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Bank subsidiary (Details 12) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | $ 123,689 | $ 101,982
Unpaid principal balance | 142,238 | 115,543
Related Allowance | 3,704 | 3,460
Average recorded investment | 129,925 | 97,791
Interest income recognized | 7,267 | 5,286
With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 105,811 | 86,179
Unpaid principal balance | 124,300 | 99,691
Average recorded investment | 110,109 | 88,435
Interest income recognized | 5,726 | 4,602
With an allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 17,878 | 15,803
Unpaid principal balance | 17,938 | 15,852
Related Allowance | 3,704 | 3,460
Average recorded investment | 19,816 | 9,356
Interest income recognized | 1,541 | 684
Residential 1-4 family |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 22,742 | 22,122
Unpaid principal balance | 30,139 | 28,609
Related Allowance | 203 | 230
Average recorded investment | 24,912 | 17,416
Interest income recognized | 483 | 453
Residential 1-4 family | With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 19,217 | 18,205
Unpaid principal balance | 26,614 | 24,692
Average recorded investment | 21,385 | 14,609
Interest income recognized | 282 | 278
Residential 1-4 family | With an allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 3,525 | 3,917
Unpaid principal balance | 3,525 | 3,917
Related Allowance | 203 | 230
Average recorded investment | 3,527 | 2,807
Interest income recognized | 201 | 175
Commercial real estate |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 13,397 | 12,156
Unpaid principal balance | 13,397 | 12,156
Average recorded investment | 13,404 | 14,276
Interest income recognized | 747 | 979
Commercial real estate | With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 13,397 | 12,156
Unpaid principal balance | 13,397 | 12,156
Average recorded investment | 13,404 | 14,276
Interest income recognized | 747 | 979
Home equity line of credit |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 711 |
Unpaid principal balance | 1,612 |
Average recorded investment | 954 |
Interest income recognized | 6 |
Home equity line of credit | With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 711 |
Unpaid principal balance | 1,612 |
Average recorded investment | 954 |
Interest income recognized | 6 |
Residential land |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 38,573 | 38,818
Unpaid principal balance | 46,988 | 45,892
Related Allowance | 2,525 | 1,642
Average recorded investment | 41,556 | 33,667
Interest income recognized | 2,382 | 1,826
Residential land | With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 30,781 | 33,777
Unpaid principal balance | 39,136 | 40,802
Average recorded investment | 33,398 | 29,914
Interest income recognized | 1,779 | 1,499
Residential land | With an allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 7,792 | 5,041
Unpaid principal balance | 7,852 | 5,090
Related Allowance | 2,525 | 1,642
Average recorded investment | 8,158 | 3,753
Interest income recognized | 603 | 327
Commercial loans |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 48,241 | 28,886
Unpaid principal balance | 50,077 | 28,886
Related Allowance | 976 | 1,588
Average recorded investment | 49,083 | 32,432
Interest income recognized | 3,649 | 2,028
Commercial loans | With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 41,680 | 22,041
Unpaid principal balance | 43,516 | 22,041
Average recorded investment | 40,952 | 29,636
Interest income recognized | 2,912 | 1,846
Commercial loans | With an allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 6,561 | 6,845
Unpaid principal balance | 6,561 | 6,845
Related Allowance | 976 | 1,588
Average recorded investment | 8,131 | 2,796
Interest income recognized | 737 | 182
Consumer loans |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 25 |
Unpaid principal balance | 25 |
Average recorded investment | 16 |
Consumer loans | With no related allowance recorded |  |
Carrying amount and the total unpaid principal balance of impaired loans |  |
Recorded investment | 25 |
Unpaid principal balance | 25 |
Average recorded investment | $ 16 |

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