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SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of weighted average shares outstanding (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Schedule Of Earnings Per Share, Basic and Diluted, By Common Class, Including Two Class Method [Line Items] |  |  |
Net income available for stockholders: | $ 8,914 us-gaap_NetIncomeLoss | $ 7,528 us-gaap_NetIncomeLoss | $ 6,979 us-gaap_NetIncomeLoss
Less: Dividends paid |  |  |
Undistributed earnings (loss) | 2,812 us-gaap_UndistributedEarnings | 1,823 us-gaap_UndistributedEarnings | (16,833)us-gaap_UndistributedEarnings
Basic shares outstanding: |  |  |
Basic shares outstanding (in shares) | 36,937 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 36,820 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 36,656 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted shares outstanding: |  |  |
Basic shares outstanding (in shares) | 36,937 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 36,820 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 36,656 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted shares outstanding (in shares) | 37,228 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 37,144 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 36,804 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic earnings per share: |  |  |
Basic earnings per share (in dollars per share) | $ 0.24 us-gaap_EarningsPerShareBasic | $ 0.20 us-gaap_EarningsPerShareBasic | $ 0.19 us-gaap_EarningsPerShareBasic
Diluted earnings per share: |  |  |
Diluted earnings per share (in dollars per share) | $ 0.24 us-gaap_EarningsPerShareDiluted | $ 0.20 us-gaap_EarningsPerShareDiluted | $ 0.19 us-gaap_EarningsPerShareDiluted
Common Stock |  |  |
Schedule Of Earnings Per Share, Basic and Diluted, By Common Class, Including Two Class Method [Line Items] |  |  |
Net income available for stockholders: |  |  |
Less: Dividends paid |  |  |
Dividends paid | (5,911)us-gaap_Dividends / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (5,525)us-gaap_Dividends / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (23,135)us-gaap_Dividends / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Undistributed earnings (loss) | 2,720 us-gaap_UndistributedEarnings / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,762 us-gaap_UndistributedEarnings / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (16,329)us-gaap_UndistributedEarnings / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Basic shares outstanding: |  |  |
Basic shares outstanding (in shares) | 35,691 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,556 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,530 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Diluted shares outstanding: |  |  |
Basic shares outstanding (in shares) | 35,691 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,556 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,530 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Dilutive effect of options (in shares) | 291 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 324 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 148 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Diluted shares outstanding (in shares) | 35,982 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,880 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,678 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Basic earnings per share: |  |  |
Distributed earnings (in dollars per share) | $ 0.16 us-gaap_EarningsPerShareBasicDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.15 us-gaap_EarningsPerShareBasicDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.65 us-gaap_EarningsPerShareBasicDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Undistributed earnings (loss) (in dollars per share) | $ 0.08 us-gaap_EarningsPerShareBasicUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.05 us-gaap_EarningsPerShareBasicUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ (0.46)us-gaap_EarningsPerShareBasicUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Basic earnings per share (in dollars per share) | $ 0.24 us-gaap_EarningsPerShareBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.20 us-gaap_EarningsPerShareBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.19 us-gaap_EarningsPerShareBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Diluted earnings per share: |  |  |
Distributed earnings (in dollars per share) | $ 0.16 us-gaap_EarningsPerShareDilutedDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.15 us-gaap_EarningsPerShareDilutedDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.65 us-gaap_EarningsPerShareDilutedDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Undistributed earnings (loss) (in dollars per share) | $ 0.08 us-gaap_EarningsPerShareDilutedUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.05 us-gaap_EarningsPerShareDilutedUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ (0.46)us-gaap_EarningsPerShareDilutedUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Diluted earnings per share (in dollars per share) | $ 0.24 us-gaap_EarningsPerShareDiluted / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.20 us-gaap_EarningsPerShareDiluted / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 0.19 us-gaap_EarningsPerShareDiluted / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Restricted shares of common stock |  |  |
Less: Dividends paid |  |  |
Dividends paid | (191)us-gaap_Dividends / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | (180)us-gaap_Dividends / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | (677)us-gaap_Dividends / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Undistributed earnings (loss) | $ 92 us-gaap_UndistributedEarnings / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ 61 us-gaap_UndistributedEarnings / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ (504)us-gaap_UndistributedEarnings / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Basic shares outstanding: |  |  |
Basic shares outstanding (in shares) | 1,246 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | 1,264 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | 1,126 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Diluted shares outstanding: |  |  |
Basic shares outstanding (in shares) | 1,246 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | 1,264 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | 1,126 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Diluted shares outstanding (in shares) | 1,246 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | 1,264 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | 1,126 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Basic earnings per share: |  |  |
Distributed earnings (in dollars per share) | $ 0.15 us-gaap_EarningsPerShareBasicDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ 0.14 us-gaap_EarningsPerShareBasicDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ 0.60 us-gaap_EarningsPerShareBasicDistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Undistributed earnings (loss) (in dollars per share) | $ 0.08 us-gaap_EarningsPerShareBasicUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ 0.05 us-gaap_EarningsPerShareBasicUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ (0.45)us-gaap_EarningsPerShareBasicUndistributed / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember
Basic earnings per share (in dollars per share) | $ 0.23 us-gaap_EarningsPerShareBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ 0.19 us-gaap_EarningsPerShareBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember | $ 0.15 us-gaap_EarningsPerShareBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RestrictedStockMember

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- Definition Dividends declared in the period and the contractual amount of dividends (or interest on participating income bonds) that must be paid per security, taking into account all dilutive potential common shares outstanding during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -URI http://asc.fasb.org/extlink&oid=7655603&loc=SL5780133-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60A -URI http://asc.fasb.org/extlink&oid=7655603&loc=SL5780132-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2740-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 66 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2814-109256 + Details
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