Restatement of Previously Reported Unaudited Interim Consolidated Financial Statements (Unaudited) - Schedule of Operations and Other Comprehensive Income (Loss) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2022	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue	$ 38,765	$ 39,195	$ 33,510	$ 32,473	$ 33,270	$ 31,778	$ 28,773	$ 25,976	$ 65,982	$ 105,178	$ 143,943	$ 119,797	$ 101,310
Operating costs and expenses
Cost of revenue	5,217	5,784	4,451	4,556	3,200	3,410	3,792	4,138
Selling and marketing		11,216	9,206						17,644	28,859	38,841	32,497	27,646
Research and development		8,411	7,095						13,502	21,914	30,192	28,042	22,859
General and administrative		6,591	6,073						12,037	18,628	26,591	22,490	22,284
Amortization and acquisition-related costs		4,493	4,005						6,284	10,777
Restructuring costs		1,807								1,807	1,800	0	(114)
Total operating costs and expenses		38,302	30,830						58,473	96,775	132,604	106,520	92,442
Operating income	2,938	893	2,680	4,828	3,925	5,432	2,383	1,537	7,509	8,403	11,339	13,277	8,868
Interest expense	2,107	2,077	2,040	2,008	1,587	2,223	1,319	0	4,048	6,125	8,232	5,129	0
Other income (expense), net	(369)	89	(225)	135	106	80	372	96	(90)	(2)	(370)	654	541
Income before income taxes		(1,095)	415						3,371	2,276	2,737	8,802	9,409
Income tax benefit (provision)	(773)	880	20	168	(637)	(304)	(417)	534	188	1,068	295	(824)	(1,595)
Net income	$ (311)	$ (215)	$ 435	$ 3,123	$ 1,807	$ 2,985	$ 1,019	$ 2,167	$ 3,559	$ 3,344	$ 3,032	$ 7,978	$ 7,814
Net income per share—basic (in dollars per share)	$ (0.01)	$ (0.00)	$ 0.01	$ 0.07	$ 0.04	$ 0.07	$ 0.02	$ 0.05	$ 0.08	$ 0.07	$ 0.07	$ 0.18	$ 0.19
Net income per share—diluted (in dollars per share)	$ (0.01)	$ 0	$ 0.01	$ 0.07	$ 0.04	$ 0.07	$ 0.02	$ 0.05	$ 0.08	$ 0.07	$ 0.07	$ 0.18	$ 0.18
Shares used in calculating net income per share—basic (in shares)	44,661	44,669	44,775	44,788	44,616	43,773	43,138	42,476	44,795	44,721	44,595	43,509	41,410
Shares used in calculating net income per share—diluted (in shares)	45,311	45,224	46,097	46,155	46,236	45,194	44,554	43,897	46,206	45,793	45,780	45,083	42,533
Other comprehensive income (loss)
Net income	$ (311)	$ (215)	$ 435	$ 3,123	$ 1,807	$ 2,985	$ 1,019	$ 2,167	$ 3,559	$ 3,344	$ 3,032	$ 7,978	$ 7,814
Foreign currency translation adjustment		(13,595)	(1,862)						(3,129)	(16,724)	(27,559)	(455)	3,635
Unrealized gain (loss) on investments		909	(828)						(1,098)	(189)	283	(165)	103
Other comprehensive income (loss)		(12,901)	(2,255)						(668)	(13,569)	(24,244)	7,358	11,552
Software and hardware
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		19,515	18,150						33,595	53,110	72,494	60,069	54,152
Operating costs and expenses
Cost of revenue		508	310						688	1,196
Services and other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		19,680	15,360						32,387	52,068	$ 71,449	$ 59,728	$ 47,158
Operating costs and expenses
Cost of revenue		5,276	4,141						8,318	13,594
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		39,333	34,714						67,186	106,520
Operating costs and expenses
Selling and marketing		11,216	9,206						17,644	28,859
Research and development		9,614	8,236						15,842	25,457
General and administrative		6,589	6,073						12,037	18,626
Amortization and acquisition-related costs		3,283	4,385						6,664	9,947
Restructuring costs		1,807								1,807
Total operating costs and expenses		37,090	31,210						58,853	95,943
Operating income		2,243	3,504						8,333	10,577
Interest expense		2,077	2,040						4,048	6,125
Other income (expense), net		89	(231)						(96)	(8)
Income before income taxes		255	1,233						4,189	4,444
Income tax benefit (provision)		556	(220)						(52)	504
Net income		$ 811	$ 1,013						$ 4,137	$ 4,948
Net income per share—basic (in dollars per share)		$ 0.02	$ 0.02						$ 0.09	$ 0.11
Net income per share—diluted (in dollars per share)		$ 0.02	$ 0.02						$ 0.09	$ 0.11
Shares used in calculating net income per share—basic (in shares)		44,669	44,775						44,795	44,721
Shares used in calculating net income per share—diluted (in shares)		45,224	46,097						46,206	45,793
Other comprehensive income (loss)
Net income		$ 811	$ 1,013						$ 4,137	$ 4,948
Foreign currency translation adjustment		(13,595)	(1,862)						(3,129)	(16,724)
Unrealized gain (loss) on investments		909	(828)						(1,098)	(189)
Other comprehensive income (loss)		(11,875)	(1,677)						(90)	(11,965)
As Previously Reported | Software and hardware
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		19,820	19,280						34,725	54,545
Operating costs and expenses
Cost of revenue		508	310						688	1,196
As Previously Reported | Services and other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		19,513	15,434						32,461	51,975
Operating costs and expenses
Cost of revenue		4,073	3,000						5,978	10,051
Total Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		(138)	(1,204)						(1,204)	(1,342)
Operating costs and expenses
Selling and marketing		0	0						0	0
Research and development		(1,203)	(1,141)						(2,340)	(3,543)
General and administrative		2	0						0	2
Amortization and acquisition-related costs		1,210	(380)						(380)	830
Restructuring costs		0								0
Total operating costs and expenses		1,212	(380)						(380)	832
Operating income		(1,350)	(824)						(824)	(2,174)
Interest expense		0	0						0	0
Other income (expense), net		0	6						6	6
Income before income taxes		(1,350)	(818)						(818)	(2,168)
Income tax benefit (provision)		324	240						240	564
Net income		$ (1,026)	$ (578)						$ (578)	$ (1,604)
Net income per share—basic (in dollars per share)		$ (0.02)	$ (0.01)						$ (0.01)	$ (0.04)
Net income per share—diluted (in dollars per share)		$ (0.02)	$ (0.01)						$ (0.01)	$ (0.04)
Shares used in calculating net income per share—basic (in shares)		0	0						0	0
Shares used in calculating net income per share—diluted (in shares)		0	0						0	0
Other comprehensive income (loss)
Net income		$ (1,026)	$ (578)						$ (578)	$ (1,604)
Foreign currency translation adjustment		0	0						0	0
Unrealized gain (loss) on investments		0	0						0	0
Other comprehensive income (loss)		(1,026)	(578)						(578)	(1,604)
Total Adjustments | Software and hardware
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		(305)	(1,130)						(1,130)	(1,435)
Operating costs and expenses
Cost of revenue		0	0						0	0
Total Adjustments | Services and other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		167	(74)						(74)	93
Operating costs and expenses
Cost of revenue		$ 1,203	$ 1,141						$ 2,340	$ 3,543