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Comprehensive Income/Loss (Details Textual) (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Dec. 31, 2011
Equity [Abstract]      
Gain on interest rate swaps $ 534,000indb_DeferredGainLossOnCashFlowHedge $ 678,000indb_DeferredGainLossOnCashFlowHedge $ 1,400,000indb_DeferredGainLossOnCashFlowHedge