Fair Value Measurements (Details) - USD ($)		1 Months Ended	9 Months Ended	12 Months Ended
	Oct. 05, 2015	Apr. 30, 2019	Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2017		Jan. 22, 2018	Oct. 20, 2017	Nov. 01, 2016
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Change in fair value of contingent consideration				$ 1,190,000	$ 1,377,000	[1]	$ (4,364,000)	[1]
Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value				5,407,000	10,065,000		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				5,407,000	10,065,000
TempAlert | Maximum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			0.00%
Accelerated Concepts | Minimum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			70.00%
Accelerated Concepts | Maximum | Fair Value, Inputs, Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value inputs probability of payment			100.00%
Accelerated Concepts | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Change in fair value of contingent consideration				3,500,000
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			100.00%
Bluenica Corporation | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Change in fair value of contingent consideration				2,200,000	0		$ 500,000
FreshTemp | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Change in fair value of contingent consideration				200,000
Earn-out payments | TempAlert
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Business Combination, Contingent Consideration, Liability				0
Earn-out payments | Accelerated Concepts
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Business Combination, Contingent Consideration, Liability				2,500,000
Change in fair value of contingent consideration		$ 3,500,000
Estimate of Fair Value Measurement [Member] | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value				5,407,000	$ 10,065,000
Estimate of Fair Value Measurement [Member] | 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 [Member] | Accelerated Concepts | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value									$ 2,300,000
Estimate of Fair Value Measurement [Member] | Bluenica Corporation | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value	$ 10,400,000			$ 2,900,000
Estimate of Fair Value Measurement [Member] | FreshTemp | Contingent Consideration | Fair Value, Measurements, Recurring
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration fair value											$ 1,300,000

[1] Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”, which we adopted on October 1, 2018.