaired
Credit Quality Indicators
Loans	9,829,000	31,047,000
Real Estate Loans | Construction Loans | Doubtful
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Construction Loans | Loss
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Owner Occupied
Credit Quality Indicators
Loans	342,962,000	348,931,000
Real Estate Loans | Owner Occupied | High Quality
Credit Quality Indicators
Loans	119,000	126,000
Real Estate Loans | Owner Occupied | Good Quality
Credit Quality Indicators
Loans	0	32,000
Real Estate Loans | Owner Occupied | Satisfactory
Credit Quality Indicators
Loans	115,347,000	110,051,000
Real Estate Loans | Owner Occupied | Merits Attention
Credit Quality Indicators
Loans	191,958,000	180,173,000
Real Estate Loans | Owner Occupied | Special Mention
Credit Quality Indicators
Loans	23,396,000	23,326,000
Real Estate Loans | Owner Occupied | Substandard
Credit Quality Indicators
Loans	4,286,000	10,069,000
Real Estate Loans | Owner Occupied | Substandard Impaired
Credit Quality Indicators
Loans	7,856,000	25,154,000
Real Estate Loans | Owner Occupied | Doubtful
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Owner Occupied | Loss
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Non-owner Occupied
Credit Quality Indicators
Loans	211,489,000	242,827,000
Real Estate Loans | Non-owner Occupied | High Quality
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Non-owner Occupied | Good Quality
Credit Quality Indicators
Loans	0	117,000
Real Estate Loans | Non-owner Occupied | Satisfactory
Credit Quality Indicators
Loans	58,577,000	61,416,000
Real Estate Loans | Non-owner Occupied | Merits Attention
Credit Quality Indicators
Loans	129,283,000	134,247,000
Real Estate Loans | Non-owner Occupied | Special Mention
Credit Quality Indicators
Loans	16,084,000	24,307,000
Real Estate Loans | Non-owner Occupied | Substandard
Credit Quality Indicators
Loans	2,136,000	11,162,000
Real Estate Loans | Non-owner Occupied | Substandard Impaired
Credit Quality Indicators
Loans	5,409,000	11,578,000
Real Estate Loans | Non-owner Occupied | Doubtful
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Non-owner Occupied | Loss
Credit Quality Indicators
Loans	0	0
Real Estate Loans | One to Four Family
Credit Quality Indicators
Loans	168,611,000	179,047,000
Real Estate Loans | One to Four Family | High Quality
Credit Quality Indicators
Loans	375,000	423,000
Real Estate Loans | One to Four Family | Good Quality
Credit Quality Indicators
Loans	1,301,000	1,701,000
Real Estate Loans | One to Four Family | Satisfactory
Credit Quality Indicators
Loans	95,727,000	98,992,000
Real Estate Loans | One to Four Family | Merits Attention
Credit Quality Indicators
Loans	56,629,000	57,310,000
Real Estate Loans | One to Four Family | Special Mention
Credit Quality Indicators
Loans	7,862,000	9,112,000
Real Estate Loans | One to Four Family | Substandard
Credit Quality Indicators
Loans	2,850,000	3,586,000
Real Estate Loans | One to Four Family | Substandard Impaired
Credit Quality Indicators
Loans	3,867,000	7,923,000
Real Estate Loans | One to Four Family | Doubtful
Credit Quality Indicators
Loans	0	0
Real Estate Loans | One to Four Family | Loss
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Multifamily
Credit Quality Indicators
Loans	35,337,000	39,881,000
Real Estate Loans | Multifamily | High Quality
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Multifamily | Good Quality
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Multifamily | Satisfactory
Credit Quality Indicators
Loans	7,945,000	8,789,000
Real Estate Loans | Multifamily | Merits Attention
Credit Quality Indicators
Loans	25,681,000	28,824,000
Real Estate Loans | Multifamily | Special Mention
Credit Quality Indicators
Loans	571,000	697,000
