Fair Value Measurements - Recurring and Nonrecurring (Details) (USD $) | 3 Months Ended | | |
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | $422,073,000 | ' | $443,224,000 | ' |
Valuation allowance | 8,321,000 | 9,489,000 | 9,208,000 | 10,133,000 |
Provision for credit losses | 0 | 0 | ' | ' |
Carrying Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 422,073,000 | ' | 443,224,000 | ' |
Loans receivable | 506,100,000 | ' | 503,149,000 | ' |
Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 7,548,000 | ' | 7,514,000 | ' |
Loans receivable | 0 | ' | 0 | ' |
Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 414,525,000 | ' | 435,710,000 | ' |
Loans receivable | 0 | ' | 0 | ' |
Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Loans receivable | 509,380,000 | ' | 507,361,000 | ' |
Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 422,073,000 | ' | 443,224,000 | ' |
Loans receivable | 509,380,000 | ' | 507,361,000 | ' |
Nonrecurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 0 | ' | 0 | ' |
Nonrecurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 0 | ' | 0 | ' |
Nonrecurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 345,000 | ' | 133,000 | ' |
Nonrecurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 345,000 | ' | 133,000 | ' |
Recurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 7,548,000 | ' | 7,514,000 | ' |
Recurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 414,525,000 | ' | 435,710,000 | ' |
Recurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 0 | ' | 0 | ' |
Recurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Assets, fair value | 422,073,000 | ' | 443,224,000 | ' |
U.S. Government agencies | Recurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
U.S. Government agencies | Recurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 17,975,000 | ' | 18,203,000 | ' |
U.S. Government agencies | Recurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
U.S. Government agencies | Recurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 17,975,000 | ' | 18,203,000 | ' |
Obligations of states and political subdivisions | Recurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Obligations of states and political subdivisions | Recurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 124,514,000 | ' | 158,407,000 | ' |
Obligations of states and political subdivisions | Recurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Obligations of states and political subdivisions | Recurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 124,514,000 | ' | 158,407,000 | ' |
U.S. Government agencies collateralized by residential mortgage obligations | Recurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
U.S. Government agencies collateralized by residential mortgage obligations | Recurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 266,825,000 | ' | 253,709,000 | ' |
U.S. Government agencies collateralized by residential mortgage obligations | Recurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
U.S. Government agencies collateralized by residential mortgage obligations | Recurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 266,825,000 | ' | 253,709,000 | ' |
Private label residential mortgage backed securities | Recurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Private label residential mortgage backed securities | Recurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 5,211,000 | ' | 5,391,000 | ' |
Private label residential mortgage backed securities | Recurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Private label residential mortgage backed securities | Recurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 5,211,000 | ' | 5,391,000 | ' |
Other equity securities | Recurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 7,548,000 | ' | 7,514,000 | ' |
Other equity securities | Recurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Other equity securities | Recurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 0 | ' | 0 | ' |
Other equity securities | Recurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Available-for-sale investment securities | 7,548,000 | ' | 7,514,000 | ' |
Impaired loans | Nonrecurring | Carrying Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 375,000 | ' | 194,000 | ' |
Valuation allowance | 30,000 | ' | 61,000 | ' |
Impaired loans | Nonrecurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 0 | ' | ' | ' |
Impaired loans | Nonrecurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 0 | ' | ' | ' |
Impaired loans | Nonrecurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 345,000 | ' | ' | ' |
Impaired loans | Nonrecurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 345,000 | ' | 133,000 | ' |
Commercial | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Valuation allowance | 2,012,000 | 2,261,000 | 2,444,000 | 2,676,000 |
Real Estate Portfolio Segment | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Valuation allowance | 4,672,000 | 5,536,000 | 5,174,000 | 5,877,000 |
Consumer | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Valuation allowance | 1,391,000 | 1,315,000 | 1,168,000 | 1,541,000 |
Commercial and industrial | Impaired loans | Nonrecurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 0 | ' | ' | ' |
Commercial and industrial | Impaired loans | Nonrecurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 0 | ' | ' | ' |
Commercial and industrial | Impaired loans | Nonrecurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 200,000 | ' | ' | ' |
Commercial and industrial | Impaired loans | Nonrecurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 200,000 | ' | ' | ' |
Equity loans and lines of credit | Impaired loans | Nonrecurring | Level 1 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 0 | ' | 0 | ' |
Equity loans and lines of credit | Impaired loans | Nonrecurring | Level 2 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 0 | ' | 0 | ' |
Equity loans and lines of credit | Impaired loans | Nonrecurring | Level 3 | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | 145,000 | ' | 133,000 | ' |
Equity loans and lines of credit | Impaired loans | Nonrecurring | Fair Value | ' | ' | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' | ' | ' |
Loans receivable | $145,000 | ' | $133,000 | ' |