Star Equity (STRR) 10-Q 15 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2020	May 08, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2020
Entity File Number	001-35947
Entity Registrant Name	DIGIRAD CORP
Entity Central Index Key	0000707388
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	33-0145723
Entity Address, Address Line One	1048 Industrial Court,
Entity Address, City or Town	Suwanee
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30024
City Area Code	858
Local Phone Number	726-1600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Outstanding (in shares)		2,055,158
Common Stock, par value $0.0001 per share
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	DRAD
Security Exchange Name	NASDAQ
Series A Cumulative Perpetual Preferred Stock, par value $0.0001 per share
Entity Information [Line Items]
Title of 12(b) Security	Series A Cumulative Perpetual Preferred Stock, par value $0.0001 per share
Trading Symbol	DRADP
Security Exchange Name	NASDAQ

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues	$ 28,857	$ 23,912
Cost of revenues:
Cost of revenues	24,416	19,931
Gross profit	4,441	3,981
Operating expenses:
Marketing, sales and general and administrative expenses	6,228	4,833
Amortization of intangible assets	817	283
Total operating expenses	7,045	5,116
Loss from operations	(2,604)	(1,135)
Other expense:
Other income (expense), net	160	(198)
Interest expense, net	(475)	(181)
Loss on extinguishment of debt	0	(151)
Total other expense	(315)	(530)
Loss before income taxes	(2,919)	(1,665)
Income tax (expense) benefit	(34)	8
Net loss	(2,953)	(1,657)
Deemed dividend on Series A redeemable preferred stock	(484)	0
Net loss attributable to common shareholders	$ (3,437)	$ (1,657)
Net (loss) income per share—basic and diluted
Basic and diluted (in usd per share)	$ (1.67)	$ (0.82)
Other comprehensive (loss) income:
Reclassification of tax provision impact	$ 0	$ 22
Total other comprehensive income	0	22
Comprehensive loss	(2,953)	(1,635)
Healthcare
Revenues:
Revenues	23,342	23,912
Cost of revenues:
Cost of revenues	19,270	19,931
Building and Construction
Revenues:
Revenues	5,484	0
Cost of revenues:
Cost of revenues	5,081	0
Real Estate and Investments
Revenues:
Revenues	31	0
Cost of revenues:
Cost of revenues	$ 65	$ 0

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,423	$ 1,821
Restricted cash	169	240
Equity securities	18	26
Accounts receivable, net	14,933	18,571
Inventories, net	6,617	7,097
Other current assets	1,416	1,794
Total current assets	24,576	29,549
Property and equipment, net	20,762	22,138
Operating lease right-of-use assets, net	5,310	4,827
Intangible assets, net	22,087	22,903
Goodwill	9,978	9,978
Other assets	1,094	1,165
Total assets	83,807	90,560
Current liabilities:
Accounts payable	7,623	8,932
Accrued compensation	3,456	4,579
Accrued warranty	347	421
Deferred revenue	1,626	1,786
Short-term debt and current portion of long-term debt	1,211	4,036
Payable to related parties	2,034	1,920
Operating lease liabilities	2,009	1,866
Other current liabilities	4,067	4,638
Total current liabilities	22,373	28,178
Long-term debt, net of current portion	18,775	17,038
Deferred tax liabilities	43	23
Operating lease liabilities, net of current portion	3,404	3,073
Other liabilities	1,359	1,551
Total liabilities	45,954	49,863
Commitments and contingencies (Note 9)
Preferred stock, $0.0001 par value: 10,000,000 shares authorized: 10% Series A Cumulative Redeemable preferred stock, 8,000,000 shares liquidation preference ($10.00 per share), 1,915,637 shares issued or outstanding at March 31, 2020 and December 31, 2019, respectively	20,086	19,602
Stockholders’ equity:
Common stock, $0.0001 par value: 30,000,000 shares authorized; 2,055,158 and 2,050,659 shares issued and outstanding (net of treasury shares) at March 31, 2020 and December 31, 2019, respectively	0	0
Treasury stock, at cost; 258,849 shares at March 31, 2020 and December 31, 2019, respectively	(5,728)	(5,728)
Additional paid-in capital	144,977	145,352
Accumulated deficit	(121,482)	(118,529)
Total stockholders’ equity	17,767	21,095
Total liabilities, mezzanine equity and stockholders’ equity	$ 83,807	$ 90,560

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)	3 Months Ended
	Mar. 31, 2020$ / sharesshares	Dec. 31, 2019$ / sharesshares
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)	10,000,000
Preferred Stock, dividend rate	0.10
Preferred stock, liquidation preference (in shares)	8,000,000
Preferred stock, liquidation preference per share (USD per share) | $ / shares	$ 10
Preferred stock, shares issued (in shares)	1,915,637
Preferred stock, shares outstanding (in shares)	1,915,637
Common stock, par value (in usd per share) | $ / shares	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	30,000,000	30,000,000
Common stock, issued (in shares)	2,055,158	2,050,659
Common stock, outstanding (in shares)	2,055,158	2,050,659
Treasury stock (in shares)	258,849	258,849

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net loss	$ (2,953)	$ (1,657)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,593	1,526
Amortization of intangible assets	814	283
Provision for bad debt	32	75
Stock-based compensation	109	112
Amortization of loan issuance costs	31	8
Debt issuance costs written-off	0	151
Loss (gain) on sale of assets	180	(42)
Deferred income taxes	20	(16)
Other, net	26	(28)
Changes in operating assets and liabilities:
Accounts receivable	3,606	(794)
Inventories	481	8
Other assets	154	(454)
Accounts payable	(1,525)	(664)
Accrued compensation	(1,123)	(616)
Deferred revenue	(166)	(273)
Operating lease liabilities	(2)	(11)
Other liabilities	(654)	207
Net cash provided by (used in) operating activities	623	(2,185)
Investing activities
Purchases of property and equipment	(158)	(387)
Proceeds from sale of property and equipment	23	257
Proceeds from sales of equity securities	0	140
Payments to acquire interest in joint ventures	0	(1,000)
Net cash used in investing activities	(135)	(990)
Financing activities
Proceeds from borrowings	31,996	23,517
Repayment of debt	(32,407)	(20,500)
Loan issuance costs	(317)	(381)
Taxes paid related to net share settlement of equity awards	0	(24)
Repayment of obligations under finance leases	(229)	(184)
Net cash (used in) provided by financing activities	(957)	2,428
Net decrease in cash, cash equivalents, and restricted cash	(469)	(747)
Cash, cash equivalents, and restricted cash at beginning of period	2,061	1,813
Cash, cash equivalents, and restricted cash at end of period	$ 1,592	$ 1,066

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Redeemable Preferred Stock	Common stock	Treasury Stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2018			2,025,000
Beginning balance at Dec. 31, 2018	$ 25,800			$ (5,728)	$ 145,430	$ (22)	$ (113,880)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	112				112
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)			6,000
Shares issued under stock incentive plans, net of shares withheld for employee taxes	(24)				(24)
Reclassification of unrealized gains on equity securities to retained earnings	22					22
Net loss	(1,657)						(1,657)
Ending balance (in shares) at Mar. 31, 2019			2,031,000
Ending balance at Mar. 31, 2019	24,253		$ 0	(5,728)	145,518	0	(115,537)
Redeemable Preferred stock, beginning balance (in shares) at Dec. 31, 2019		1,916,000
Redeemable Preferred stock, beginning balance at Dec. 31, 2019	$ 19,602	$ 19,602
Beginning balance (in shares) at Dec. 31, 2019	2,050,659		2,050,000
Beginning balance at Dec. 31, 2019	$ 21,095		$ 0	(5,728)	145,352	0	(118,529)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	109				109
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)			5,000
Accrued dividend on redeemable preferred stock	(484)	$ 484
Net loss	$ (2,953)						(2,953)
Redeemable Preferred stock, ending balance (in shares) at Mar. 31, 2020	1,915,637	1,916,000
Redeemable Preferred stock,ending balance at Mar. 31, 2020	$ 20,086	$ 20,086
Ending balance (in shares) at Mar. 31, 2020	2,055,158		2,055,000
Ending balance at Mar. 31, 2020	$ 17,767		$ 0	$ (5,728)	$ 144,977	$ 0	$ (121,482)

