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Loans - Impaired Loans - Recorded Investment, Unpaid Principal Balance and Related Allowance (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Recorded Investment |  |
With no related allowance recorded | $ 20,725 | $ 35,011
With an allowance recorded | 161 | 875
Total impaired loans | 20,886 | 35,886
Unpaid Principal Balance |  |
With no related allowance recorded | 24,718 | 41,003
With an allowance recorded | 166 | 997
Total impaired loans | 24,884 | 42,000
Related Allowance |  |
With an allowance recorded | 34 | 278
Commercial |  |
Recorded Investment |  |
With no related allowance recorded | 70 | 1,500
With an allowance recorded | 3 |
Unpaid Principal Balance |  |
With no related allowance recorded | 149 | 2,114
With an allowance recorded | 8 |
Related Allowance |  |
With an allowance recorded | 3 |
Real estate - commercial | Owner occupied general purpose |  |
Recorded Investment |  |
With no related allowance recorded | 2,314 | 7,125
Unpaid Principal Balance |  |
With no related allowance recorded | 3,004 | 7,870
Real estate - commercial | Owner occupied special purpose |  |
Recorded Investment |  |
With no related allowance recorded | 763 | 1,798
Unpaid Principal Balance |  |
With no related allowance recorded | 871 | 1,941
Real estate - commercial | Non-owner occupied general purpose |  |
Recorded Investment |  |
With no related allowance recorded | 1,047 | 4,831
With an allowance recorded |  | 76
Unpaid Principal Balance |  |
With no related allowance recorded | 1,065 | 5,653
With an allowance recorded |  | 76
Related Allowance |  |
With an allowance recorded |  | 21
Real estate - commercial | Non-owner occupied special purpose |  |
Recorded Investment |  |
With no related allowance recorded |  | 1,423
Unpaid Principal Balance |  |
With no related allowance recorded |  | 1,930
Real estate - commercial | Farm |  |
Recorded Investment |  |
With no related allowance recorded | 1,272 |
Unpaid Principal Balance |  |
With no related allowance recorded | 1,338 |
Real estate - construction | Homebuilder |  |
Recorded Investment |  |
With no related allowance recorded |  | 1,791
Unpaid Principal Balance |  |
With no related allowance recorded |  | 1,791
Real estate - construction | Commercial speculative |  |
Recorded Investment |  |
With no related allowance recorded | 83 |
Unpaid Principal Balance |  |
With no related allowance recorded | 86 |
Real estate - construction | All other |  |
Recorded Investment |  |
With no related allowance recorded |  | 291
With an allowance recorded |  | 270
Unpaid Principal Balance |  |
With no related allowance recorded |  | 323
With an allowance recorded |  | 306
Related Allowance |  |
With an allowance recorded |  | 98
Real estate - residential | Investor |  |
Recorded Investment |  |
With no related allowance recorded | 1,906 | 2,595
With an allowance recorded |  | 135
Unpaid Principal Balance |  |
With no related allowance recorded | 2,259 | 3,024
With an allowance recorded |  | 145
Related Allowance |  |
With an allowance recorded |  | 24
Real estate - residential | Owner occupied |  |
Recorded Investment |  |
With no related allowance recorded | 10,539 | 11,419
With an allowance recorded | 112 | 23
Unpaid Principal Balance |  |
With no related allowance recorded | 11,999 | 12,816
With an allowance recorded | 112 | 65
Related Allowance |  |
With an allowance recorded | 31 | 38
Real estate - residential | Revolving and junior liens |  |
Recorded Investment |  |
With no related allowance recorded | 2,731 | 2,238
With an allowance recorded | 46 | 371
Unpaid Principal Balance |  |
With no related allowance recorded | 3,947 | 3,541
With an allowance recorded | $ 46 | 405
Related Allowance |  |
With an allowance recorded |  | $ 97

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