Supporting Financial Information - Goodwill and Intangibles (Details) $ in Thousands	5 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 1,100	$ 1,000
Document Period End Date		Sep. 30, 2016
Goodwill
Goodwill, Gross	34,745	$ 34,745
Goodwill	34,745	34,745
Intangible Assets
Gross Balance, Total	43,362	43,362
Accumulated amortization	(1,058)	(1,058)
Net balance	7,559	7,559
Net Balance, Total	42,304	42,304
Estimated amortization expense for future years
Year 1	2,375	2,375
Year 2	2,142	2,142
Year 3	1,519	1,519
Year 4	825	825
Year 5	152	152
Thereafter	546	546
Net balance	7,559	7,559
Customer Relationships
Intangible Assets
Gross Balance	7,247	7,247
Accumulated amortization	(993)	(993)
Net balance	6,254	6,254
Estimated amortization expense for future years
Net balance	6,254	6,254
Non Compete
Intangible Assets
Gross Balance	1,370	1,370
Accumulated amortization	(65)	(65)
Net balance	1,305	1,305
Estimated amortization expense for future years
Net balance	$ 1,305	$ 1,305
Maximum
Intangible Assets
Amortization period		9 years
Minimum
Intangible Assets
Amortization period		4 years