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CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member]
--- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2011 | $ 282,799 us-gaap_StockholdersEquity | $ 9,921 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 91,933 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 180,945 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Beginning Balance, (in shares) at Dec. 31, 2011 |  | 14,376,443 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Exercise of stock options | (71)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | (8)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (63)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Exercise of stock options, (in shares) | 15,065 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 15,065 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Income tax benefit from stock compensation | 259 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  | 259 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Net income (loss) | (4,091)us-gaap_NetIncomeLoss |  |  | (4,091)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Vesting of restricted stock | (796)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures | (79)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (717)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Vesting of restricted stock, (in shares) |  | 61,152 gifi_StockIssuedDuringPeriodSharesRestrictedStockUnitsVested / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Compensation expense restricted stock | 1,222 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation | 122 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,100 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Dividends on common stock | (5,822)us-gaap_DividendsCommonStock |  |  | (5,822)us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Ending Balance at Dec. 31, 2012 | 273,500 us-gaap_StockholdersEquity | 9,956 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 92,512 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 171,032 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Ending Balance, (in shares) at Dec. 31, 2012 |  | 14,452,660 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Exercise of stock options | 203 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 20 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 183 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Exercise of stock options, (in shares) | 2,900 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 2,900 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Income tax benefit from stock compensation | 116 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  | 116 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Net income (loss) | 7,232 us-gaap_NetIncomeLoss |  |  | 7,232 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Vesting of restricted stock | (322)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures | (32)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (290)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Vesting of restricted stock, (in shares) |  | 38,188 gifi_StockIssuedDuringPeriodSharesRestrictedStockUnitsVested / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Compensation expense restricted stock | 672 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation | 68 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 604 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Dividends on common stock | (5,839)us-gaap_DividendsCommonStock |  |  | (5,839)us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Ending Balance at Dec. 31, 2013 | 275,562 us-gaap_StockholdersEquity | 10,012 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 93,125 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 172,425 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Ending Balance, (in shares) at Dec. 31, 2013 | 14,493,748 us-gaap_CommonStockSharesOutstanding | 14,493,748 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Net income (loss) | 15,320 us-gaap_NetIncomeLoss |  |  | 15,320 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Vesting of restricted stock | (358)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures | (35)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (323)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Vesting of restricted stock, (in shares) |  | 45,356 gifi_StockIssuedDuringPeriodSharesRestrictedStockUnitsVested / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Compensation expense restricted stock | 1,139 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation | 113 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,026 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Dividends on common stock | (5,865)us-gaap_DividendsCommonStock |  |  | (5,865)us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Ending Balance at Dec. 31, 2014 | $ 285,798 us-gaap_StockholdersEquity | $ 10,090 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 93,828 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 181,880 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Ending Balance, (in shares) at Dec. 31, 2014 | 14,539,104 us-gaap_CommonStockSharesOutstanding | 14,539,104 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |

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