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Basis of Presentation The unaudited condensed consolidated financial statements included in this Form 10-Q have been prepared in accordance with the U.S. Securities and Exchange Commission (the “SEC”) instructions for Quarterly Reports on Form 10-Q. Accordingly, the condensed consolidated financial statements are unaudited and do not contain all the information required by U.S. generally accepted accounting principles (“GAAP”) to be included in a full set of financial statements. The unaudited condensed consolidated balance sheet at December 31, 2019 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for a complete set of financial statements. The audited consolidated financial statements for our fiscal year ended December 31, 2019, filed with the SEC on Form 10-K on March 9, 2020, include a summary of our significant accounting policies and should be read in conjunction with this Form 10-Q. In the opinion of management, all material adjustments necessary to present fairly the results of operations, cash flows, and balance sheets for such periods have been included in this Form 10-Q. All such adjustments are of a normal recurring nature. The results of operations for interim periods are not necessarily indicative of the results of operations for the entire year. On March 11, 2020, the World Health Organization declared the outbreak of a novel strain of coronavirus, COVID-19, a global pandemic, which continues to spread throughout the United States and around the world. Governmental authorities in the states in which we operate issued social distancing orders, which orders have required businesses in subject jurisdictions to cease non-essential operations at physical locations in those locations, unless exempted, rescinded, or amended. Accordingly, to comply with applicable regulations and to safeguard the health and safety of our employees and customers, we have temporarily reduced our business operations. On April 1, 2020, we also announced that in response to the COVID-19 pandemic, we planned to furlough certain employees (without pay, but with our payment of health insurance) and that we would institute a 20% salary reduction for most of our salaried employees and reduce the number of working hours of most of our hourly employees by 20%. These reductions, which apply to our healthcare division, were effective as of April 6, 2020, and remained in effect until May 15, 2020, subject to extension or adjustment developments surrounding the COVID-19 pandemic. Throughout the COVID-19 pandemic, our building and construction division has furloughed employees or reduced employee hours based on fluctuations in demand for our products. This partial disruption, although expected to be temporary, may impact our operations and overall business. The impact of COVID-19 is evolving rapidly and its future effects are uncertain. Given the uncertainty of the situation, the duration of the disruption and related financial impact cannot be reasonably estimated at this time. We will continue to evaluate the impact of the COVID-19 pandemic on our business as we learn more and the impact of COVID-19 on our industry becomes clearer. See Note 14, Subsequent event, for further discussion. Reverse Stock Split On May 31, 2019, the Company filed a Certificate of Amendment to its Restated Certificate of Incorporation (the “Amendment”) in order to effect a reverse stock split of the issued and outstanding shares of its common stock at a ratio of 1-for-10 (the “Reverse Stock Split”) and to reduce of the number of authorized shares of common stock to 30 million shares authorized (the “Share Reduction”). The Reverse Stock Split was implemented for the purpose of regaining compliance with the minimum bid price requirement for continued listing of the Company’s common stock on the Nasdaq Global Market. The Reverse Stock Split and the Share Reduction became effective on June 4, 2019, at which time (a) every ten shares of the Company’s issued and outstanding common stock were automatically combined into one issued and outstanding share of common stock and (b) the number of authorized shares of common stock under the Company’s Restated Certificate of Incorporation, as amended, was automatically reduced to 30 million shares authorized. No fractional shares were issued in connection with the Reverse Stock Split. Instead, the Company issued one full share of the post-Reverse Stock Split common stock to any stockholder who would have been entitled to receive a fractional share as a result of the Reverse Stock Split. The Amendment did not affect the par value of the Company’s common stock. The Company’s common stock began trading on a split-adjusted basis on June 5, 2019. The Amendment, effecting the Reverse Stock Split and the Share Reduction, was approved by the stockholders of the Company at the Company’s 2019 Annual Meeting of Stockholders held on May 1, 2019. In connection with approving the Reverse Stock Split, the Company’s stockholders granted authority to the Company’s board of directors to determine, at its discretion, a ratio within the range of 1-for-5 to 1-for-10, at which to effectuate the Reverse Stock Split. The Reverse Stock Split was approved by the Company’s board of directors on March 8, 2019, and the ratio of 1-for-10 was approved by the Company’s board of directors on May 15, 2019. The terms of equity awards under the Company’s incentive plans, including the per share exercise price of options and the number of shares issuable under outstanding awards, were converted on the effective date of the Reverse Stock Split in proportion to the reverse split ratio (subject to adjustment for fractional interests). In addition, the total number of shares of common stock that may be the subject of future grants under the Company’s incentive plans were adjusted and proportionately decreased as a result of the Reverse Stock Split. All authorized, issued, and outstanding stock and per share amounts contained in the accompanying condensed consolidated financial statements have been adjusted to reflect the 1-for-10 Reverse Stock Split for all prior periods presented. The Reverse Stock Split was effective June 4, 2019. ATRM Merger On September 10, 2019, Digirad completed its acquisition of ATRM Holdings, Inc. (“ATRM”) pursuant to an Agreement and Plan of Merger, dated as of July 3, 2019 (the “ATRM Merger Agreement”), among Digirad, Digirad Acquisition Corporation, a Minnesota corporation and wholly-owned subsidiary of Digirad (“Merger Sub”), and ATRM. Under the terms of the ATRM Merger Agreement, Merger Sub merged with and into ATRM, with ATRM surviving as a wholly owned subsidiary of Digirad (the “ATRM Merger” or the “ATRM Acquisition”). At the effective time of the ATRM Merger, (i) each share of ATRM common stock was converted into the right to receive three one-hundredths (0.03) of a share of 10.0% Series A Cumulative Perpetual Preferred Stock, par value $0.0001 per share, of the Company (“Company Preferred Stock”) and (ii) each share of ATRM 10.00% Series B Cumulative Preferred Stock, par value $0.001 per share (“ATRM Preferred Stock”), converted into the right to receive two and one-half (2.5) shares of Company Preferred Stock, for an approximate aggregate total of 1.6 million shares of Company Preferred Stock. No fractional shares of Company Preferred Stock were issued to any ATRM shareholder in the ATRM Merger. Each ATRM shareholder who would otherwise have been entitled to receive a fraction of a share of Company common stock in the ATRM Merger received one whole share of Company Preferred Stock. See Note 4, Merger , within the notes to our unaudited condensed consolidated financial statements for further detail. Mezzanine Equity Pursuant to the Certificate of Designations, Rights and Preferences of 10% Series A Cumulative Perpetual Preferred Stock of Digirad Corporation (the “Certificate of Designations”), upon a Change of Control Triggering Event, as defined in the Certificate of Designations, holders of the Company Preferred Stock may require the Company to redeem the Company Preferred Stock at a price of $10.00 per share, plus any accumulated and unpaid dividends (a “Change of Control Redemption”). As this redemption feature of the shares is not solely within the control of Digirad, the equity of Digirad does not qualify as permanent equity and has been classified as mezzanine or temporary equity. Accordingly, the Company recognizes Company Preferred Stock as mezzanine equity in the unaudited condensed consolidated financial statements. Company Preferred Stock is not redeemable and it was not probable that the Company Preferred Stock would become redeemable as of March 31, 2020. In addition to a Change of Control Redemption, the Certificate of Designations also provides that the Company may redeem (at its option, in whole or in part) the Company Preferred Stock following the fifth anniversary of issuance of the Company Preferred Stock, at a cash redemption price of $10.00 per share, plus any accumulated and unpaid dividends. Liquidity The accompanying financial statements have been prepared assuming we will continue as a going concern, which contemplates the realization of assets and settlement of obligations in the normal course of business. We incurred net losses from operations of approximately $2.6 million and $1.1 million for the three months ended March 31, 2020 and 2019, respectively. We have an accumulated deficit of $121.5 million and $118.5 million as of March 31, 2020 and 2019, respectively. However, we were able to generate positive cash flow from operations of $0.6 million for the three months ended March 31, 2020 compared to a negative cash flow from operations of $2.2 million for the same prior year period in 2019. As of March 31, 2020, we had approximately $1.2 million in third party credit facilities and $2.0 million in related party notes coming due in the current business cycle. As noted below, we have a covenant breach with Gerber. In January 2020, as discussed more fully below, we refinanced our debt with Gerber and Premier and reset the debt covenants with these lenders. The operating losses resulted predominantly from our Building and Construction division. As a part of the ATRM Merger, ATRM has restructured operations to focus more on higher value added properties and larger commercial projects with the goal of increasing sales prices and increasing margins. Should the Company not be able to increase sales and profit margins in the Building and Construction division, the Company may require additional support. To this end, a significant shareholder and lender has committed to provide financial support to the Company by providing written assurances that he will (a) not call approximately $2.0 million of related party debt when it becomes due in October 2020; and (b) extend through June 2021 the Company’s put option with this shareholder of $1.0 million in Series A Cumulative Perpetual Preferred stock. Management believes that the Company has the liquidity and operations to continue to support the business through the next 12 months from the issuance of this Quarterly Report. The Company’s ability to continue as a going concern is dependent on its ability to execute its plans. Use of Estimates Preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ from management’s estimates. Leases Lessee Accounting We determine if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, operating lease liabilities, and operating lease liabilities, net of current portion in our condensed consolidated balance sheets. Finance leases are included in property and equipment, other current liabilities, and other long-term liabilities in our condensed consolidated balance sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We use the implicit discount rate when readily determinable; however, as most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease valuation may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company elected to not separate lease and non-lease components of its operating leases in which it is the lessee and lessor. Additionally, The Company elected not to recognize right-of use assets and leases liabilities that arise from short-term leases of twelve months or less. Lessor Accounting We determine lease classification at the commencement date. Leases not classified as sales-type or direct financing leases are classified as operating leases. The primary accounting criteria we use for lease classification are (a) review to determine if the lease transfers ownership of the underlying asset to the lessee by the end of the lease term, (b) review to determine if the lease grants the lessee a purchase option that the lessee is reasonably certain to exercise, (c) determine, using a seventy-five percent or more threshold, if the lease term is for a major part of the remaining economic life of the underlying asset (however, we do not use this classification criterion when the lease commencement date falls within the last 25 percent of the total economic life of the underlying asset) and (d) determine, using a ninety percent or more threshold, if the present value of the sum of the lease payments and any residual value guarantees equal or exceeds substantially all of the fair value of the underlying asset. We do not lease equipment of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. Each of the Company’s leases is classified as an operating lease. The Company elected the operating lease practical expedient for its leases to not separate non-lease components of regular maintenance services from associated lease components. This practical expedient is available when both of the following are met: (i) the timing and pattern of transfer of the non-lease components and associated lease component are the same and (ii) the lease component, if accounted for separately, would be classified as an operating lease. Property taxes paid by the lessor that are reimbursed by the lessee are considered to be lessor costs of owning the asset, and are recorded gross with revenue included in other non-interest income and expense recorded in operating expenses. The Company selected a lessor accounting policy election to exclude from revenue and expenses sales taxes and other similar taxes assessed by a governmental authority on lease revenue-producing transactions and collected by the lessor from a lessee. Operating lease equipment is carried at cost less accumulated depreciation. Operating lease equipment is depreciated to its estimated residual value using the straight-line method over the lease term or estimated useful life of the asset. Rental revenue on operating leases is recognized on a straight-line basis over the lease term unless collectability is not probable. In these cases rental revenue is recognized as payments are received. Recently Adopted Accounting Standards In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract , which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The Company early adopted ASU 2018-15 beginning January 1, 2019, and applied the guidance prospectively to the implementation costs incurred in its NetSuite ERP implementation. As of March 31, 2020, the Company has capitalized $0.5 million of implementation costs. New Accounting Standards To Be Adopted

