Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Schedule of share repurchase activity

Periods	Total number of shares purchased		Average price paid per share		Total number of shares purchased as part of publicly announced program		Approximate dollar value of shares that may yet be purchased under the program (in thousands)
April 1, 2020 to April 30, 2020		69,336	$	7.98		69,336	$	640
May 1, 2020 to May 31, 2020		9,805		8.05		9,805		561
June 1, 2020 to June 30, 2020		3,963		7.67		3,963		531
Total		83,104

Schedule of inventories

	June 30, 2020		December 31, 2019
	(in thousands)
Raw materials	$	468	$	468
Work-in-process		758		901
Finished goods		478		809
	$	1,704	$	2,178

Schedule of property and equipment

	June 30, 2020			December 31, 2019
	(in thousands)
Machinery, equipment and tooling	$	3,343		$	3,341
Buildings		1,711			1,711
Information systems		835			835
Land and land improvements		594			594
Furniture and fixtures		8			8
Total cost		6,491			6,489
Accumulated depreciation and amortization		(3,925	)		(3,842	)
Property and equipment, net	$	2,566		$	2,647