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Subordinated Debt (Details Textual) (USD $)
1 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended
Jul. 17, 2012
Feb. 08, 2008
Feb. 28, 2006
Feb. 28, 2003
Dec. 31, 2014
Dec. 31, 2013
May 28, 2010
Subordinated Borrowing [Line Items]              
Debt Instrument, Interest Rate, Stated Percentage       9.00%us-gaap_DebtInstrumentInterestRateStatedPercentage      
Warrants To Purchase Common Shares     303,030ctib_WarrantsToPurchaseOfCommonShares 163,000ctib_WarrantsToPurchaseOfCommonShares      
Common Stock, Par or Stated Value Per Share     $ 3.30us-gaap_CommonStockParOrStatedValuePerShare $ 4.87us-gaap_CommonStockParOrStatedValuePerShare $ 0us-gaap_CommonStockParOrStatedValuePerShare $ 0us-gaap_CommonStockParOrStatedValuePerShare  
Bank Loan Refinance       $ 880,000ctib_BankLoanRefinance      
Fair Value Of Warrants 703,000ctib_FairValueOfWarrants   443,000ctib_FairValueOfWarrants 460,000ctib_FairValueOfWarrants 525,000ctib_FairValueOfWarrants    
Notes Reduction   794,000us-gaap_NotesReduction          
Notes Payable 5,000,000us-gaap_NotesPayable 4,000us-gaap_NotesPayable         548,000us-gaap_NotesPayable
Notes Bearing Interest Description     five year subordinated notes bearing interest at 2% over the prime rate determined on a quarterly basis        
Warrants Term       5 years      
Various Times From 2003 To 2005 [Member]              
Subordinated Borrowing [Line Items]              
Notes Payable To Bank         814,000us-gaap_NotesPayableToBank
/ us-gaap_StatementScenarioAxis
= ctib_VariousTimesFrom2003To2005Member
   
Subordinated Demand Notes         684,000ctib_SubordinatedDemandNotes
/ us-gaap_StatementScenarioAxis
= ctib_VariousTimesFrom2003To2005Member
   
Percentage Of Interest Bearing On Notes         8.00%ctib_PercentageOfInterestBearingOnNotes
/ us-gaap_StatementScenarioAxis
= ctib_VariousTimesFrom2003To2005Member
   
Subordinated Debt [Member]              
Subordinated Borrowing [Line Items]              
Sale of Stock, Consideration Received on Transaction     $ 1,000,000us-gaap_SaleOfStockConsiderationReceivedOnTransaction
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
$ 1,630,000us-gaap_SaleOfStockConsiderationReceivedOnTransaction
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember