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Fair Value Measurement (Tables)
12 Months Ended
Sep. 30, 2019
Fair Value Disclosures [Abstract]  
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
The changes in the earn-out liability measured at fair value for which the Company has used Level 3 inputs to determine fair value for the year ended September 30, 2019, are as follows (dollars in thousands):
Contingent Consideration
Balance at September 30, 2018$1,300  
Change in fair value of earn-out liability3,500  
Balance at September 30, 2019$4,800