Commitments and Contingencies (Details)		1 Months Ended							12 Months Ended	13 Months Ended
	Jun. 30, 2017 USD ($)	Sep. 30, 2019 USD ($)	Feb. 28, 2019 USD ($)	Jan. 31, 2019 USD ($)	Oct. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2018 USD ($) letter_of_credit	Jun. 30, 2018 USD ($) installment_payment	Apr. 30, 2019 USD ($)	Apr. 30, 2015 USD ($)	Oct. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Number of outstanding letters of credit | letter_of_credit									5
Outstanding letters of credit amount									$ 1,600,000
Asset Purchase Agreement - Alternative Fuel Supply Technology
Loss Contingencies [Line Items]
Payments for commissions						$ 1,200,000	$ 1,200,000		$ 1,000,000
Guinta v. Power Solutions International, Inc. | Subsequent Event
Loss Contingencies [Line Items]
Litigation amount paid			$ 8,500,000
Guinta v. Power Solutions International, Inc. | Forecast
Loss Contingencies [Line Items]
Litigation settlement payment				$ 8,500,000
Eric Cohen vs. The Company | Subsequent Event
Loss Contingencies [Line Items]
Litigation amount paid		$ 3,000,000
Jerome Treadwell v. The Company
Loss Contingencies [Line Items]
Recovery per negligent violation					$ 1,000
Recovery per intentional or reckless violation					$ 5,000
Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI
Loss Contingencies [Line Items]
Range of damages sought	$ 3,000,000
Settlement payments	$ 1,750,000									$ 1,250,000
Number of settlement payments | installment_payment										12
Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI | Compensatory damages | Compensatory damages
Loss Contingencies [Line Items]
Counterclaim damages sought												$ 20,000,000
Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI | Consequential and punitive damages, in excess of | Consequential and punitive damages, in excess of
Loss Contingencies [Line Items]
Counterclaim damages sought												$ 20,000,000
Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI | Tax gross-up payment under the SPA
Loss Contingencies [Line Items]
Damages sought								$ 350,000
Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI | Equity payment due under the SPA
Loss Contingencies [Line Items]
Damages sought								$ 9,300,000
Settled Litigation | Dorvit v. Winemaster | Subsequent Event
Loss Contingencies [Line Items]
Range of damages sought											$ 1,900,000
Minimum | Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI
Loss Contingencies [Line Items]
Range of damages sought													$ 500,000
Maximum | Settled Litigation | Carl Trent, Kenneth Trent, and CKT Holdings, Inc. vs. 3PI and PSI
Loss Contingencies [Line Items]
Range of damages sought													$ 1,000,000