Revenue

Revenue	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Healthcare Product and Product-Related Revenues and Services Revenue Healthcare Product and product-related revenue are generated from the sale of gamma cameras and post-warranty maintenance service contracts within our Diagnostic Imaging reportable segment. Healthcare Imaging services revenue are generated from providing diagnostic imaging services to customers within our Diagnostic Services and Mobile Healthcare reportable segments. Services revenue also includes lease income generated from interim rentals of imaging systems to our customers. Building and Construction Building and Construction revenue are generated from selling modular buildings for both single-family residential homes and larger commercial building projects from KBS, Builders, Inc. (“KBS”), and selling structural wall panels, permanent wood foundation systems and other engineered wood products from EdgeBuilder and GlenBrook (“Glenbrook” and together with EdgeBuilder, “EBGL”). Real Estate and Investments Star Real Estate Holdings USA, Inc. (“SRE”) generates revenue from lease of commercial properties and equipment and Lone Star Value Management, LLC (“LSVM”), a Connecticut based exempt reporting advisor, provides services that include investment advisory services, and the servicing of pooled investment vehicles. Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. Taxes collected from customers, which are subsequently remitted to governmental authorities, are excluded from revenue. The majority of our contracts have a single performance obligation, as we provide a series of distinct services that are substantially the same and are transferred with the same pattern to the customer. For contracts with multiple performance obligations, we allocate the total transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. We use an observable price to determine the stand-alone selling price for separate performance obligations or a cost plus margin approach when one is not available. For bill and hold sales, we determine when the customer obtains control of the product on a case-by-case basis to determine the amount of revenue to recognize each period. Our products are generally not sold with a right of return and the Company does not provide significant credits or incentives, which may be required for as variable consideration when estimating the amount of revenue to be recognized. Disaggregation of Revenue The following tables present our revenues for the three months ended March 31, 2020 and 2019, disaggregated by major source (in thousands): Three Months Ended March 31, 2020 Diagnostic Services Diagnostic Imaging Mobile Healthcare Building and Construction Real Estate and Investments Total Major Goods/Service Lines Mobile Imaging $ 10,602 $ — $ 7,261 $ — $ — $ 17,863 Camera — 1,339 — — — 1,339 Camera Support — 1,522 — — — 1,522 Healthcare Revenue from Contracts with Customers 10,602 2,861 7,261 — — 20,724 Lease Income 212 — 2,406 84 — 2,702 Building and Construction — — — 5,400 — 5,400 Real Estate and Investments — — — — 31 31 Total Revenues $ 10,814 $ 2,861 $ 9,667 $ 5,484 $ 31 $ 28,857 Timing of Revenue Recognition Services and goods transferred over time $ 10,814 $ 1,487 $ 9,574 $ 84 $ — $ 21,959 Services and goods transferred at a point in time — 1,374 93 5,400 31 6,898 Total Revenues $ 10,814 $ 2,861 $ 9,667 $ 5,484 $ 31 $ 28,857 Three Months Ended March 31, 2019 Diagnostic Services Diagnostic Imaging Mobile Healthcare Total Major Goods/Service Lines Mobile Imaging $ 11,585 $ — $ 7,494 $ 19,079 Camera — 804 — 804 Camera Support — 1,719 — 1,719 Healthcare Revenue from Contracts with Customers 11,585 2,523 7,494 21,602 Lease Income 141 — 2,169 2,310 Building and construction — — — — Real Estate and Investments — — — — Total Revenues $ 11,726 $ 2,523 $ 9,663 $ 23,912 Timing of Revenue Recognition Services and goods transferred over time $ 11,726 $ 1,551 $ 9,525 $ 22,802 Services and goods transferred at a point in time — 972 138 1,110 Total Revenues $ 11,726 $ 2,523 $ 9,663 $ 23,912 Nature of Goods and Services Mobile Imaging Within our Diagnostic Services and Mobile Healthcare reportable segments, our sales are derived from providing services and materials to our customers, primarily physician practices and hospitals, that allow them to perform diagnostic imaging services at their site. We typically bundle our services in providing staffing, our imaging systems, licensing, radiopharmaceuticals, and supplies depending on our customers’ needs. Our contracts with customers are typically entered into annually and are billed on a fixed rate per-day or per-scan basis, depending on terms of the contract. For the majority of these contracts, the Company has the right to invoice the customer in an amount that directly corresponds with the value to the customer of the Company’s performance to date. The Company uses the practical expedient to recognize revenue corresponding with amounts we have the right to invoice for services performed. Camera Within our Diagnostic Imaging segment, camera revenues are generated from the sale of internally developed solid-state gamma camera imaging systems. We recognize revenue upon transfer of control to the customer, which is generally upon delivery and acceptance. We also provide installation services and training on cameras we sell, primarily in the United States. Installation and initial training is generally performed shortly after delivery. The Company recognizes revenues for installation and training over time as the customer receives and consumes benefits provided as the Company performs the installation services. Our sale of imaging systems includes a one Camera Support Within our Diagnostic Imaging segment, camera support revenue is derived from the sale of separately-priced extended maintenance contracts to camera owners, training, and the sale of parts to customers that do not have an extended warranty. Our separately priced service contracts range from 12 to 48 months. Service contracts are usually billed at the beginning of the contract period or at periodic intervals (e.g., monthly, quarterly, or annually) and revenue is recognized ratably over the term of the agreement. Services and training revenues are recognized in the period the services and training are performed. Revenue for sales of parts are recognized when the parts are delivered to the customer and control is transferred. Lease Income Within our Mobile Healthcare segment, we also generate income from interim rentals of our imaging systems to customers that are in the midst of new construction or refurbishing their current facilities. Rental contracts are structured as either a weekly or monthly payment arrangement and are accounted for as operating leases. Within our Building and Construction segment, KBS subleased the manufacturing building located in Waterford, Maine to North Country Steel Inc., a Maine corporation with an initial 5 year term rental agreement, commenced on September 6, 2019. The rental agreement is structured with a monthly payment arrangement and is accounted for as operating lease. Building and Construction Within the building and construction segment, ATRM, through its wholly-owned subsidiaries KBS Builders, Inc. (“KBS”), EdgeBuilder, Inc. (“EdgeBuilder”), and Glenbrook Building Supply, Inc. (“Glenbrook” and together with EdgeBuilder, “EBGL”), services residential and commercial construction projects by manufacturing modular housing units and other products and supplies general contractors with building materials. KBS manufactures modular buildings for both single-family residential homes and larger, commercial building projects. EdgeBuilder manufactures structural wall panels, permanent wood foundation systems and other engineered wood products, and GlenBrook is a retail supplier of lumber and other building supplies. Real Estate and Investments Within our real estate and investment division, Star Real Estate Holdings USA, Inc. (“SRE”), generates income from the lease of commercial properties and equipment, and Lone Star Value Management, LLC (“LSVM”), a Connecticut based exempt reporting advisor, provides services that include investment advisory services, and the servicing of pooled investment vehicles. Deferred Revenues We record deferred revenues when cash payments are received or due in advance of our performance, including amounts that are refundable. We have determined our contracts do not include a significant financing component. The majority of our deferred revenue relates to payments received on camera support post-warranty service contracts, which are billed at the beginning of the annual contract period or at periodic intervals (e.g.,monthly, quarterly, or annually). Changes in the deferred revenues for three months ended March 31, 2020, is as follows (in thousands): Balance at December 31, 2019 $ 1,801 Revenue recognized that was included in balance at beginning of the year (778) Deferred revenue, net, related to contracts entered into during the year 623 Balance at March 31, 2020 $ 1,646 Included in the balances above as of March 31, 2020 and December 31, 2019 is non-current deferred revenue included in other liabilities of $20 thousand and $15 thousand, respectively. The Company has elected to use the practical expedient under ASC 606 to exclude disclosures of unsatisfied remaining performance obligations for (i) contracts having an original expected length of one year or less or (ii) contracts for which the practical expedient has been applied to recognize revenue at the amount for which it has a right to invoice. Contract Costs We recognize an asset for the incremental costs of obtaining a contract with a customer if we expect the benefit of those costs to be longer than one year. The Company applies a practical expedient to expense costs as incurred for costs to obtain a contract when the amortization period would have been one year or less. These costs mainly include the Company’s internal sales commissions; under the terms of these programs these are generally earned and the costs are recognized at the time the revenue is recognized.

