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Loans (Composition of Loans Acquired) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
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Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |
Gross loans | $ 3,046,226 | $ 2,862,534 |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net | 10,557 | 14,606 | $ 17,329
Virginia Savings |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |
Gross loans | 23,714 | 28,914 |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net | 1,700 | 1,707 |
Contractually required principal and interest | 1,895 | 1,965 |
Community |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |
Gross loans | 149,488 | 181,545 |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net | 8,857 | 12,899 |
Contractually required principal and interest | 11,157 | 16,362 |
AFB |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |
Gross loans | 85,120 | 112,862 |
Virginia Savings Bank, Community Financial and American Founders Bank |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |
Gross loans | 258,322 | 323,321 |
Virginia Savings Bank and Community Bank |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net | 10,557 | 14,606 |
Contractually required principal and interest | $ 13,052 | $ 18,327 |

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- Definition Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
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