Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 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)
January 1, 2020 to January 31, 2020		33,664	$	8.30		33,664	$	2,119
February 1, 2020 to February 29, 2020		—				—		2,119
March 1, 2020 to March 31, 2020		113,010		8.19		113,010		1,194
Total		146,674

Schedule of inventories

	March 31, 2020		December 31, 2019
	(in thousands)
Raw materials	$	468	$	468
Work-in-process		816		901
Finished goods		578		809
	$	1,862	$	2,178

Schedule of property and equipment

	March 31, 2020			December 31, 2019
	(in thousands)
Machinery, equipment and tooling	$	3,341		$	3,341
Buildings		1,711			1,711
Information systems		835			835
Land and land improvements		594			594
Furniture and fixtures		8			8
Total cost		6,489			6,489
Accumulated depreciation and amortization		(3,884	)		(3,842	)
Property and equipment, net	$	2,605		$	2,647