Fair Value Measurement (Details 3) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets:
Mortgage servicing assets	$ 4,358	$ 3,921
Permanent Real Estate Loans [Member]
Assets:
Impaired loans	30,429	38,627
Other real estate owned net	4,753	7,586
Construction Loans [Member]
Assets:
Impaired loans	10,900	14,953
Other real estate owned net	5,877	7,581
Consumer Loan [Member]
Assets:
Impaired loans	17	282
Commercial Loans [Member]
Assets:
Impaired loans	400	291
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Mortgage servicing assets
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Permanent Real Estate Loans [Member]
Assets:
Impaired loans
Other real estate owned net
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Construction Loans [Member]
Assets:
Impaired loans
Other real estate owned net
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Consumer Loan [Member]
Assets:
Impaired loans
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Loans [Member]
Assets:
Impaired loans
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Mortgage servicing assets	4,358	3,921
Significant Other Observable Inputs (Level 2) [Member] | Permanent Real Estate Loans [Member]
Assets:
Impaired loans
Other real estate owned net
Significant Other Observable Inputs (Level 2) [Member] | Construction Loans [Member]
Assets:
Impaired loans
Other real estate owned net
Significant Other Observable Inputs (Level 2) [Member] | Consumer Loan [Member]
Assets:
Impaired loans
Significant Other Observable Inputs (Level 2) [Member] | Commercial Loans [Member]
Assets:
Impaired loans
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Mortgage servicing assets
Significant Unobservable Inputs (Level 3) [Member] | Permanent Real Estate Loans [Member]
Assets:
Impaired loans	30,429	38,627
Other real estate owned net	4,753	7,586
Significant Unobservable Inputs (Level 3) [Member] | Construction Loans [Member]
Assets:
Impaired loans	10,900	14,953
Other real estate owned net	5,877	7,581
Significant Unobservable Inputs (Level 3) [Member] | Consumer Loan [Member]
Assets:
Impaired loans	17	282
Significant Unobservable Inputs (Level 3) [Member] | Commercial Loans [Member]
Assets:
Impaired loans	$ 400	$ 291