Basic and Diluted Net Income (L

Basic and Diluted Net Income (Loss) Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract]
Basic and Diluted Net Income (Loss) Per Share	Basic and Diluted Net Income (Loss) Per Share For the three months ended March 31, 2020 and 2019, basic net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted net income per common share is calculated to give effect to all dilutive securities, if applicable, using the treasury stock method. In periods for which there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive. The following table sets forth the reconciliation of shares used to compute basic and diluted net (loss) income per share for the periods indicated (in thousands): Three Months Ended March 31, 2020 2019 Numerator: Net loss $ (2,953) $ (1,657) Deemed dividend on Series A redeemable preferred stock (484) — Net loss attributable to common shareholders $ (3,437) $ (1,657) Denominator: Weighted average shares outstanding - basic 2,055 2,028 Dilutive potential common shares: Stock options — — Restricted stock units — — Weighted average shares outstanding - diluted 2,055 2,028 Net loss per common share - basic and diluted Net loss per share, continuing operations $ (1.44) $ (0.82) Preferred dividends per share (0.23) — Net loss per common share—basic and diluted $ (1.67) $ (0.82) The computation of diluted earnings per share excludes stock options and stock units that are anti-dilutive. The following common stock equivalents were anti-dilutive (in thousands): Three Months Ended March 31, 2020 2019 Stock options 54 56 Restricted stock units 13 24 Total 67 80

Merger

Merger	3 Months Ended
	Mar. 31, 2020
Business Combinations [Abstract]
Merger	Merger On September 10, 2019 (the “ATRM Acquisition Date”), Digirad completed its acquisition of ATRM pursuant to the ATRM Merger Agreement under which Merger Sub (a wholly owned subsidiary of Digirad) merged with and into ATRM, with ATRM surviving as a wholly owned subsidiary of Digirad. As a result of the ATRM Merger, ATRM’s operations have been included in our consolidated financial statements since the ATRM Acquisition Date. ATRM, through its wholly-owned subsidiaries, KBS, Glenbrook, and EdgeBuilder, services residential and commercial construction projects by manufacturing modular housing units, structural wall panels, permanent wood foundation systems, and other engineered wood products and supplies general contractors with building materials. LSVM, which was a wholly owned subsidiary of ATRM on the ATRM Acquisition Date, is a Connecticut based exempt reporting advisor that was acquired by the Company in the ATRM Acquisition. At the effective time of the ATRM Merger, (i) each share of ATRM common stock was converted into the right to receive three one-hundredths (0.03) of a share of 10.0% Series A Cumulative Perpetual Preferred Stock, par value $0.0001 per share, of the Company (Company Preferred Stock) and (ii) each share of ATRM 10.00% Series B Cumulative Preferred Stock, par value $0.001 per share (ATRM Preferred Stock), converted into the right to receive two and one-half (2.5) shares of Company Preferred Stock, for an approximate aggregate total of 1.6 million shares of Company Preferred Stock. No fractional shares of Company Preferred Stock were issued to any ATRM shareholder in the ATRM Merger. Each ATRM shareholder who would otherwise have been entitled to receive a fraction of a share of Company common stock in the ATRM Merger received one whole share of Company Preferred Stock. The acquisition-date fair value of the consideration transferred in connection with the ATRM Merger approximately $17.5 million, which consisted of the following (in thousands): Digirad Series A Cumulative Perpetual Preferred Stock (1,615,637 shares) $ 16,156 Settlement of pre-existing note receivable between DRAD and ATRM 296 Fair value of pre-existing joint venture settlement between DRAD and ATRM 1,000 Estimated purchase price $ 17,452 The fair value of the preferred shares issued was determined based on the product of (a) $10.00 (the stated liquidation preference per share of Company Preferred Stock), and (b) 1,615,637 (the number of shares of Company Preferred Stock were issued and exchanged in the ATRM Merger). The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed at the ATRM Acquisition Date (in thousands): (in thousands) As originally reported Measurement period adjustments As adjusted Cash and cash equivalents $ — $ — $ — Accounts receivable, net 2,831 — 2,831 Inventory, net 1,609 — 1,609 Other current assets 481 252 733 Property and equipment, net 840 — 840 Operating Lease Right-of-use assets, net 495 — 495 Accounts payable and other accrued liabilities (10,851) — (10,851) Debt and notes payable (5,144) — (5,144) Lease liability (499) — (499) Deferred income taxes — (265) (265) Net assets acquired (liabilities assumed) (10,238) (13) (10,251) Goodwill 8,230 3 8,233 Intangibles 19,460 10 19,470 Estimated purchase price $ 17,452 $ — $ 17,452 The $19.5 million of identified intangible assets was allocated as follows (in thousands): Fair Value Useful Life Trade Names $ 5,540 15 Customer Relationships - Modular Buildings 7,830 10 Customer Relationships - Wood Products 5,670 10 Backlog 430 1 Fair value of identified intangible assets $ 19,470 Goodwill and intangibles of $8.2 million and $19.5 million, respectively, were assigned to the segments. The goodwill recognized is attributable primarily to expected synergies and the assembled workforce of ATRM. As of March 31, 2020, there were no changes in the recognized amounts of goodwill resulting from the acquisition of ATRM. The Company recognized $2.3 million of acquisition related costs including legal, accounting that were expensed in 2019. The amounts of revenue and earnings of ATRM included in the Company’s condensed consolidated statement of operations from the ATRM Acquisition Date to the period ending March 31, 2020 are as follows (in thousands): Revenue $ 5,515 Net loss $ (1,502) The following represents the pro forma condensed consolidated statement of operations as if ATRM had been included in the consolidated results of the Company for the three months ending March 31, 2020 and 2019 (in thousands): Three Months Ended March 31, 2020 2019 Revenue $ 28,857 $ 31,247 Net loss $ (2,844) $ (2,892) These amounts have been calculated after applying the Company’s accounting policies and adjusting the results of ATRM to reflect the additional depreciation and amortization that would have been charged assuming the fair value adjustments to property, plant, and equipment and intangible assets had been applied on January 1, 2019, together with the consequential tax effects.

