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Fair Value Measurements (Details) - USD ($) |  | 6 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 05, 2015 | Mar. 31, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | Jan. 22, 2018 | Dec. 31, 2017 | Oct. 20, 2017 | Mar. 31, 2017 | Jan. 09, 2017 | Dec. 31, 2016 | Nov. 01, 2016
Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | $ 8,263,000 | $ 6,388,000 | $ 9,960,000 |  | $ 5,981,000 |  | $ 10,068,000 |  | $ 10,660,000 |
Contingent Consideration | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | 0 | 0 |  |  |  |  |  |  |  |
Contingent Consideration | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | 0 | 0 |  |  |  |  |  |  |  |
Contingent Consideration | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | $ 8,263,000 | 6,388,000 |  |  |  |  |  |  |  |
Bluenica Corporation |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Earn-out payment installment period | 4 years |  |  |  |  |  |  |  |  |  |
Bluenica Corporation | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Payment for contingent consideration |  |  | 0 | $ 500,000 |  |  |  |  |  |  |
Bluenica Corporation | Minimum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 93.50% |  |  |  |  |  |  |  |  |
Bluenica Corporation | Maximum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 98.50% |  |  |  |  |  |  |  |  |
FreshTemp | Minimum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 5.00% |  |  |  |  |  |  |  |  |
FreshTemp | Maximum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 100.00% |  |  |  |  |  |  |  |  |
TempAlert | Maximum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 0.00% |  |  |  |  |  |  |  |  |
SMART Temps | Maximum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 0.00% |  |  |  |  |  |  |  |  |
Accelerated | Minimum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 34.00% |  |  |  |  |  |  |  |  |
Accelerated | Maximum | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fair value inputs probability of payment |  | 53.20% |  |  |  |  |  |  |  |  |
Estimate of Fair Value Measurement | Contingent Consideration | Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | $ 8,263,000 | $ 6,388,000 |  |  |  |  |  |  |  |
Estimate of Fair Value Measurement | Bluenica Corporation | Contingent Consideration | Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value | $ 10,400,000 | 5,700,000 |  |  |  |  |  |  |  |  |
Estimate of Fair Value Measurement | FreshTemp | Contingent Consideration | Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | 300,000 |  |  |  |  |  |  |  |  | $ 1,300,000
Estimate of Fair Value Measurement | TempAlert | Contingent Consideration | Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | 0 |  |  |  |  | $ 0 |  |  |  |
Estimate of Fair Value Measurement | SMART Temps | Contingent Consideration | Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | 0 |  |  |  |  |  |  | $ 10,000 |  |
Estimate of Fair Value Measurement | Accelerated | Contingent Consideration | Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |  |
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value |  | $ 2,300,000 |  |  | $ 2,300,000 |  |  |  |  |  |

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