Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Executive savings plan assets	$ 738	$ 747
Executive savings plan liabilities	(623)	(631)
Contingent consideration	(270)	(680)
Total fair value net asset (liability)	(155)	(564)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Executive savings plan assets	738	747
Executive savings plan liabilities	(623)	(631)
Total fair value net asset (liability)	115	116
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	(270)	(680)
Total fair value net asset (liability)	$ (270)	$ (680)