Stock Benefit Plans - Schedule of Share Based Compensation Options Outstanding and Exercisable By Price Range (Detail) - $ / shares	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	1,596,853	2,411,722	3,513,963
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 2 months 5 days	3 years 7 months 21 days	4 years 2 months 5 days
Options Outstanding, Weighted Average Exercise Price	$ 5.25	$ 5.44	$ 5.65
$3.40 - $3.40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	3.40
Weighted Average Exercise Price, Upper	$ 3.40
Options Outstanding, Number of Shares	50,000
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 7 months 2 days
Options Outstanding, Weighted Average Exercise Price	$ 3.40
Options Exercisable, Number of Shares	41,666
Options Exercisable, Weighted Average Exercise Price	$ 3.40
$3.59 - $3.59 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	3.59
Weighted Average Exercise Price, Upper	$ 3.59
Options Outstanding, Number of Shares	354,167
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 5 months 1 day
Options Outstanding, Weighted Average Exercise Price	$ 3.59
Options Exercisable, Number of Shares	306,771
Options Exercisable, Weighted Average Exercise Price	$ 3.59
$3.63 - $3.63 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	3.63
Weighted Average Exercise Price, Upper	$ 3.63
Options Outstanding, Number of Shares	326,149
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 29 days
Options Outstanding, Weighted Average Exercise Price	$ 3.63
Options Exercisable, Number of Shares	303,544
Options Exercisable, Weighted Average Exercise Price	$ 3.63
$3.91 - $3.91 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	3.91
Weighted Average Exercise Price, Upper	$ 3.91
Options Outstanding, Number of Shares	75,000
Options Outstanding, Weighted Average Remaining Contractual Term	1 year 4 months 2 days
Options Outstanding, Weighted Average Exercise Price	$ 3.91
Options Exercisable, Number of Shares	75,000
Options Exercisable, Weighted Average Exercise Price	$ 3.91
$4.01 - $4.01 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	4.01
Weighted Average Exercise Price, Upper	$ 4.01
Options Outstanding, Number of Shares	313,770
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 11 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 4.01
Options Exercisable, Number of Shares	155,956
Options Exercisable, Weighted Average Exercise Price	$ 4.01
$4.31- $5.65 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	4.31
Weighted Average Exercise Price, Upper	$ 5.65
Options Outstanding, Number of Shares	165,066
Options Outstanding, Weighted Average Remaining Contractual Term	1 year 10 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 4.90
Options Exercisable, Number of Shares	154,649
Options Exercisable, Weighted Average Exercise Price	$ 4.93
$5.80 - $9.55 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	5.80
Weighted Average Exercise Price, Upper	$ 9.55
Options Outstanding, Number of Shares	160,419
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 29 days
Options Outstanding, Weighted Average Exercise Price	$ 7.69
Options Exercisable, Number of Shares	116,668
Options Exercisable, Weighted Average Exercise Price	$ 7.16
$10.75 - $15.64 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	10.75
Weighted Average Exercise Price, Upper	$ 15.64
Options Outstanding, Number of Shares	145,294
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 5 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 14.10
Options Exercisable, Number of Shares	99,309
Options Exercisable, Weighted Average Exercise Price	$ 14.76
$15.72 - $15.72 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	15.72
Weighted Average Exercise Price, Upper	$ 15.72
Options Outstanding, Number of Shares	2,389
Options Outstanding, Weighted Average Remaining Contractual Term	5 years 10 months 13 days
Options Outstanding, Weighted Average Exercise Price	$ 15.72
Options Exercisable, Number of Shares	2,389
Options Exercisable, Weighted Average Exercise Price	$ 15.72
$18.35 - $18.35 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	18.35
Weighted Average Exercise Price, Upper	$ 18.35
Options Outstanding, Number of Shares	4,599
Options Outstanding, Weighted Average Remaining Contractual Term	5 years 6 months 25 days
Options Outstanding, Weighted Average Exercise Price	$ 18.35
Options Exercisable, Number of Shares	1,618
Options Exercisable, Weighted Average Exercise Price	$ 18.35
$3.40 - $18.35 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Exercise Price, Lower	3.40
Weighted Average Exercise Price, Upper	$ 18.35
Options Outstanding, Number of Shares	1,596,853
Options Outstanding, Weighted Average Remaining Contractual Term	3 years 2 months 4 days
Options Outstanding, Weighted Average Exercise Price	$ 5.25
Options Exercisable, Number of Shares	1,257,570
Options Exercisable, Weighted Average Exercise Price	$ 5.08