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Bank subsidiary (Details 10) (Class of financing receivables, USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2012 | Dec. 31, 2011
Recorded investment: |  |  |
With no related allowance recorded | $ 35,261 | $ 35,261 | $ 105,811
With an allowance recorded | 32,137 | 32,137 | 17,878
Recorded investment | 67,398 | 67,398 | 123,689
Unpaid principal balance: |  |  |
With no related allowance recorded | 46,964 | 46,964 | 124,300
With an allowance recorded | 35,495 | 35,495 | 17,938
Unpaid principal balance | 82,459 | 82,459 | 142,238
Related Allowance | 4,621 | 4,621 | 3,704
Average recorded investment: |  |  |
With no related allowance recorded | 47,367 | 83,173 | 110,109
With an allowance recorded | 22,199 | 17,516 | 19,816
Average recorded investment | 69,566 | 100,689 | 129,925
Interest income recognized: |  |  |
With no related allowance recorded | 386 | 2,462 | 5,726
With an allowance recorded | 182 | 641 | 1,541
Interest income recognized | 568 | 3,103 | 7,267
Residential 1-4 family |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 15,963 | 15,963 | 19,217
With an allowance recorded | 4,504 | 4,504 | 3,525
Recorded investment | 20,467 | 20,467 | 22,742
Unpaid principal balance: |  |  |
With no related allowance recorded | 22,127 | 22,127 | 26,614
With an allowance recorded | 4,504 | 4,504 | 3,525
Unpaid principal balance | 26,631 | 26,631 | 30,139
Related Allowance | 324 | 324 | 203
Average recorded investment: |  |  |
With no related allowance recorded | 15,919 | 17,104 | 21,385
With an allowance recorded | 4,509 | 4,072 | 3,527
Average recorded investment | 20,428 | 21,176 | 24,912
Interest income recognized: |  |  |
With no related allowance recorded | 57 | 225 | 282
With an allowance recorded | 58 | 192 | 201
Interest income recognized | 115 | 417 | 483
Commercial real estate |  |  |
Recorded investment: |  |  |
With no related allowance recorded |  |  | 13,397
With an allowance recorded | 2,929 | 2,929 |
Recorded investment | 2,929 | 2,929 | 13,397
Unpaid principal balance: |  |  |
With no related allowance recorded |  |  | 13,397
With an allowance recorded | 2,929 | 2,929 |
Unpaid principal balance | 2,929 | 2,929 | 13,397
Related Allowance | 7 | 7 |
Average recorded investment: |  |  |
With no related allowance recorded | 2,003 | 9,504 | 13,404
With an allowance recorded | 976 | 326 |
Average recorded investment | 2,979 | 9,830 | 13,404
Interest income recognized: |  |  |
With no related allowance recorded |  | 237 | 747
Interest income recognized |  | 237 | 747
Home equity line of credit |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 584 | 584 | 711
With an allowance recorded | 313 | 313 |
Recorded investment | 897 | 897 | 711
Unpaid principal balance: |  |  |
With no related allowance recorded | 1,376 | 1,376 | 1,612
With an allowance recorded | 421 | 421 |
Unpaid principal balance | 1,797 | 1,797 | 1,612
Related Allowance | 313 | 313 |
Average recorded investment: |  |  |
With no related allowance recorded | 630 | 648 | 954
With an allowance recorded | 104 | 35 |
Average recorded investment | 734 | 683 | 954
Interest income recognized: |  |  |
With no related allowance recorded |  | 1 | 6
Interest income recognized |  | 1 | 6
Residential land |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 18,107 | 18,107 | 30,781
With an allowance recorded | 7,021 | 7,021 | 7,792
Recorded investment | 25,128 | 25,128 | 38,573
Unpaid principal balance: |  |  |
With no related allowance recorded | 22,854 | 22,854 | 39,136
With an allowance recorded | 7,243 | 7,243 | 7,852
Unpaid principal balance | 30,097 | 30,097 | 46,988
Related Allowance | 2,321 | 2,321 | 2,525
Average recorded investment: |  |  |
With no related allowance recorded | 19,876 | 24,184 | 33,398
With an allowance recorded | 7,134 | 7,306 | 8,158
Average recorded investment | 27,010 | 31,490 | 41,556
Interest income recognized: |  |  |
With no related allowance recorded | 296 | 1,020 | 1,779
With an allowance recorded | 122 | 429 | 603
Interest income recognized | 418 | 1,449 | 2,382
Commercial loans |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 585 | 585 | 41,680
With an allowance recorded | 17,370 | 17,370 | 6,561
Recorded investment | 17,955 | 17,955 | 48,241
Unpaid principal balance: |  |  |
With no related allowance recorded | 585 | 585 | 43,516
With an allowance recorded | 20,398 | 20,398 | 6,561
Unpaid principal balance | 20,983 | 20,983 | 50,077
Related Allowance | 1,656 | 1,656 | 976
Average recorded investment: |  |  |
With no related allowance recorded | 8,916 | 31,710 | 40,952
With an allowance recorded | 9,476 | 5,777 | 8,131
Average recorded investment | 18,392 | 37,487 | 49,083
Interest income recognized: |  |  |
With no related allowance recorded | 33 | 979 | 2,912
With an allowance recorded | 2 | 20 | 737
Interest income recognized | 35 | 999 | 3,649
Consumer loans |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 22 | 22 | 25
Recorded investment | 22 | 22 | 25
Unpaid principal balance: |  |  |
With no related allowance recorded | 22 | 22 | 25
Unpaid principal balance | 22 | 22 | 25
Average recorded investment: |  |  |
With no related allowance recorded | 23 | 23 | 16
Average recorded investment | $ 23 | $ 23 | $ 16

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