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v2.4.1.9

Stockholders' Equity (Details 3) (Warrant [Member], USD $) | 6 Months Ended | 12 Months Ended
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Jul. 17, 2012 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Warrant [Member] |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |
Weighted average fair value per warrant | $ 5.03 ctib_WeightedAverageFairValueOfWarrants / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | $ 3.76 ctib_WeightedAverageFairValueOfWarrants / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | $ 5.84 ctib_WeightedAverageFairValueOfWarrants / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | $ 4.87 ctib_WeightedAverageFairValueOfWarrants / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Risk-free interest rate | 0.99%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 2.47%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 2.45%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 1.18%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Expected lives | 7 years 6 months | 5 years | 6 years | 7 years
Expected volatility | 36.98%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 44.99%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 37.49%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 28.18%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember

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- Definition Represents the weighted average fair value of the warrant. + References No definition available. + Details
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- Details
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- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Risk-free interest rate assumption used in valuing an instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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