Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid‑in Capital	Retained Deficit	Accumulated Other Comprehensive Loss	Non‑controlling Interest
Common stock issued at the beginning of the period (shares) at Sep. 30, 2016		104,495,000
Stockholders' equity, balance at the beginning of the period at Sep. 30, 2016	$ 203,935	$ 1,045	$ (1,133)	$ 381,223	$ (172,169)	$ (10,671)	$ 5,640
Treasury stock, balance at the beginning of the period (shares) at Sep. 30, 2016			245,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity based compensation expense	2,251			2,251
Issuance of common stock (shares)		864,000
Issuance of common stock	5,521	$ 9		5,512
Stock repurchases (shares)			165,000
Stock repurchases	(1,474)		$ (1,474)
Dividends paid to non‑controlling interest	(4,750)						(4,750)
Net (loss) income	6,410				2,163		4,247
Other comprehensive income	4,682					4,682
Common stock issued at the end of the period (shares) at Sep. 30, 2017		105,359,000
Stockholders' equity, balance at the end of the period at Sep. 30, 2017	216,575	$ 1,054	$ (2,607)	388,986	(170,006)	(5,989)	5,137
Treasury stock, balance at the end of the period (shares) at Sep. 30, 2017			410,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity based compensation expense	15,742			15,742
Issuance of common stock (shares)		8,333,000
Issuance of common stock	137,605	$ 83		137,522
Stock repurchases (shares)			18,000
Stock repurchases	(230)		$ (230)
Dividends paid to non‑controlling interest	(3,725)						(3,725)
Net (loss) income	7,884				6,135		1,749
Other comprehensive income	(3,028)					(3,028)
Shares withheld related to net share settlement (including tax withholdings) (shares)		1,324,000	659,000
Shares withheld related to net share settlement (including tax withholdings)	$ (8,807)	$ 8		(8,815)
Common stock issued at the end of the period (shares) at Sep. 30, 2018	115,016,000	115,016,000
Stockholders' equity, balance at the end of the period at Sep. 30, 2018	$ 362,016	$ 1,145	$ (2,837)	533,435	(163,871)	(9,017)	3,161
Treasury stock, balance at the end of the period (shares) at Sep. 30, 2018	1,087,000		1,087,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity based compensation expense	$ 19,903			19,903
Issuance of common stock (shares)		108,000
Issuance of common stock	363			363
Dividends paid to non‑controlling interest	(1,150)						(1,150)
Net (loss) income	(8,471)				(9,523)		1,052
Other comprehensive income	(3,987)
Shares withheld related to net share settlement (including tax withholdings) (shares)		884,000	577,000
Shares withheld related to net share settlement (including tax withholdings)	(1,270)	$ 9		(1,279)
Cumulative effect of adoption of new accounting standards	$ (1,582)				(1,582)
Common stock issued at the end of the period (shares) at Sep. 30, 2019	116,008,000	116,008,000
Stockholders' equity, balance at the end of the period at Sep. 30, 2019	$ 365,822	$ 1,154	$ (2,837)	$ 552,422	$ (174,976)	$ (13,004)	$ 3,063
Treasury stock, balance at the end of the period (shares) at Sep. 30, 2019	1,664,000		1,664,000