Fair Value Measurements (Details) - USD ($)		1 Months Ended	12 Months Ended
	Oct. 05, 2015	Nov. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Jan. 22, 2018	Dec. 31, 2017	Oct. 20, 2017	Jun. 30, 2017	Jan. 09, 2017	Nov. 01, 2016
Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value			$ 10,065,000	$ 6,388,000	$ 9,960,000				$ 6,388,000
Contingent Consideration | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value			$ 10,065,000	6,388,000
Accelerated Concepts | Minimum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			44.40%
Accelerated Concepts | Maximum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			100.00%
Bluenica Corporation
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Business Combination, Contingent Liability, Payout Period	4 years
Bluenica Corporation | Maximum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			98.60%
Bluenica Corporation | Contingent Consideration | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Payment for Contingent Consideration Liability, Investing Activities				0	$ 500,000
FreshTemp | Maximum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			100.00%
SMART Temps | Maximum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			0.00%
Estimate of Fair Value Measurement | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value			$ 10,065,000	$ 6,388,000
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 | Accelerated Concepts | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value			4,400,000			$ 2,300,000
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		5,500,000
Estimate of Fair Value Measurement | FreshTemp | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value			$ 200,000								$ 1,300,000
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
Subsequent Event | Estimate of Fair Value Measurement | FreshTemp | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Payment for Contingent Consideration Liability, Investing Activities		$ 200,000