Share Repurchase Programs (Detail) - USD ($)	3 Months Ended	9 Months Ended	68 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2020	Aug. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount				$ 50,000,000
Purchase of common stock, shares (in shares)			1,416,587
Common stock repurchased		$ 1,625,000	$ 22,300,000
Program
Equity, Class of Treasury Stock [Line Items]
Purchase of common stock, shares (in shares)	0	50,000
Common stock repurchased		$ 1,600,000