Expansion of LaPorte, Indiana Operations (Details) - Expansion of LaPorte, Indiana Operations $ in Thousands	12 Months Ended
	Sep. 30, 2016 USD ($)
Costs associated with project
Costs expensed in current period	$ 340
Minimum
Costs associated with project
Estimated costs	2,300
Minimum | Equipment relocation
Costs associated with project
Estimated costs	1,800
Minimum | Other costs
Costs associated with project
Estimated costs	500
Maximum
Costs associated with project
Estimated costs	3,600
Maximum | Equipment relocation
Costs associated with project
Estimated costs	2,500
Maximum | Other costs
Costs associated with project
Estimated costs	$ 1,100