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Bank segment - Principal balance of impaired loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Recorded investment: |  |
With no related allowance recorded | $ 19,149 | $ 19,806
With an allowance recorded | 41,572 | 33,879
Recorded investment | 60,721 | 53,685
Unpaid principal balance: |  |
With no related allowance recorded | 22,210 | 22,934
With an allowance recorded | 42,548 | 34,696
Unpaid principal balance | 64,758 | 57,630
Related Allowance | 6,823 | 6,320
Average recorded investment: |  |
With no related allowance recorded | 19,003 | 22,439
With an allowance recorded | 36,177 | 26,804
Average recorded investment | 55,180 | 49,243
Interest income recognized: |  |
With no related allowance recorded | 73 | 144
With an allowance recorded | 246 | 265
Interest income recognized | 319 | 409
Residential 1-4 family |  |
Recorded investment: |  |
With no related allowance recorded | 10,502 | 10,596
With an allowance recorded | 12,083 | 11,861
Recorded investment | 22,585 | 22,457
Unpaid principal balance: |  |
With no related allowance recorded | 11,606 | 11,805
With an allowance recorded | 12,286 | 11,914
Unpaid principal balance | 23,892 | 23,719
Related Allowance | 1,653 | 1,453
Average recorded investment: |  |
With no related allowance recorded | 10,392 | 11,552
With an allowance recorded | 12,018 | 11,510
Average recorded investment | 22,410 | 23,062
Interest income recognized: |  |
With no related allowance recorded | 51 | 89
With an allowance recorded | 122 | 126
Interest income recognized | 173 | 215
Commercial real estate |  |
Recorded investment: |  |
With no related allowance recorded | 1,166 | 1,188
With an allowance recorded | 2,561 | 0
Recorded investment | 3,727 | 1,188
Unpaid principal balance: |  |
With no related allowance recorded | 1,429 | 1,436
With an allowance recorded | 2,570 | 0
Unpaid principal balance | 3,999 | 1,436
Related Allowance | 50 | 0
Average recorded investment: |  |
With no related allowance recorded | 1,173 | 555
With an allowance recorded | 854 | 4,482
Average recorded investment | 2,027 | 5,037
Interest income recognized: |  |
With no related allowance recorded | 0 | 0
With an allowance recorded | 0 | 0
Interest income recognized | 0 | 0
Home equity line of credit |  |
Recorded investment: |  |
With no related allowance recorded | 913 | 707
With an allowance recorded | 2,907 | 2,518
Recorded investment | 3,820 | 3,225
Unpaid principal balance: |  |
With no related allowance recorded | 1,159 | 948
With an allowance recorded | 2,977 | 2,579
Unpaid principal balance | 4,136 | 3,527
Related Allowance | 629 | 442
Average recorded investment: |  |
With no related allowance recorded | 849 | 400
With an allowance recorded | 2,944 | 626
Average recorded investment | 3,793 | 1,026
Interest income recognized: |  |
With no related allowance recorded | 0 | 1
With an allowance recorded | 27 | 6
Interest income recognized | 27 | 7
Residential land |  |
Recorded investment: |  |
With no related allowance recorded | 1,489 | 1,644
With an allowance recorded | 2,988 | 4,039
Recorded investment | 4,477 | 5,683
Unpaid principal balance: |  |
With no related allowance recorded | 2,185 | 2,412
With an allowance recorded | 2,988 | 4,117
Unpaid principal balance | 5,173 | 6,529
Related Allowance | 841 | 891
Average recorded investment: |  |
With no related allowance recorded | 1,590 | 2,637
With an allowance recorded | 3,378 | 5,189
Average recorded investment | 4,968 | 7,826
Interest income recognized: |  |
With no related allowance recorded | 16 | 52
With an allowance recorded | 67 | 83
Interest income recognized | 83 | 135
Commercial loans |  |
Recorded investment: |  |
With no related allowance recorded | 5,079 | 5,671
With an allowance recorded | 21,020 | 15,448
Recorded investment | 26,099 | 21,119
Unpaid principal balance: |  |
With no related allowance recorded | 5,831 | 6,333
With an allowance recorded | 21,714 | 16,073
Unpaid principal balance | 27,545 | 22,406
Related Allowance | 3,643 | 3,527
Average recorded investment: |  |
With no related allowance recorded | 4,999 | 7,295
With an allowance recorded | 16,970 | 4,982
Average recorded investment | 21,969 | 12,277
Interest income recognized: |  |
With no related allowance recorded | 6 | 2
With an allowance recorded | 30 | 50
Interest income recognized | 36 | 52
Consumer loans |  |
Recorded investment: |  |
With no related allowance recorded |  | 0
With an allowance recorded | 13 | 13
Recorded investment | 13 | 13
Unpaid principal balance: |  |
With no related allowance recorded |  | 0
With an allowance recorded | 13 | 13
Unpaid principal balance | 13 | 13
Related Allowance | 7 | 7
Average recorded investment: |  |
With no related allowance recorded |  | 0
With an allowance recorded | 13 | 15
Average recorded investment | 13 | 15
Interest income recognized: |  |
With an allowance recorded | $ 0 | $ 0

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