Real Estate Loans | Multifamily | Substandard
Credit Quality Indicators
Loans	601,000	629,000
Real Estate Loans | Multifamily | Substandard Impaired
Credit Quality Indicators
Loans	539,000	942,000
Real Estate Loans | Multifamily | Doubtful
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Multifamily | Loss
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Home Equity Lines of Credit
Credit Quality Indicators
Loans	191,888,000	201,220,000
Real Estate Loans | Home Equity Lines of Credit | High Quality
Credit Quality Indicators
Loans	111,000	132,000
Real Estate Loans | Home Equity Lines of Credit | Good Quality
Credit Quality Indicators
Loans	6,756,000	7,545,000
Real Estate Loans | Home Equity Lines of Credit | Satisfactory
Credit Quality Indicators
Loans	118,497,000	125,932,000
Real Estate Loans | Home Equity Lines of Credit | Merits Attention
Credit Quality Indicators
Loans	59,568,000	58,576,000
Real Estate Loans | Home Equity Lines of Credit | Special Mention
Credit Quality Indicators
Loans	4,228,000	4,807,000
Real Estate Loans | Home Equity Lines of Credit | Substandard
Credit Quality Indicators
Loans	1,687,000	2,006,000
Real Estate Loans | Home Equity Lines of Credit | Substandard Impaired
Credit Quality Indicators
Loans	1,041,000	2,222,000
Real Estate Loans | Home Equity Lines of Credit | Doubtful
Credit Quality Indicators
Loans	0	0
Real Estate Loans | Home Equity Lines of Credit | Loss
Credit Quality Indicators
Loans	0	0
Commercial
Credit Quality Indicators
Loans	174,440,000	177,047,000
Commercial | High Quality
Credit Quality Indicators
Loans	2,430,000	2,690,000
Commercial | Good Quality
Credit Quality Indicators
Loans	5,738,000	5,472,000
Commercial | Satisfactory
Credit Quality Indicators
Loans	62,071,000	55,309,000
Commercial | Merits Attention
Credit Quality Indicators
Loans	82,243,000	80,064,000
Commercial | Special Mention
Credit Quality Indicators
Loans	16,809,000	12,224,000
Commercial | Substandard
Credit Quality Indicators
Loans	1,009,000	10,367,000
Commercial | Substandard Impaired
Credit Quality Indicators
Loans	4,140,000	10,921,000
Commercial | Doubtful
Credit Quality Indicators
Loans	0	0
Commercial | Loss
Credit Quality Indicators
Loans	0	0
Consumer and other
Credit Quality Indicators
Loans	51,664,000	58,283,000
Consumer and other | High Quality
Credit Quality Indicators
Loans	2,289,000	1,831,000
Consumer and other | Good Quality
Credit Quality Indicators
Loans	1,316,000	1,482,000
Consumer and other | Satisfactory
Credit Quality Indicators
Loans	22,459,000	27,508,000
Consumer and other | Merits Attention
Credit Quality Indicators
Loans	24,425,000	25,607,000
Consumer and other | Special Mention
Credit Quality Indicators
Loans	551,000	1,189,000
Consumer and other | Substandard
Credit Quality Indicators
Loans	122,000	118,000
Consumer and other | Substandard Impaired
Credit Quality Indicators
Loans	502,000	548,000
Consumer and other | Doubtful
Credit Quality Indicators
Loans	0	0
Consumer and other | Loss
Credit Quality Indicators
Loans	0	0
Total Loans
Credit Quality Indicators
Loans	1,308,372,000	1,450,039,000
Total Loans | High Quality
Credit Quality Indicators
Loans	5,324,000	5,202,000
Total Loans | Good Quality
Credit Quality Indicators
Loans	15,575,000	16,892,000
Total Loans | Satisfactory
Credit Quality Indicators
Loans	502,907,000	518,443,000
Total Loans | Merits Attention
Credit Quality Indicators
Loans	648,455,000	658,775,000
Total Loans | Special Mention
Credit Quality Indicators
Loans	86,298,000	117,401,000
Total Loans | Substandard
Credit Quality Indicators
Loans	16,630,000	42,991,000
Total Loans | Substandard Impaired
Credit Quality Indicators
Loans	33,183,000	90,335,000
Total Loans | Doubtful
Credit Quality Indicators
Loans	0	0
Total Loans | Loss
Credit Quality Indicators
Loans	$ 0	$ 0