Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	$ 0	$ 5,900
Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Settled obligation		$ 5,915
Contingent Consideration | Adult Day Health and Cassell
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Settled obligation	$ 6,100