Supplementary Balance Sheet Inf

Supplementary Balance Sheet Information	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Supplementary Balance Sheet Information	Supplementary Balance Sheet Information The components of inventories are as follows (in thousands): March 31, December 31, Raw materials $ 3,855 $ 4,309 Work-in-process 2,723 2,710 Finished goods 352 461 Total inventories 6,930 7,480 Less reserve for excess and obsolete inventories (313) (383) Total inventories, net $ 6,617 $ 7,097 Property and equipment consist of the following (in thousands): March 31, December 31, 2019 Land $ 995 $ 995 Buildings and leasehold improvements 5,451 5,451 Machinery and equipment 57,388 57,417 Total property and equipment 63,834 63,863 Less accumulated depreciation (43,072) (41,725) Total property and equipment, net $ 20,762 $ 22,138

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	Leases Lessee We have operating and finance leases for corporate offices, vehicles, and certain equipment. Our leases have remaining lease terms of 1 year to 7 years, some of which include options to extend the leases and some of which include options to terminate the leases within 1 year. Operating leases are included separately in the unaudited condensed consolidated balance sheets and finance lease assets are included in property and equipment with the related liabilities included in other current liabilities and other liabilities in the condensed consolidated balance sheets. The components of lease expense are as follows (in thousands): Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Operating lease cost $ 556 $ 326 Finance lease cost: Amortization of finance lease assets $ 183 $ 53 Interest on finance lease liabilities 34 33 Total finance lease cost $ 217 $ 86 Supplemental cash flow information related to leases was as follows (in thousands): Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 545 $ 287 Operating cash flows from finance leases $ 34 $ 33 Financing cash flows from finance leases $ 229 $ 184 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 1,161 $ 323 Finance leases $ 25 $ 145 Supplemental balance sheet information related to leases was as follows (in thousands): March 31, December 31, Operating lease right-of-use assets, net $ 5,310 $ 4,827 Operating lease liabilities $ 2,009 $ 1,866 Operating lease liabilities, net of current 3,404 3,073 Total operating lease liabilities $ 5,413 $ 4,939 Finance lease assets $ 4,244 $ 4,541 Finance lease accumulated amortization (1,580) (1,701) Finance lease assets, net $ 2,664 $ 2,840 Finance lease liabilities $ 923 $ 934 Finance lease liabilities, net of current 1,292 1,512 Total finance lease liabilities $ 2,215 $ 2,446 Weighted-Average Remaining Lease Term (in years) Operating leases 3.0 2.9 Finance leases 2.5 2.7 Weighted-Average Discount Rate Operating leases 5.32 % 5.45 % Finance leases 6.00 % 6.34 % We are committed to making future cash payments on non-cancelable operating leases and finance leases (including interest). The future minimum lease payments due under both non-cancelable operating leases and finance leases having initial or remaining lease terms in excess of one year as of March 31, 2020 were as follows (in thousands): Operating Finance 2020 (excludes the three-months ended March 31, 2020) $ 1,722 $ 770 2021 1,854 989 2022 1,106 466 2023 673 151 2024 and thereafter 552 7 Total future minimum lease payments $ 5,907 $ 2,383 Less amounts representing interest 494 168 Present value of lease obligations $ 5,413 $ 2,215
Leases	Leases Lessee We have operating and finance leases for corporate offices, vehicles, and certain equipment. Our leases have remaining lease terms of 1 year to 7 years, some of which include options to extend the leases and some of which include options to terminate the leases within 1 year. Operating leases are included separately in the unaudited condensed consolidated balance sheets and finance lease assets are included in property and equipment with the related liabilities included in other current liabilities and other liabilities in the condensed consolidated balance sheets. The components of lease expense are as follows (in thousands): Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Operating lease cost $ 556 $ 326 Finance lease cost: Amortization of finance lease assets $ 183 $ 53 Interest on finance lease liabilities 34 33 Total finance lease cost $ 217 $ 86 Supplemental cash flow information related to leases was as follows (in thousands): Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 545 $ 287 Operating cash flows from finance leases $ 34 $ 33 Financing cash flows from finance leases $ 229 $ 184 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 1,161 $ 323 Finance leases $ 25 $ 145 Supplemental balance sheet information related to leases was as follows (in thousands): March 31, December 31, Operating lease right-of-use assets, net $ 5,310 $ 4,827 Operating lease liabilities $ 2,009 $ 1,866 Operating lease liabilities, net of current 3,404 3,073 Total operating lease liabilities $ 5,413 $ 4,939 Finance lease assets $ 4,244 $ 4,541 Finance lease accumulated amortization (1,580) (1,701) Finance lease assets, net $ 2,664 $ 2,840 Finance lease liabilities $ 923 $ 934 Finance lease liabilities, net of current 1,292 1,512 Total finance lease liabilities $ 2,215 $ 2,446 Weighted-Average Remaining Lease Term (in years) Operating leases 3.0 2.9 Finance leases 2.5 2.7 Weighted-Average Discount Rate Operating leases 5.32 % 5.45 % Finance leases 6.00 % 6.34 % We are committed to making future cash payments on non-cancelable operating leases and finance leases (including interest). The future minimum lease payments due under both non-cancelable operating leases and finance leases having initial or remaining lease terms in excess of one year as of March 31, 2020 were as follows (in thousands): Operating Finance 2020 (excludes the three-months ended March 31, 2020) $ 1,722 $ 770 2021 1,854 989 2022 1,106 466 2023 673 151 2024 and thereafter 552 7 Total future minimum lease payments $ 5,907 $ 2,383 Less amounts representing interest 494 168 Present value of lease obligations $ 5,413 $ 2,215

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Financial Instruments	Financial Instruments Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents information about our financial assets that are measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques we utilize to determine such fair value at March 31, 2020 and December 31, 2019 (in thousands). Fair Value as of March 31, 2020 Level 1 Level 2 Level 3 Total Equity securities $ 18 $ 26 $ — $ 44 Total $ 18 $ 26 $ — $ 44 Fair Value as of December 31, 2019 Level 1 Level 2 Level 3 Total Equity securities $ 26 $ 43 $ — $ 69 Lumber derivative contracts 10 — — 10 Total $ 36 $ 43 $ — $ 79 The investment in equity securities consists of common stock of publicly traded companies. The Company occasionally enters into lumber derivative contracts in order to protect its gross profit margins from fluctuations caused by volatility in lumber prices. At March 31, 2020, the Company had no lumber derivative contracts. The level 1 and 2 securities and derivative contracts are included in other assets on the Company’s condensed unaudited consolidated balance sheet. The fair values are based on the closing prices observed on March 31, 2020. During the three months ended March 31, 2020 and March 31, 2019, the Company recorded unrealized losses and gains of $26 thousand and $28 thousand, respectively, in the condensed unaudited consolidated statement of operations. We did not reclassify any investments between levels in the fair value hierarchy during the three months ended March 31, 2020. The fair values of the Company’s revolving credit facility approximate carrying value due to the variable rate nature of these borrowings.

