Stock-Based Compensation (Tables)

3 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation Expense

The following table reflects stock-based compensation expense recorded during the three months ended December 31, 2017 and 2016 (in thousands):

	Three Months Ended December 31,
	2017		2016
Restricted stock	$	4,602	$	2,365
Employee stock purchase plan		207		133
Total stock-based compensation expense	$	4,809	$	2,498

Restricted Stock Unit Activity

The following table reflects restricted stock units granted during the three months ended December 31, 2017 and 2016:

		Time-Based		Performance-
	Total Units	Units	Stock Grants	Based Units
Three months ended December 31, 2017	471,151	190,266	546	280,339
Three months ended December 31, 2016	951,266	362,113	815	588,338

The following table summarizes restricted stock unit activity for the three months ended December 31, 2017:

		Weighted
		Average
		Grant-Date
	Shares	Fair Value
Outstanding at September 30, 2017	2,474,011	$	12.34
Granted	471,151		34.25
Vested	(586,352)		12.42
Forfeited	(14,737)		16.48
Outstanding at December 31, 2017	2,344,073	$	16.75