Revenue Recognition - Summary of Impact of Adopting the New Revenue Standard on Condensed Consolidated Statement of Comprehensive Income (Loss) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Revenues:
Revenues	$ 104,846	$ 95,195	$ 207,283	$ 186,491
Cost of revenues:
Total cost of revenues	44,981	41,175	90,111	81,734
Gross profit	59,865	54,020	117,172	104,757
Operating expenses:
Sales and marketing	22,585	21,441	45,607	40,790
Product development and engineering	16,815	13,938	33,380	27,802
General and administrative	11,904	10,989	25,769	22,826
Amortization of acquisition-related intangible assets	5,253	5,702	10,579	10,890
Total operating expenses	56,557	52,070	115,335	102,308
Income from operations	3,308	1,950	1,837	2,449
Other expense, net	(858)		(1,639)
Income (loss) before income taxes	2,450	(1,407)	198	(5,191)
Benefit (expense) from income taxes	3,519	4,495	4,853	4,038	$ 4,100
Net income (loss)	$ 5,969	$ 3,088	$ 5,051	$ (1,153)
Net income (loss) per share:
Basic	$ 0.15	$ 0.08	$ 0.13	$ (0.03)
Diluted	$ 0.14	$ 0.08	$ 0.12	$ (0.03)
Shares used in computing net income (loss) per share:
Basic	40,635	38,087	40,162	37,908
Diluted	41,739	39,344	41,662	37,908
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available for sale securities	$ 8	$ (3)	$ 6	$ (3)
Unrealized gain (loss) on interest rate hedging transactions	(1,438)	604	(1,111)	369
Minimum pension liability adjustments	(10)	38	(56)	142
Foreign currency translation adjustments	(2,543)	773	(3,910)	2,146
Other comprehensive loss, net of tax:	(3,983)	1,412	(5,071)	2,654
Comprehensive income (loss)	1,986	4,500	(20)	1,501
Subscriptions and Transactions [Member]
Revenues:
Revenues	71,288	63,187	141,056	123,901
Cost of revenues:
Cost of revenue	31,352	27,211	63,021	54,633
Software Licenses [Member]
Revenues:
Revenues	5,665	2,620	10,177	4,985
Cost of revenues:
Cost of revenue	210	229	441	399
Service and Maintenance [Member]
Revenues:
Revenues	26,786	28,433	54,191	55,775
Cost of revenues:
Cost of revenue	12,528	13,034	25,234	25,334
Product and Service, Other [Member]
Revenues:
Revenues	1,107	955	1,859	1,830
Cost of revenues:
Cost of revenue	891	$ 701	1,415	$ 1,368
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues:
Revenues	(875)		(966)
Cost of revenues:
Total cost of revenues	643		1,424
Gross profit	(1,518)		(2,390)
Operating expenses:
Sales and marketing	175		365
Product development and engineering	146		178
Total operating expenses	321		543
Income from operations	(1,839)		(2,933)
Income (loss) before income taxes	(1,839)		(2,933)
Benefit (expense) from income taxes	4,797		5,738
Net income (loss)	$ (6,636)		$ (8,671)
Net income (loss) per share:
Basic	$ (0.17)		$ (0.22)
Diluted	$ (0.16)		$ (0.21)
Shares used in computing net income (loss) per share:
Diluted	(1,104)		(1,500)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	$ 125		$ 185
Other comprehensive loss, net of tax:	125		185
Comprehensive income (loss)	(6,511)		(8,486)
Accounting Standards Update 2014-09 [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues:
Revenues	103,971		206,317
Cost of revenues:
Total cost of revenues	45,624		91,535
Gross profit	58,347		114,782
Operating expenses:
Sales and marketing	22,760		45,972
Product development and engineering	16,961		33,558
General and administrative	11,904		25,769
Amortization of acquisition-related intangible assets	5,253		10,579
Total operating expenses	56,878		115,878
Income from operations	1,469		(1,096)
Other expense, net	(858)		(1,639)
Income (loss) before income taxes	611		(2,735)
Benefit (expense) from income taxes	(1,278)		(885)
Net income (loss)	$ (667)		$ (3,620)
Net income (loss) per share:
Basic	$ (0.02)		$ (0.09)
Diluted	$ (0.02)		$ (0.09)
Shares used in computing net income (loss) per share:
Basic	40,635		40,162
Diluted	40,635		40,162
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available for sale securities	$ 8		$ 6
Unrealized gain (loss) on interest rate hedging transactions	(1,438)		(1,111)
Minimum pension liability adjustments	(10)		(56)
Foreign currency translation adjustments	(2,418)		(3,725)
Other comprehensive loss, net of tax:	(3,858)		(4,886)
Comprehensive income (loss)	(4,525)		(8,506)
Accounting Standards Update 2014-09 [Member] | Subscriptions and Transactions [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues:
Revenues	390		1,226
Cost of revenues:
Cost of revenue	263		649
Accounting Standards Update 2014-09 [Member] | Subscriptions and Transactions [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues:
Revenues	71,678		142,282
Cost of revenues:
Cost of revenue	31,615		63,670
Accounting Standards Update 2014-09 [Member] | Software Licenses [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues:
Revenues	(1,742)		(3,382)
Cost of revenues:
Cost of revenue	2		2
Accounting Standards Update 2014-09 [Member] | Software Licenses [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues:
Revenues	3,923		6,795
Cost of revenues:
Cost of revenue	212		443
Accounting Standards Update 2014-09 [Member] | Service and Maintenance [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues:
Revenues	514		1,227
Cost of revenues:
Cost of revenue	408		801
Accounting Standards Update 2014-09 [Member] | Service and Maintenance [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues:
Revenues	27,300		55,418
Cost of revenues:
Cost of revenue	12,936		26,035
Accounting Standards Update 2014-09 [Member] | Product and Service, Other [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues:
Revenues	(37)		(37)
Cost of revenues:
Cost of revenue	(30)		(28)
Accounting Standards Update 2014-09 [Member] | Product and Service, Other [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues:
Revenues	1,070		1,822
Cost of revenues:
Cost of revenue	$ 861		$ 1,387