Debt

Debt	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Debt	Debt A summary of the Company’s revolving credit facilities and related party notes are as follows (in thousands): March 31, 2020 December 31, 2019 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate Revolving Credit Facility - Gerber KBS $ 600 6.00 % $ 1,111 7.50 % Revolving Credit Facility - Premier — — % 2,925 6.25 % Total Short Term Revolving Credit Facility $ 600 6.00 % $ 4,036 6.59 % Revolving Credit Facility - SNB $ 15,321 3.49 % $ 17,038 4.26 % Revolving Credit Facility - Gerber EBGL 1,279 6.00 % — — % Total Long Term Revolving Credit Facility $ 16,600 3.68 % $ 17,038 4.26 % LSV Co-Invest I Promissory Note (“January Note”) $ 631 12.00 % $ 595 12.00 % LSV Co-Invest I Promissory Note (“June Note”) 1,086 12.00 % 1,023 12.00 % LSVM Note 317 12.00 % 302 12.00 % Total Notes Payable To Related Parties $ 2,034 12.00 % $ 1,920 12.00 % Term Loan Facilities The following table presents the Star and Premier term loans balance net of unamortized debt issuance costs as of March 31, 2020 (in thousands): March 31, 2020 Amount Gerber - Star Term Loan $ 2,350 Premier - Term Loan 974 Total Principal 3,324 Unamortized debt issuance costs (538) Total $ 2,786 Digirad Loan Agreement On March 29, 2019, the Company entered into a Loan and Security Agreement (the “SNB Loan Agreement”) by and among certain subsidiaries of the Company, as borrowers (collectively, the “SNB Borrowers”); the Company, as guarantor; and Sterling National Bank, a national banking association, as lender (“Sterling” or “SNB”). The SNB Loan Agreement is a five At the SNB Borrowers’ option, the SNB Credit Facility will bear interest at either (i) a Floating LIBOR Rate, as defined in the SNB Loan Agreement, plus a margin of 2.50% per annum; or (ii) a Fixed LIBOR Rate, as defined in the SNB Loan Agreement, plus a margin of 2.25% per annum. The Company used a portion of the financing made available under the SNB Credit Facility to refinance and terminate, effective as of March 29, 2019, its previous credit facility with Comerica Bank, a Texas banking association (“Comerica”). The SNB Loan Agreement includes certain representations, warranties of SNB Borrowers, as well as events of default and certain affirmative and negative covenants by the SNB Borrowers that are customary for loan agreements of this type. These covenants include restrictions on borrowings, investments and dispositions by SNB Borrowers, as well as limitations on the SNB Borrowers’ ability to make certain distributions. Upon the occurrence and during the continuation of an event of default under the SNB Loan Agreement, SNB may, among other things, declare the loans and all other obligations under the SNB Loan Agreement immediately due and payable and increase the interest rate at which loans and obligations under the SNB Loan Agreement bear interest. The SNB Credit Facility is secured by a first-priority security interest in substantially all of the assets of the Company and the SNB Borrowers and a pledge of all shares of the SNB Borrowers. On March 29, 2019, in connection with the Company’s entry into the SNB Loan Agreement, Mr. Eberwein, the Chairman of the Company’s board of directors, entered into Limited Guaranty Agreement (the “SNB Eberwein Guaranty”) with SNB pursuant to which he guaranteed to SNB the prompt performance of all the Borrowers’ obligations to SNB under the SNB Loan Agreement, including the full payment of all indebtedness owing by Borrowers to SNB under or in connection with the SNB Loan Agreement and related SNB Credit Facility documents. Mr. Eberwein’s obligations under the SNB Eberwein Guaranty are limited in the aggregate to the amount of (a) $1.5 million, plus (b) reasonable costs and expenses of SNB incurred in connection with the SNB Eberwein Guaranty. Mr. Eberwein’s obligations under the SNB Eberwein Guaranty terminate upon the Company and Borrowers achieving certain milestones set forth therein. At March 31, 2020, Digirad was in compliance with SNB covenants. ATRM Promissory Notes See Note 12, Related Party Transactions , for information regarding certain ATRM promissory notes that are outstanding. KBS Loan Agreement On February 23, 2016, ATRM, KBS and Main Modular Haulers, Inc. (a subsidiary of ATRM) entered into a Loan and Security Agreement, (as amended, the “KBS Loan Agreement”), with Gerber Finance Inc. (“Gerber”). The KBS Loan Agreement provides KBS with a revolving line of credit with borrowing availability of up to $4.0 million. Availability under the line of credit is based on a formula tied to KBS’s eligible accounts receivable, inventory and other collateral. The KBS Loan Agreement, which was scheduled to expire on February 22, 2018, has been automatically extended for successive one one The parties to the KBS Loan Agreement have amended the KBS Loan Agreement to provide for increased availability under the KBS Loan Agreement to KBS under certain circumstances, including for new equipment additions, and certain other changes, as well as a waiver of certain covenants. As of December 31, 2019 and 2018, KBS was not in compliance with the financial covenants requiring no net annual post-tax loss for KBS or the minimum leverage ratio covenant as of 2018. The occurrence of any event of default under the KBS Loan Agreement may result in KBS’s obligations under the KBS Loan Agreement becoming immediately due and payable. In April 2019, June 2019 and February 2020, we obtained a waiver from Gerber for these events. In addition obtaining a waiver for these covenants, the Company and Gerber agreed to eliminate the minimum leverage ratio covenant for fiscal years after 2018. On September 10, 2019, the parties of the KBS Loan Agreement entered into a Consent and Acknowledgment Agreement and Twelfth Amendment to Loan Agreement (the “Twelfth Amendment”), by and among Gerber, KBS, ATRM and the Company, pursuant to which the Company agreed to guarantee amounts borrowed by certain ATRM’s subsidiaries from Gerber. The Twelfth Amendment requires the Company to serve as an additional guarantor with the existing guarantor, ATRM, with respect to the payment, performance and discharge of each and every obligation of payment and performance by the borrowing subsidiaries with respect to the loans made by Gerber to them. The Twelfth Amendment also provides that upon payment in full of the EBGL Obligations (as defined therein), the amount of the Cash Collateral (as defined therein) will be reduced to $0.3 million. Additionally, ATRM had on deposit $0.2 million in a collateral account maintained with Gerber to secure the loans under the KBS Loan Agreement which was returned to ATRM in November 2019. On January 31, 2020, the Company, ATRM, KBS and Gerber entered into a Thirteenth Amendment to Loan and Security Agreement (the “Thirteenth Amendment”) to amend the terms of the KBS Loan Agreement, in order to, among other things (a) amend the definitions of “Ancillary Credit Parties,” “Guarantor,” “Obligations,” and “Subordinated Lender” to address the obligations of the Star Borrowers, the EBGL Borrowers, the Star Credit Parties, and the EBGL Credit Parties under the Star Loan Agreement, EBGL Loan Agreement and the Subordination Agreements (each as defined below) to which they are a party and (b) add a new cross default provision. As of March 31, 2020, approximately $0.6 million was outstanding under the KBS Loan Agreement. On March 5, 2020, in connection with the First EBGL Amendment, Gerber, KBS, ATRM and the Company entered into a Consent and as a Fourteenth Amendment to Loan and Security Agreement that amended the KBS Loan Agreement (the “Consent and Fourteenth Amendment”). Under the terms of the Consent and Fourteenth Amendment, the parties thereto (and the subordinated creditors that consented thereto) consented to the First EBGL Amendment and agreed that cash collateral would no longer be part of the borrowing base and that the borrowing base would no longer be based on cash availability for purposes of the KBS Loan Agreement. On April 1, 2020, Gerber and KBS entered into a Fifteenth Amendment to Loan Agreement (the “Fifteenth Amendment”) pursuant to which the “Minimum Average Monthly Loan Amount” under the KBS Loan Agreement was decreased to twenty-five percent (25%) of the Maximum Revolving Amount (as defined in the KBS Loan Agreement). EBGL Premier Note On June 30, 2017, EdgeBuilder and Glenbrook (together, EBGL) entered into a Revolving Credit Loan Agreement (as amended, the “Premier Loan Agreement”) with Premier Bank (“Premier”) providing EBGL with a working capital line of credit of up to $3.0 million. The Premier Loan Agreement replaced the prior revolving credit facility under a loan and security agreement with Gerber (the “EBGL Loan Agreement”), which was terminated on the same date and all obligations of EBGL and ATRM in favor of Gerber in connection with the EBGL Loan Agreement were extinguished. Availability under the Premier Loan Agreement is based on a formula tied to EBGL’s eligible accounts receivable, inventory and equipment, and borrowings bear interest at the prime rate plus 1.50%, with interest payable monthly and the outstanding principal balance payable upon expiration of the term of the Premier Loan Agreement. The Premier Loan Agreement also provides for certain fees payable to Premier during its term. The initial term of the Premier Loan Agreement was scheduled to expire on June 30, 2018, but was extended by Premier until February 1, 2019, and in July 2019, it was extended further by Premier until October 1, 2019. On October 1, 2019, it was extended until November 1, 2019; and on November 1, 2019, was extended until January 1, 2020; and on January 31, 2020, it was extended until January 31, 2023. The Premier Loan Agreement may be further extended from time to time at our request, subject to approval by Premier. EBGL’s obligations under the Premier Loan Agreement are secured by all of their inventory, equipment, accounts and other intangibles, fixtures and all proceeds of the foregoing. As of December 31, 2019, EBGL was in compliance with the following covenants under the Premier Loan Agreement: (i) a requirement to maintain a Debt Service Coverage Ratio for the calendar year of at least 1.0; and (ii) a requirement to deliver ATRM’s fiscal year-end audited financial statements within 120 days of the end of each calendar year. The occurrence of any event of default under the Premier Loan Agreement may result in EBGL’s obligations under the Premier Loan Agreement becoming immediately due and payable. On January 31, 2020, contemporaneously with the execution and delivery of the Star Loan Agreement and EBGL Loan Agreement described below, Glenbrook and EdgeBuilder entered into an Extension and Modification Agreement (the “Modification Agreement”) with Premier that modified the terms of that certain Revolving Credit Promissory Note (the “Premier Note”) made by Glenbrook and EdgeBuilder pursuant to that the Premier Loan Agreement. Pursuant to the Modification Agreement, the amount of indebtedness evidenced by the Premier Note was reduced to $1.0 million, and the Premier Note was modified to, among other things: (a) extend the Final Maturity Date (as defined in the Premier Note) of the Premier Note to January 31, 2023, and (b) set the interest that the Premier Note will bear at 5.75% per annum. As a condition to close and to then later extend the term of the Premier Loan Agreement, ATRM and Mr. Eberwein executed a guaranty in favor of Premier, which has, through the multiple extensions described above, been extended through January 1, 2023, under which ATRM and Mr. Eberwein have absolutely and unconditionally guaranteed all of EBGL’s obligations under the Premier Loan Agreement. As of March 31, 2020, approximately $1.0 million was outstanding under the Premier Loan Agreement. Gerber Star and EBGL Loans On January 31, 2020, SRE, 947 Waterford Road, LLC (“947 Waterford”), 300 Park Street, LLC (“300 Park”), and 56 Mechanic Falls Road, LLC (“56 Mechanic” and together with SRE, 947 Waterford, and 300 Park, (the “Star Borrowers”), each an Investments Subsidiary, and the Company, ATRM, KBS, EdgeBuilder, and Glenbrook (collectively, the “Star Credit Parties”), entered into a Loan and Security Agreement (as amended, the “Star Loan Agreement”) with Gerber providing the Star Borrowers with a credit facility with borrowing availability of up to $2.5 million ($2.0 million and $0.5 million to KBS and EBGL, respectively) (the “Star Term Loan”). The