STOCK BASED COMPENSATION (Tables)

12 Months Ended

Aug. 31, 2016

STOCK BASED COMPENSATION [Abstract]

Summary of Shares Authorized and Shares Available for Future Grants

		Shares available to grant
	Shares authorized for issuance as of August 31, 2016	August 31,		August 31,
	(including shares originally authorized for issuance under prior plans)	2016		2015
2013 Plan	944,905		615,889		847,876

Summary of Components of Stock-Based Compensation Expense

	Years Ended August 31,
	2016		2015		2014
Options granted to directors	$	72	$	86	$	91
Restricted stock awards		7,103		4,599		5,326
Restricted stock units		1,946		1,284		1,034
Stock-based compensation expense	$	9,121	$	5,969	$	6,451

Summary of Other Information Related to Stock-Based Compensation

	Balance as of
	August 31,		August 31,		August 31,
	2016		2015		2014
Remaining unrecognized compensation cost (in thousands)	$	32,380	$	18,421	$	21,196
Weighted average period of time over which this cost will be recognized (years)		4		5		6

	Years Ended
	August 31,		August 31,		August 31,
	2016		2015		2014
Excess tax benefit (deficiency) on stock-based compensation (in thousands)	$	610	$	1,206	$	1,489

Summary of Restricted Stock Awards and Units Activity

	Years Ended
	August 31,		August 31,		August 31,
	2016		2015		2014
Grants outstanding at beginning of period		366,021		488,416		623,424
Granted		276,530		36,382		14,828
Forfeited		(1,372)		(10,738)		(2,669)
Vested		(131,299)		(148,039)		(147,167)
Grants outstanding at end of period		509,880		366,021		488,416

Summary of Weighted Average Per Share Grant Date Fair Value for Restricted Stock Awards and Units

	Years Ended
	August 31,		August 31,		August 31,
Weighted Average Grant Date Fair Value	2016		2015		2014
Restricted stock awards and units granted	$	84.69	$	88.40	$	105.76
Restricted stock awards and units vested	$	71.19	$	45.20	$	39.91
Restricted stock awards and units forfeited	$	—	$	65.67	$	54.21

Summary of Total Fair Market Value of Restricted Stock Awards and Units Vested

	Years Ended
	August 31,		August 31,		August 31,
	2016		2015		2014
Total fair market value of restricted stock awards and units vested (in thousands)	$	10,139	$	13,192	$	13,797

Summary of Shares Repurchased

	Years Ended
	August 31,		August 31,		August 31,
	2016		2015		2014
Shares repurchased		43,171		52,396		50,898
Cost of repurchase of shares (in thousands)	$	3,334	$	4,677	$	4,773

Summary of Stock Options Outstanding

	August 31,		August 31,
	2016		2015
Stock options outstanding		16,000		20,000