Fair Value Measurements - Quantitative Information (Details) (Fair value, measurements, nonrecurring, USD $) | 9 Months Ended | 12 Months Ended |
In Thousands, unless otherwise specified | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013 |
Impaired collateral-dependent loans, repossesions and other real estate owned | Minimum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 11.00% | 10.50% |
Impaired collateral-dependent loans, repossesions and other real estate owned | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -72.40% | -75.80% | -80.00% |
Impaired collateral-dependent loans, repossesions and other real estate owned | Maximum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | 9.60% | ' | ' |
Impaired collateral-dependent loans, repossesions and other real estate owned | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 175.20% | 102.90% | 112.00% |
Impaired collateral-dependent loans, repossesions and other real estate owned | Weighted average | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | 9.30% | 7.10% | 7.97% |
Impaired collateral-dependent loans, repossesions and other real estate owned | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -12.80% | 0.20% | 0.75% |
Fair Value | Impaired collateral-dependent loans, repossesions and other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 5,659 | 10,584 | 7,457 |
Fair Value | Collateral-dependent loans | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 1,609 | 1,922 | 1,442 |
Fair Value | Other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 4,050 | 8,662 | 6,015 |
Commercial real estate | Collateral-dependent loans | Minimum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 9.00% | ' |
Commercial real estate | Collateral-dependent loans | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -35.10% | -70.00% | -35.10% |
Commercial real estate | Collateral-dependent loans | Minimum | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | ' | 10.50% |
Commercial real estate | Collateral-dependent loans | Maximum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 12.50% | ' |
Commercial real estate | Collateral-dependent loans | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 5.80% | 210.10% | 5.80% |
Commercial real estate | Collateral-dependent loans | Maximum | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | ' | 10.50% |
Commercial real estate | Collateral-dependent loans | Weighted average | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 10.10% | ' |
Commercial real estate | Collateral-dependent loans | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -14.60% | -14.30% | -14.60% |
Commercial real estate | Collateral-dependent loans | Weighted average | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | ' | 10.50% |
Commercial real estate | Other real estate owned | Minimum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 8.90% | ' |
Commercial real estate | Other real estate owned | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | -75.80% | -75.80% |
Commercial real estate | Other real estate owned | Minimum | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | ' | 8.00% |
Commercial real estate | Other real estate owned | Maximum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 10.50% | ' |
Commercial real estate | Other real estate owned | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | 100.00% | 100.00% |
Commercial real estate | Other real estate owned | Maximum | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | ' | 10.50% |
Commercial real estate | Other real estate owned | Weighted average | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 9.50% | ' |
Commercial real estate | Other real estate owned | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | -1.20% | -1.50% |
Commercial real estate | Other real estate owned | Weighted average | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | ' | 9.50% |
Commercial real estate | Fair Value | Collateral-dependent loans | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | ' | 316 |
Commercial real estate | Fair Value | Collateral-dependent loans | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 1,281 | 358 | 316 |
Commercial real estate | Fair Value | Collateral-dependent loans | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 1,281 | 358 | ' |
Commercial real estate | Fair Value | Other real estate owned | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | ' | 1,983 |
Commercial real estate | Fair Value | Other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 840 | 2,519 | 1,983 |
Commercial real estate | Fair Value | Other real estate owned | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | 2,519 | ' |
Residential real estate | Collateral-dependent loans | Minimum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 9.20% | ' |
Residential real estate | Collateral-dependent loans | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 5.20% | -68.00% | -6.70% |
Residential real estate | Collateral-dependent loans | Maximum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 10.80% | ' |
Residential real estate | Collateral-dependent loans | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 26.50% | 183.90% | 74.50% |
Residential real estate | Collateral-dependent loans | Weighted average | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 9.80% | ' |
Residential real estate | Collateral-dependent loans | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 15.90% | 3.70% | 29.70% |
Residential real estate | Other real estate owned | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -25.00% | -80.00% | -80.00% |
Residential real estate | Other real estate owned | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 15.40% | 31.30% | 112.00% |
Residential real estate | Other real estate owned | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 1.40% | -1.00% | -0.50% |
Residential real estate | Fair Value | Collateral-dependent loans | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | ' | 1,061 |
Residential real estate | Fair Value | Collateral-dependent loans | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 101 | 1,102 | 1,061 |
Residential real estate | Fair Value | Collateral-dependent loans | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 101 | 1,102 | ' |
Residential real estate | Fair Value | Other real estate owned | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | ' | 905 |
Residential real estate | Fair Value | Other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 427 | 1,555 | 905 |
Residential real estate | Fair Value | Other real estate owned | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 427 | 1,555 | ' |
Construction/development | Collateral-dependent loans | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | -32.00% | ' |
Construction/development | Collateral-dependent loans | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | 30.00% | ' |
Construction/development | Collateral-dependent loans | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | -0.10% | ' |
Construction/development | Other real estate owned | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -72.40% | -63.40% | -63.40% |
Construction/development | Other real estate owned | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 175.20% | 90.00% | 90.00% |
Construction/development | Other real estate owned | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -12.80% | 2.40% | 2.50% |
Construction/development | Fair Value | Collateral-dependent loans | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 0 | 26 | 0 |
Construction/development | Fair Value | Collateral-dependent loans | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | 436 | ' |
Construction/development | Fair Value | Other real estate owned | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | ' | 3,127 |
Construction/development | Fair Value | Other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 2,783 | 3,860 | 3,127 |
Construction/development | Fair Value | Other real estate owned | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 2,783 | 3,860 | ' |
Multi-family and farmland | Fair Value | Collateral-dependent loans | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 0 | ' | ' |
Multi-family and farmland | Fair Value | Other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | 381 | 0 |
Commercial loans | Collateral-dependent loans | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 9.40% | ' | 9.40% |
Commercial loans | Collateral-dependent loans | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 39.50% | ' | 39.50% |
Commercial loans | Collateral-dependent loans | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 24.50% | ' | 24.50% |
Commercial loans | Other real estate owned | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | -45.00% | ' | ' |
Commercial loans | Other real estate owned | Minimum | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | 9.30% | ' | ' |
Commercial loans | Other real estate owned | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 113.70% | ' | ' |
Commercial loans | Other real estate owned | Maximum | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | 9.60% | ' | ' |
Commercial loans | Other real estate owned | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | 1.40% | ' | ' |
Commercial loans | Other real estate owned | Weighted average | Income approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | 9.30% | ' | ' |
Commercial loans | Fair Value | Collateral-dependent loans | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | ' | 65 |
Commercial loans | Fair Value | Collateral-dependent loans | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 227 | 436 | 65 |
Commercial loans | Fair Value | Collateral-dependent loans | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 227 | ' | ' |
Commercial loans | Fair Value | Other real estate owned | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | 840 | ' | ' |
Commercial and industrial | Other real estate owned | Minimum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 9.50% | ' |
Commercial and industrial | Other real estate owned | Minimum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | -63.90% | ' |
Commercial and industrial | Other real estate owned | Maximum | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 11.00% | ' |
Commercial and industrial | Other real estate owned | Maximum | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | 102.90% | ' |
Commercial and industrial | Other real estate owned | Weighted average | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Capitalization rate | ' | 10.50% | ' |
Commercial and industrial | Other real estate owned | Weighted average | Sales comparison approach | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Adjustments for comparability | ' | -2.60% | ' |
Commercial and industrial | Fair Value | Other real estate owned | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | 347 | ' |
Commercial and industrial | Fair Value | Other real estate owned | Level 3 | ' | ' | ' |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | ' | ' |
Assets | ' | 347 | 0 |