Summary of Significant Accounting Policies (Tables)

9 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Schedule of supplemental cash flow information

Supplemental cash information and non-cash activities related to operating leases are as follows (in thousands):

	Nine Months Ended
	June 30, 2020
Operating cash outflows from operating leases	$	1,111
Operating lease assets obtained in exchange for new lease liabilities	$	10,791

Schedule of maturities of operating lease liabilities

	Amount
2020	$	1,788
2021		1,830
2022		1,849
2023		1,730
2024		1,719
Thereafter		12,802
Total lease payments		21,718
Less imputed interest		(6,717)
Total	$	15,001

schedule of future minimum lease payments

	Amount
2020	$	988
2021		839
2022		824
2023		853
2024		655
Thereafter		1,350
Total lease payments	$	5,509

Schedule of weighted-average remaining lease term and discount rate

	June 30, 2020
Weighted average remaining lease term (years)	14.7
Weighted average discount rate	6.1	%

Revenue by Major Product Category

	For the three months ended June 30,								For the nine months ended June 30,
			% of				% of				% of				% of
(in thousands)	2020		Revenue		2019		Revenue		2020		Revenue		2019		Revenue
Navigation and Inertial Sensing	$	9,861	36	%		5,604	32	%	$	28,970	38	%		12,157	19	%
Defense Optoelectronics		4,164	16	%		2,514	15	%		11,772	15	%		6,974	11	%
CATV Lasers and Transmitters		10,905	40	%		6,849	40	%		29,070	38	%		32,383	52	%
Chip Devices		1,443	5	%		1,854	11	%		4,033	5	%		9,570	15	%
Other		893	3	%		398	2	%		2,753	4	%		1,881	3	%
Total revenue	$	27,266	100	%	$	17,219	100	%	$	76,598	100	%	$	62,965	100	%