Bank subsidiary (Details 5) (USD $) In Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2011	Sep. 30, 2011	Dec. 31, 2010
Allowance for loan losses:
Beginning balance	$ 39,283	$ 40,646	$ 41,679
Charge-offs	(5,656)	(14,794)	(24,815)
Recoveries	764	1,434	2,888
Provision	3,822	10,927	20,894
Ending balance	38,213	38,213	40,646
Ending balance: individually evaluated for impairment	4,809	4,809	3,460
Ending balance: collectively evaluated for impairment	33,404	33,404	37,186
Financing Receivables:
Ending balance	3,674,740	3,674,740	3,546,056
Ending balance: individually evaluated for impairment	134,707	134,707	116,191
Ending balance: collectively evaluated for impairment	3,540,033	3,540,033	3,429,865
Residential 1-4 family
Allowance for loan losses:
Beginning balance	7,529	6,497	5,522
Charge-offs	(997)	(3,692)	(6,142)
Recoveries	57	90	744
Provision	211	3,905	6,373
Ending balance	6,800	6,800	6,497
Ending balance: individually evaluated for impairment	203	203	230
Ending balance: collectively evaluated for impairment	6,597	6,597	6,267
Financing Receivables:
Ending balance	1,997,485	1,997,485	2,087,813
Ending balance: individually evaluated for impairment	28,326	28,326	34,615
Ending balance: collectively evaluated for impairment	1,969,159	1,969,159	2,053,198
Commercial real estate
Allowance for loan losses:
Beginning balance	1,642	1,474	861
Provision	(14)	154	613
Ending balance	1,628	1,628	1,474
Ending balance: collectively evaluated for impairment	1,628	1,628	1,474
Financing Receivables:
Ending balance	320,874	320,874	300,689
Ending balance: individually evaluated for impairment	13,468	13,468	12,156
Ending balance: collectively evaluated for impairment	307,406	307,406	288,533
Home equity line of credit
Allowance for loan losses:
Beginning balance	3,216	4,269	4,679
Charge-offs	(871)	(1,233)	(2,517)
Recoveries	13	17	63
Provision	1,731	1,036	2,044
Ending balance	4,089	4,089	4,269
Ending balance: collectively evaluated for impairment	4,089	4,089	4,269
Financing Receivables:
Ending balance	503,205	503,205	416,453
Ending balance: individually evaluated for impairment	1,255	1,255	827
Ending balance: collectively evaluated for impairment	501,950	501,950	415,626
Residential land
Allowance for loan losses:
Beginning balance	5,025	6,411	4,252
Charge-offs	(522)	(3,312)	(6,487)
Recoveries	114	133	63
Provision	90	1,475	8,583
Ending balance	4,707	4,707	6,411
Ending balance: individually evaluated for impairment	3,247	3,247	1,642
Ending balance: collectively evaluated for impairment	1,460	1,460	4,769
Financing Receivables:
Ending balance	47,571	47,571	65,599
Ending balance: individually evaluated for impairment	40,072	40,072	39,631
Ending balance: collectively evaluated for impairment	7,499	7,499	25,968
Commercial construction
Allowance for loan losses:
Beginning balance	1,729	1,714	3,068
Provision	170	185	(1,354)
Ending balance	1,899	1,899	1,714
Ending balance: collectively evaluated for impairment	1,899	1,899	1,714
Financing Receivables:
Ending balance	42,194	42,194	38,079
Ending balance: collectively evaluated for impairment	42,194	42,194	38,079
Residential construction
Allowance for loan losses:
Beginning balance	5	7	19
Provision	(1)	(3)	(12)
Ending balance	4	4	7
Ending balance: collectively evaluated for impairment	4	4	7
Financing Receivables:
Ending balance	3,191	3,191	5,602
Ending balance: collectively evaluated for impairment	3,191	3,191	5,602
Commercial loans
Allowance for loan losses:
Beginning balance	14,869	16,015	19,498
Charge-offs	(2,481)	(4,254)	(6,261)
Recoveries	432	732	1,537
Provision	1,512	1,839	1,241
Ending balance	14,332	14,332	16,015
Ending balance: individually evaluated for impairment	1,359	1,359	1,588
Ending balance: collectively evaluated for impairment	12,973	12,973	14,427
Financing Receivables:
Ending balance	676,640	676,640	551,683
Ending balance: individually evaluated for impairment	51,561	51,561	28,886
Ending balance: collectively evaluated for impairment	625,079	625,079	522,797
Consumer loans
Allowance for loan losses:
Beginning balance	3,471	3,325	2,590
Charge-offs	(785)	(2,303)	(3,408)
Recoveries	148	462	481
Provision	628	1,978	3,662
Ending balance	3,462	3,462	3,325
Ending balance: collectively evaluated for impairment	3,462	3,462	3,325
Financing Receivables:
Ending balance	83,580	83,580	80,138
Ending balance: individually evaluated for impairment	25	25	76
Ending balance: collectively evaluated for impairment	83,555	83,555	80,062
Unallocated
Allowance for loan losses:
Beginning balance	1,797	934	1,190
Provision	(505)	358	(256)
Ending balance	1,292	1,292	934
Ending balance: collectively evaluated for impairment	$ 1,292	$ 1,292	$ 934

The amount of the recorded investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, accounts receivable (with terms exceeding one year), notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Receivable

-URI http://asc.fasb.org/extlink&oid=6953735

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A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524

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