advance of $2.0 million to KBS is to be repaid in monthly installments of sixty (60) consecutive equal payments. The advance of $0.5 million to EBGL, which has been temporarily increased by $0.3 million due to be repaid on April 30, 2020, is to be repaid in monthly installments of twelve (12) consecutive equal payments. On February 20, 2020, the Star Borrowers entered into a First Amendment to Loan and Security Agreement (the “First Star Amendment”) with Gerber that amended the Star Loan Agreement in order to (i) temporarily advance $0.3 million to EBGL, which amount was, prior to the Second Star Amended described below, to be repaid to Gerber on or before April 30, 2020; (ii) clarify that Gerber can make multiple advances under the Star Loan Agreement, and (iii) to correct the maturity date of the Star Term Loan. On April 30, 2020, the Star Borrowers entered into a Second Amendment to Loan and Security Agreement (the “Second Star Amendment”) with Gerber that amended the Star Loan Agreement in order to change terms of repayment for the advance of $0.3 million to EBGL provided for under the First Star Amendment. Under the terms of the Second Star Amendment, the advance of $0.3 million to EBGL is to be repaid in three (3) consecutive equal monthly installments on the thirtieth (30th) day in each calendar month, commencing May 30, 2020, and in a final installment on or before July 31, 2020. As of March 31, 2020, approximately $2.4 million was outstanding under the Star Loan Agreement. On January 31, 2020, EdgeBuilder and Glenbrook (the “EBGL Borrowers”), each a Construction Subsidiary, and the Company, Star, 947 Waterford, 300 Park, 56 Mechanic, ATRM, and KBS (collectively, the “EBGL Credit Parties”), entered into a Loan and Security Agreement (the “EBGL Loan Agreement”) with Gerber providing the EBGL Borrowers with a credit facility with borrowing availability of up to $3.0 million (the “EBGL Loan”). On March 5, 2020, the EBGL Borrowers entered into a First Amendment to Loan and Security Agreement (the “First EBGL Amendment”) with Gerber that amended the EBGL Loan Agreement and the KBS Loan Agreement in order to, among other things, include a pledge $0.3 million of cash collateral by LSVI under the EBGL Loan Agreement which, prior to the First EBGL Amendment, was pledged by LSVI in connection with the KBS Loan Agreement. As of March 31, 2020, approximately $1.3 million was outstanding under the EBGL Loan Agreement. Availability under the Star Loan Agreement is based on a formula tied to the value of real estate owned by the Star Borrowers, and borrowings bear interest at the prime rate plus 3.5% per annum. Availability under the EBGL Loan Agreement is based on a formula tied to the EBGL Borrowers’ eligible accounts receivable and inventory, and borrowings bear interest at the prime rate plus 2.75% per annum. The Loan Agreements also provide for certain fees payable to Gerber during their respective terms. The Star Term Loan matures on the earlier of (a) January 1, 2025 or (b) the termination, the maturity or repayment of the EBGL Loan. The EBGL Loan matures on the earlier of (a) January 1, 2022, unless extended, or (b) the termination, the maturity or repayment of the Star Term Loan. The maturity of the EBGL Loan is automatically extended for successive periods of one (1) year each unless terminated by Gerber or the EBGL Borrowers. The obligations of the EBGL Borrowers under the EBGL Loan Agreement are guaranteed by the EBGL Credit Parties and are secured by substantially all the assets of the EBGL Borrowers and the EBGL Credit Parties. The obligations of the Star Borrowers under the Star Loan Agreement are guaranteed by the Star Credit Parties and are secured by substantially all the assets of the Star Borrowers and the Star Credit Parties. Contemporaneously with the execution and delivery of the Star Loan Agreement, Jeffrey E. Eberwein, the Chairman of the Company’s board of directors, executed and delivered a Guaranty (the “Gerber Eberwein Guaranty”) to Gerber pursuant to which he guaranteed the performance of all the Star Borrowers’ obligations to Gerber under the Star Loan Agreement, including the full payment of all indebtedness owing by the Star Borrowers to Gerber under or in connection with the Star Loan Agreement and related financing documents. Mr. Eberwein’s obligations under the Gerber Eberwein Guaranty are limited in the aggregate to the amount of (a) $2.5 million, plus (b) costs of Gerber incidental to the enforcement of the Guaranty or any guaranteed obligations. On March 5, 2020, contemporaneously with the execution and delivery of the First EBGL Amendment, Mr. Eberwein, the Chairman of the Company’s board of directors, executed and delivered a Guaranty (the “EBGL Eberwein Guaranty”) to Gerber pursuant to which he guaranteed the performance of all the EBGL Borrowers’ obligations to Gerber under the EBGL Loan Agreement, including the full payment of all indebtedness owing by the EBGL Borrowers to Gerber under or in connection with the EBGL Loan Agreement and related financing documents. Mr. Eberwein’s obligations under the EBGL Eberwein Guaranty are limited in the aggregate to the amount of (a) $0.5 million, plus (b) costs of Gerber incidental to the enforcement of the EBGL Eberwein Guaranty or any guaranteed obligations. The Star Loan Agreement and EBGL Loan Agreement contains representations, warranties, affirmative and negative covenants, events of default and other provisions customary for financings of this type. The financial covenants under the EBGL Loan Agreement applicable to the EBGL Borrowers include maintenance of a minimum tangible net worth, a minimum debt service coverage ratio and minimum net income. The Financial covenants under the Star Loan Agreement applicable to the Star Borrowers include a minimum debt service coverage ratio. The occurrence of any event of default under the Loan Agreements may result in the obligations of the Borrowers becoming immediately due and payable. As a condition to the extension of credit to the Star Borrowers and EBGL Borrowers under the Star Loan Agreement and EBGL Loan Agreement, the holders of certain existing unsecured promissory notes made by ATRM and certain of its subsidiaries entered into subordination agreements (the “Subordination Agreements”) with Gerber pursuant to which such noteholders (including the Company and certain of its subsidiaries) agreed to subordinate the obligations of ATRM and its subsidiaries to such noteholders to the obligations of the Star Borrowers and EBGL Borrowers to Gerber under the loan agreements.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and ContingenciesIn the normal course of business, we have been, and will likely continue to be, subject to other litigation or administrative proceedings incidental to our business, such as claims related to customer disputes, employment practices, wage and hour disputes, product liability, professional liability, commercial disputes, licensure restrictions or denials, and warranty or patent infringement. Responding to litigation or administrative proceedings, regardless of whether they have merit, can be expensive and disruptive to normal business operations. We are not able to predict the timing or outcome of these matters.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We provide for income taxes under the asset and liability method. This approach requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of differences between the tax basis of assets or liabilities and their carrying amounts in the financial statements. We provide a valuation allowance for deferred tax assets if it is more likely than not that these items will expire before we are able to realize their benefit. We calculate the valuation allowance in accordance with the authoritative guidance relating to income taxes, which requires an assessment of both positive and negative evidence regarding the realizability of these deferred tax assets, when measuring the need for a valuation allowance. Significant judgment is required in determining any valuation allowance against deferred tax assets. As of December 31, 2018, as a result of a three-year cumulative loss and recent events, such as the unanticipated termination of the Philips distribution agreement and its effect on our forecasted income, we concluded that a full valuation allowance was necessary to offset our deferred tax assets. We continue to record a full valuation allowance against our deferred tax assets and intend to maintain a valuation allowance until sufficient positive evidence exists to support its reversal. Intraperiod tax allocation rules require us to allocate our provision for income taxes between continuing operations and other categories of comprehensive income, such as discontinued operations. In periods in which we have a year-to-date pre-tax loss from continuing operations and pre-tax income in other categories of comprehensive income, such as discontinued operations, we must consider that income in determining the amount of tax benefit that results from a loss in continuing operations and that shall be allocated to continuing operations. For the three months ended March 31, 2020, the Company recorded an income tax expense of $34 thousand. For the three months ended March 31, 2019, the Company recorded an income tax benefit of $8 thousand within continuing operations. As of March 31, 2020, we had unrecognized tax benefits of approximately $2.8 million related to uncertain tax positions. Included in the unrecognized tax benefits were $2.3 million of tax benefits that, if recognized, would reduce our annual effective tax rate, subject to the valuation allowance. We file income tax returns in the U.S. and in various state jurisdictions with varying statutes of limitations. We are no longer subject to income tax examination by tax authorities for years prior to 2015; however, our net operating loss carryforwards and research credit carryforwards arising prior to that year are subject to adjustment. Our policy is to recognize interest expense and penalties related to income tax matters as a component of income tax expense. On March 27, 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"). There were several income tax provisions included in the CARES Act, as well as other non-tax matters incorporated into law as a result of the enactment of the CARES Act. Under the CARES Act, net operating losses generated in tax years 2018, 2019, and 2020 can be carried back five years, allowing corporate taxpayers to amend earlier tax returns and potentially obtain a tax refund. In addition, losses generated and utilized prior to January 1, 2021 are not subject to the 80 percent limitation that was previously applied to losses generated after December 31, 2017 under the Tax Cuts and Jobs Act of 2017. The Company doesn’t currently estimate that any tax will be recoverable from these tax provisions and therefore does not anticipate there to be a material impact from these provisions on the Company’s income tax balances in its current year financial statements. The Tax Cuts and Jobs Act of 2017 limited interest deductions to 30% of adjusted taxable income ("ATI"). The CARES Act increases the limitation to 50 percent of adjusted taxable income for tax years 2019 or 2020, thereby raising the limitation ceiling and potentially allowing for increased interest deductions. In addition, companies have the option of using 2019 ATI to compute the limitation for 2020. The Company tentatively plans to take advantage of certain of these provisions to eliminate any potential section 163(j) interest carryovers from its inventory of deferred tax assets for the year ending December 31, 2020. The CARES Act adopts a technical correction to the Tax Cuts and Jobs Act's apparent oversight in excluding the eligibility of qualified improvement property (e.g., real estate/leasehold improvements) from eligibility for bonus depreciation for tax years after 2017. Companies are allowed to amend 2018 income tax or file accounting method changes in 2019 to claim the additional deductions. The Company is still evaluating the impact of this provision; however, the Company does not anticipate that this provision will have any impact on the Company’s tax expense or payable balances. If pursued, this provision may have an impact on the Company’s allocation of its deferred tax assets related to property, plant, and equipment and net operating losses, which are substantially offset by the Company’s full valuation allowance.

