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Allowance for Loan Losses Allowance for Loan Losses Narrative (Details) (USD $) | 3 Months Ended | 12 Months Ended | 60 Months Ended
--- | --- | --- | ---
Mar. 31, 2014 loan | Mar. 31, 2013 loan | Dec. 31, 2013 loan | Dec. 31, 2012 | Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Allowance for Loan and Lease Losses, Related Loans, Percentage | 0.40% |  | 0.40% |  |
Allowance for Loan and Lease Losses, Related Loans, Period Increase (Decrease) | $ 40,000 |  |  |  |
Less allowance for loan losses | 11,655,000 | 12,720,000 | 11,514,000 | 12,500,000 | 11,514,000
Percentage of Impaired Loans Requiring Adjustments in Subsequent Periods |  |  |  | 43.00% |
Loan value, lower range | 75.00% |  |  |  |
Construction loans accrual to company capital | 25.70% |  |  |  |
Constructions loan portfolio maximum to company capital | 100.00% |  |  |  |
Construction and non owner occupied commercial real estate | 75.90% |  |  |  |
Construction And Non Owner Occupied Commercial Real Estate Loans Maximum Loan Portfolio To Company Capital | 300.00% |  |  |  |
Outstanding loans and commitments subject by independent consulting firm | 50.00% |  |  |  |
Residential loans typical loan to value range, high | 80.00% |  |  |  |
Collateralized consumer loans to individuals loan to value maximum, lower range | 80.00% |  |  |  |
Collateralized consumer loans to individuals loan to value maximum, higher range | 90.00% |  |  |  |
Financing Receivable, Modifications, Number of Contracts | 101 | 106 | 99 |  |
Financing Receivable, Modifications, Recorded Investment | 28,796,000 | 31,147,000 | 29,098,000 |  | 29,098,000
Financing Receivable Modifications Number Of Contracts Greater Than30 Days Past Due Place In T D R In Previous12 Months | 13 | 11 |  |  |
Financing Receivable Recorded Investment Greater Than30 Days Past Due | 1,915,000 | 2,503,000 |  |  |
Financing Receivable, Number Of Loans Classified As Troubled Debt Restructurings That Had Been Placed On TDR Status In Previous 12 Months | 2 | 2 |  |  |
Loans classified as TDR in last 12 months | 301,000 | 409,000 |  |  |
Financing Receivable Modifications Number Of Contracts During Period | 3 | 7 |  |  |
Financing Receivable Modifications Post Modification Recorded Investment During Period | 293,000 | 2,948,000 |  |  |
Pre-Modification Outstanding Recorded Investment | 349,000 | 2,959,000 |  |  |
Financing Receivable, Number Of Loans Classified As Troubled Debt Restructurings That Are Involved In Bankruptcy | 12 |  |  |  |
Financing Receivable, Loans Classified As Troubled Debt Restructurings That Are Involved In Bankruptcy | 1,675,000 |  |  |  |
Financing Receivable Number Of Loans Classified As Troubled Debt Restructurings That Were On Non Accrual Status | 17 |  |  |  |
Financing Receivable, Number of Loans Classified As Troubled Debt Restructurings Classified As NonAccrual | 2,417,000 |  |  |  |
Financing Receivable, Number Of Loans Classified As Troubled Debt Restructurings Involved In Foreclosure | 5 |  |  |  |
Other Real Estate, Average Percentage of Sales Price below Appraised Value | 19.00% |  |  |  |
Other Real Estate, Additional Discount Percentage to Calculate Allowances for Losses | 20.00% |  |  |  |
Risk Based Ratios, Weighted-Average Required Reserve as Percent of Total Loans |  |  |  |  | 1.31%
Consumer Loan [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Delinquent period before residential loans placed on non accrual status | 120 days |  |  |  |
Residential Construction [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Less allowance for loan losses | 22,000 | 9,000 | 21,000 | 11,000 | 21,000
Delinquent period before residential loans placed on non accrual status | 90 days |  |  |  |
Financing Receivable Modifications Number Of Contracts During Period | 0 | 0 |  |  |
Unallocated Financing Receivables [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Less allowance for loan losses | 1,830,000 | 1,089,000 | 1,678,000 | 842,000 | 1,678,000
Number Of Days Past Due | 30 days | 30 days |  |  |
Unallocated Reserves [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Less allowance for loan losses | 1,830,000 | 1,089,000 | 1,678,000 |  | 1,678,000
Unallocated Reserves [Member] | Unallocated Financing Receivables [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Less allowance for loan losses | 1,830,000 | 1,089,000 | 1,678,000 |  | 1,678,000
Minimum [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Risk Based Ratios, Weighted-Average Required Reserve as Percent of Total Loans |  |  |  |  | 0.88%
Regulatory Capital Requirements, Estimated Required Reserve |  |  |  |  | 8,700,000
Maximum [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Risk Based Ratios, Weighted-Average Required Reserve as Percent of Total Loans |  |  |  |  | 1.60%
Regulatory Capital Requirements, Estimated Required Reserve |  |  |  |  | $ 13,900,000

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