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Investment Securities (Tables) | 6 Months Ended
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Jun. 30, 2015
Investments Debt And Equity Securities [Abstract] |
Investment Securities Available-for-Sale and Held-to-Maturity | Details of investment securities available-for-sale and held-to-maturity as of June 30, 2015 and December 31, 2014 are as follows:
|  | Available-for-Sale |
|  | June 30, 2015 |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in Thousands) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 138,119 |  |  | $ | 1,216 |  |  | $ | (566 | ) |  | $ | 138,769 |
Commercial |  |  | 45,144 |  |  |  | 237 |  |  |  | (234 | ) |  |  | 45,147 |
Obligations of states and political subdivisions |  |  | 14,566 |  |  |  | 907 |  |  |  | (12 | ) |  |  | 15,461 |
Obligations of U.S. government-sponsored agencies |  |  | 1,999 |  |  |  | 1 |  |  |  | — |  |  |  | 2,000 |
Corporate notes |  |  | 791 |  |  |  | — |  |  |  | (1 | ) |  |  | 790 |
U.S. Treasury securities |  |  | 80 |  |  |  | — |  |  |  | — |  |  |  | 80 |
Total |  | $ | 200,699 |  |  | $ | 2,361 |  |  | $ | (813 | ) |  | $ | 202,247 |
|  | Held-to-Maturity |
|  | June 30, 2015 |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in Thousands) |
Obligations of U.S. government-sponsored agencies |  | $ | 25,093 |  |  | $ | 23 |  |  | $ | (235 | ) |  | $ | 24,881 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  |  | 17,256 |  |  |  | 48 |  |  |  | (130 | ) |  |  | 17,174 |
Obligations of states and political subdivisions |  |  | 1,580 |  |  |  | — |  |  |  | (6 | ) |  |  | 1,574 |
Total |  | $ | 43,929 |  |  | $ | 71 |  |  | $ | (371 | ) |  | $ | 43,629 |
|  | Available-for-Sale |
|  | December 31, 2014 |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (Dollars in Thousands) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 139,980 |  |  | $ | 1,896 |  |  | $ | (192 | ) |  | $ | 141,684 |
Commercial |  |  | 35,873 |  |  |  | 164 |  |  |  | (93 | ) |  |  | 35,944 |
Obligations of states and political subdivisions |  |  | 15,673 |  |  |  | 1,241 |  |  |  | — |  |  |  | 16,914 |
Obligations of U.S. government-sponsored agencies |  |  | 6,360 |  |  |  | 5 |  |  |  | (1 | ) |  |  | 6,364 |
U.S. Treasury securities |  |  | 4,153 |  |  |  | — |  |  |  | (93 | ) |  |  | 4,060 |
Total |  | $ | 202,039 |  |  | $ | 3,306 |  |  | $ | (379 | ) |  | $ | 204,966 |
|  | Held-to-Maturity |
|  | December 31, 2014 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
|  | (Dollars in Thousands) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 10,666 |  |  | $ | 65 |  |  | $ | (2 | ) |  | $ | 10,729 |
Obligations of U.S. government-sponsored agencies |  |  | 17,870 |  |  |  | 19 |  |  |  | (52 | ) |  |  | 17,837 |
Obligations of states and political subdivisions |  |  | 584 |  |  |  | 4 |  |  |  | — |  |  |  | 588 |
Total |  | $ | 29,120 |  |  | $ | 88 |  |  | $ | (54 | ) |  | $ | 29,154 |
Scheduled Maturities of Investment Securities Available-for-Sale and Held-to-Maturity | The scheduled maturities of investment securities available-for-sale and held-to-maturity as of June 30, 2015 are presented in the following table:
|  | Available-for-Sale |  |  | Held-to-Maturity |
|  | Amortized Cost |  |  | Estimated Fair Value |  |  | Amortized Cost |  |  | Estimated Fair Value |
|  | (Dollars in Thousands) |
Maturing within one year |  | $ | 183 |  |  | $ | 185 |  |  | $ | 968 |  |  | $ | 956 |
Maturing after one to five years |  |  | 8,430 |  |  |  | 8,771 |  |  |  | 9,059 |  |  |  | 9,038 |
Maturing after five to ten years |  |  | 118,477 |  |  |  | 118,776 |  |  |  | 33,902 |  |  |  | 33,635 |
Maturing after ten years |  |  | 73,609 |  |  |  | 74,515 |  |  |  | — |  |  |  | — |
Total |  | $ | 200,699 |  |  | $ | 202,247 |  |  | $ | 43,929 |  |  | $ | 43,629 |
Investments' Gross Unrealized Losses and Fair Value | The following table reflects gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of June 30, 2015 and December 31, 2014.
|  | Available-for-Sale |
|  | June 30, 2015 |
|  | Less than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
|  | (Dollars in Thousands) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 80,061 |  |  | $ | (396 | ) |  | $ | 7,014 |  |  | $ | (170 | )
Commercial |  |  | 32,027 |  |  |  | (234 | ) |  |  | — |  |  |  | — |
Corporate notes |  |  | 790 |  |  |  | (1 | ) |  |  | — |  |  |  | — |
Obligations of states and political subdivisions |  |  | 443 |  |  |  | (12 | ) |  |  | — |  |  |  | — |
Total |  | $ | 113,321 |  |  | $ | (643 | ) |  | $ | 7,014 |  |  | $ | (170 | )
|  | Held-to-Maturity |
|  | June 30, 2015 |
|  | Less than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
|  | (Dollars in Thousands) |
Obligations of U.S. government-sponsored agencies |  | $ | 15,269 |  |  | $ | (197 | ) |  | $ | 1,608 |  |  | $ | (38 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  |  | 14,823 |  |  |  | (130 | ) |  |  | — |  |  |  | — |
Obligations of states and political subdivisions |  |  | 574 |  |  |  | (6 | ) |  |  | — |  |  |  | — |
Total |  | $ | 30,666 |  |  | $ | (333 | ) |  | $ | 1,608 |  |  | $ | (38 | )
|  | Available-for-Sale |
|  | December 31, 2014 |
|  | Less than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
|  | (Dollars in Thousands) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 24,459 |  |  | $ | (67 | ) |  | $ | 7,630 |  |  | $ | (125 | )
Commercial |  |  | 19,069 |  |  |  | (70 | ) |  |  | 1,304 |  |  |  | (23 | )
Obligations of U.S. government-sponsored agencies |  |  | 1,999 |  |  |  | (1 | ) |  |  | — |  |  |  | — |
Obligations of states and political subdivisions |  |  | 269 |  |  |  | — |  |  |  | — |  |  |  | — |
U.S. Treasury securities |  |  | 80 |  |  |  | — |  |  |  | 3,980 |  |  |  | (93 | )
Total |  | $ | 45,876 |  |  | $ | (138 | ) |  | $ | 12,914 |  |  | $ | (241 | )
|  | Held-to-Maturity |
|  | December 31, 2014 |
|  | Less than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
|  | (Dollars in Thousands) |
Obligations of U.S. government-sponsored agencies |  | $ | — |  |  | $ | — |  |  | $ | 11,664 |  |  | $ | (52 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  |  | 538 |  |  |  | (2 | ) |  |  | — |  |  |  | — |
Total |  | $ | 538 |  |  | $ | (2 | ) |  | $ | 11,664 |  |  | $ | (52 | )

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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