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Fair Value Disclosures; Derivative Instruments (Details 2) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Interest Rate Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivatives not Designated as Hedging Instruments under Statement 133 | Interest Rate Contracts | Interest Rate Contracts
Location of gain Recognized in Income on Derivative | Interest Expense | Interest Expense
Amount of gain Recognized in Income on Derivative | $ 0 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = ctib_InterestRateContractsMember | $ 14,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = ctib_InterestRateContractsMember
Interest on fixed or variable rate variances [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivatives not Designated as Hedging Instruments under Statement 133 | Interest on fixed/variable rate variances | Interest on fixed/variable rate variances
Amount of gain Recognized in Income on Derivative | $ 63,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = ctib_InterestOnFixedOrVariableRateVariancesMember | $ 82,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = ctib_InterestOnFixedOrVariableRateVariancesMember

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Description of the type of derivative instrument identified. For example, swaps, swaptions, forwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579240-113959 + Details
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- Definition Description of where the net gain (loss) on interest rate derivatives not designated as hedging instruments are reported in the statement of income or other statement of financial performance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(7)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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