Fair Value (Details 3) (Significant Unobservable Inputs (Level 3), USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Fair value quantitative information
Fair Value	$ 225,136	$ 252,043
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | One-to-four units
Fair value quantitative information
Fair Value		6,656
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Five or more units
Fair value quantitative information
Fair Value		1,956
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Commercial real estate
Fair value quantitative information
Fair Value	348
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Church
Fair value quantitative information
Fair Value	1,556	1,556
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Income approach | Five or more units | Minimum
Fair value quantitative information
Capitalization rate (as a percent)		6.00%
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Income approach | Five or more units | Maximum
Fair value quantitative information
Capitalization rate (as a percent)		8.50%
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Income approach | Commercial real estate
Fair value quantitative information
Capitalization rate (as a percent)	8.20%
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | One-to-four units | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)		(30.00%)
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | One-to-four units | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)		23.00%
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | Five or more units | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)		(13.00%)
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | Five or more units | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)		17.00%
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | Commercial real estate
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	1.00%
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | Church | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	11.00%	(27.00%)
Fair Value, Measurements, Nonrecurring | Non-performing loans receivable held-for-sale | Sales comparison approach | Church | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	29.00%	29.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | One-to-four units
Fair value quantitative information
Fair Value	1,349	1,284
Fair Value, Measurements, Nonrecurring | Impaired loans | Five or more units
Fair value quantitative information
Fair Value	920	1,679
Fair Value, Measurements, Nonrecurring | Impaired loans | Commercial real estate
Fair value quantitative information
Fair Value	403	3,385
Fair Value, Measurements, Nonrecurring | Impaired loans | Church
Fair value quantitative information
Fair Value	7,079	6,649
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Five or more units | Minimum
Fair value quantitative information
Capitalization rate (as a percent)	7.25%	6.50%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Five or more units | Maximum
Fair value quantitative information
Capitalization rate (as a percent)	9.00%	9.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Commercial real estate
Fair value quantitative information
Capitalization rate (as a percent)	4.50%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Commercial real estate | Minimum
Fair value quantitative information
Capitalization rate (as a percent)		7.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Commercial real estate | Maximum
Fair value quantitative information
Capitalization rate (as a percent)		9.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Church
Fair value quantitative information
Capitalization rate (as a percent)	8.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Church | Minimum
Fair value quantitative information
Capitalization rate (as a percent)		6.75%
Fair Value, Measurements, Nonrecurring | Impaired loans | Income approach | Church | Maximum
Fair value quantitative information
Capitalization rate (as a percent)		8.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | One-to-four units | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(5.00%)	(5.00%)
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | One-to-four units | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	18.00%	18.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Five or more units | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(10.00%)	(26.00%)
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Five or more units | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	0.00%	16.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Commercial real estate
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	2.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Commercial real estate | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)		(17.00%)
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Commercial real estate | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)		(1.00%)
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Church | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(45.00%)	(45.00%)
Fair Value, Measurements, Nonrecurring | Impaired loans | Sales comparison approach | Church | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	16.00%	8.00%
Fair Value, Measurements, Nonrecurring | Real estate owned | Commercial real estate
Fair value quantitative information
Fair Value	1,792	2,752
Fair Value, Measurements, Nonrecurring | Real estate owned | Church
Fair value quantitative information
Fair Value	$ 4,435	$ 5,411
Fair Value, Measurements, Nonrecurring | Real estate owned | Income approach | Commercial real estate
Fair value quantitative information
Capitalization rate (as a percent)	10.00%
Fair Value, Measurements, Nonrecurring | Real estate owned | Income approach | Commercial real estate | Minimum
Fair value quantitative information
Capitalization rate (as a percent)		8.00%
Fair Value, Measurements, Nonrecurring | Real estate owned | Income approach | Commercial real estate | Maximum
Fair value quantitative information
Capitalization rate (as a percent)		11.00%
Fair Value, Measurements, Nonrecurring | Real estate owned | Income approach | Church
Fair value quantitative information
Capitalization rate (as a percent)		11.50%
Fair Value, Measurements, Nonrecurring | Real estate owned | Income approach | Church | Minimum
Fair value quantitative information
Capitalization rate (as a percent)	6.50%
Fair Value, Measurements, Nonrecurring | Real estate owned | Income approach | Church | Maximum
Fair value quantitative information
Capitalization rate (as a percent)	11.50%
Fair Value, Measurements, Nonrecurring | Real estate owned | Sales comparison approach | Commercial real estate | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(67.00%)	(67.00%)
Fair Value, Measurements, Nonrecurring | Real estate owned | Sales comparison approach | Commercial real estate | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	1.00%	1.00%
Fair Value, Measurements, Nonrecurring | Real estate owned | Sales comparison approach | Church | Minimum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	(24.00%)	(12.00%)
Fair Value, Measurements, Nonrecurring | Real estate owned | Sales comparison approach | Church | Maximum
Fair value quantitative information
Adjustment for differences between the comparable sales (as a percent)	7.00%	7.00%