Segments

Segments	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Segments	Segments Our reporting segments have been determined based on the nature of the products and services offered to customers or the nature of their function in the organization. We evaluate performance based on the gross profit and operating income (loss). The Company does not identify or allocate its assets by operating segments. Segment information is as follows (in thousands): Three Months Ended March 31, 2020 2019 Revenue by segment: Diagnostic Services $ 10,814 $ 11,726 Diagnostic Imaging 2,861 2,523 Mobile Healthcare 9,667 9,663 Building and Construction 5,484 — Real Estate and Investments 189 — Corporate, eliminations and other (158) — Consolidated revenue $ 28,857 $ 23,912 Gross profit by segment: Diagnostic Services $ 2,005 $ 2,581 Diagnostic Imaging 869 786 Mobile Healthcare 1,198 614 Building and Construction 403 — Real Estate and Investments 124 — Corporate, eliminations and other (158) — Consolidated gross profit $ 4,441 $ 3,981 (Loss) income from operations by segment: Diagnostic Services $ 1,024 $ 1,736 Diagnostic Imaging 521 343 Mobile Healthcare 177 (623) Building and Construction (859) — Real Estate and Investments 106 — Corporate, eliminations and other (158) — Unallocated corporate and other expenses (3,415) (2,591) Consolidated loss from continuing operations $ (2,604) $ (1,135) Depreciation and amortization by segment: Diagnostic Services $ 329 $ 304 Diagnostic Imaging 63 78 Mobile Healthcare 1,378 1,427 Building and Construction 572 — Real Estate and Investments 65 — Total depreciation and amortization $ 2,407 $ 1,809

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Perma-Fix Prior to his resignation on April 6, 2020, John Climaco served as one of our directors and a member of the Audit and Strategic Advisory committees of our board of directors. Until July 11, 2017, Mr. Climaco also served as a director of Perma-Fix Environmental Services, Inc. (NASDAQ: PESI). Further, from June 2, 2015 until July 11, 2017, Mr. Climaco served as the Executive Vice President of Perma-Fix Medical S.A., a majority-owned Polish subsidiary of Perma-Fix Environmental Services, Inc. On July 27, 2015, we entered into a Stock Subscription Agreement (the “Subscription Agreement”) and Tc-99m Supplier Agreement (the “Supply Agreement”) with Perma-Fix Medical. Under the terms of the Subscription Agreement, we invested $1.0 million USD in exchange for 71,429 shares of Perma-Fix Medical. Pursuant to the Supply Agreement, should Perma-Fix Medical successfully complete development of its Tc-99m resin, Perma-Fix Medical will supply us or our preferred nuclear pharmacy supplier with Tc-99m at a preferred rate and we will purchase agreed upon quantities of such Tc-99m for our nuclear imaging operations, either directly or in conjunction with our preferred nuclear pharmacy supplier. As of March 31, 2020, the fair market value of the Perma-Fix Medical securities is $26 thousand. In addition, in connection with the Subscription Agreement, the Company’s President and Chief Executive Officer was appointed to the Supervisory Board of Perma-Fix Medical. Eberwein Guarantees On March 29, 2019, in connection with the Company’s entry into the SNB Loan Agreement, Mr. Eberwein, the Chairman of the Company’s board of directors, entered into a Limited Guaranty Agreement (the SNB Eberwein Guaranty) with SNB pursuant to which he guaranteed to SNB the prompt performance of all the Borrowers’ obligations to SNB under the SNB Loan Agreement, including the full payment of all indebtedness owing by SNB Borrowers to SNB under or in connection with the SNB Loan Agreement and related SNB Credit Facility documents. Mr. Eberwein’s obligations under the SNB Eberwein Guaranty are limited in the aggregate to the amount of (a) $1.5 million, plus (b) reasonable costs and expenses of SNB incurred in connection with the SNB Eberwein Guaranty. Mr. Eberwein’s obligations under the SNB Eberwein Guaranty terminate upon the Company and SNB Borrowers achieving certain milestones set forth therein. On January 31, 2020, contemporaneously with the execution and delivery of the Star Loan Agreement, Mr. Eberwein, the Chairman of the Company’s board of directors, executed and delivered a Guaranty (the Gerber Eberwein Guaranty) to Gerber pursuant to which he guaranteed the performance of all the Star Borrowers’ obligations to Gerber under the Star Loan Agreement, including the full payment of all indebtedness owing by the Star Borrowers to Gerber under or in connection with the Star Loan Agreement and related financing documents. Mr. Eberwein’s obligations under the Gerber Eberwein Guaranty are limited in the aggregate to the amount of (a) $2.5 million, plus (b) costs of Gerber incidental to the enforcement of the Gerber Eberwein Guaranty or any guaranteed obligations. On March 5, 2020, contemporaneously with the execution and delivery of the First EBGL Amendment, Mr. Eberwein, the Chairman of the Company’s board of directors, executed and delivered a Guaranty (the EBGL Eberwein Guaranty) to Gerber pursuant to which he guaranteed the performance of all the EBGL Borrowers’ obligations to Gerber under the EBGL Loan Agreement, including the full payment of all indebtedness owing by the EBGL Borrowers to Gerber under or in connection with the EBGL Loan Agreement and related financing documents. Mr. Eberwein’s obligations under the EBGL Eberwein Guaranty are limited in the aggregate to the amount of (a) $0.5 million, plus (b) costs of Gerber incidental to the enforcement of the EBGL Eberwein Guaranty or any guaranteed obligations. As a condition to the Premier Loan Agreement, Mr. Eberwein entered into a guaranty in favor of Premier, absolutely and unconditionally guaranteeing all of the borrowers’ obligations thereunder. Eberwein Premier Participation Pursuant to a certain Participation Agreement by and between Mr. Eberwein and Premier, which was signed on March 31, 2020 and was effective as of March 26, 2020, Mr. Eberwein purchased a ratable participation in, and assumed a ratable part of, the aggregate maximum principal amount of the outstanding balance of the loan under the Premier Loan Agreement in the amount of $0.25 million. ATRM Jeffrey E. Eberwein, the Chairman of our board of directors is also the Chief Executive Officer of Lone Star Value Management, LLC (“LSVM”), which is the investment manager of Lone Star Value Investors, LP (“LSVI”) and Lone Star Value Co-Invest I, LP (“LSV Co-Invest I”). Mr. Eberwein is also the sole manager of Lone Star Value Investors GP, LLC (“LSV GP”), the general partner of LSVI and LSV Co-Invest I, and is the sole owner of LSV Co-Invest I. LSVM was a wholly owned subsidiary of ATRM on the ATRM Acquisition Date (see Acquisition of LSVM below). Prior to the closing of the ATRM Merger, Mr. Eberwein was also Chairman of the board of directors of ATRM. On October 25, 2019, ATRM distributed its interest in LSVM to Digirad, resulting in LSVM becoming a wholly owned direct subsidiary of Digirad. Prior to the closing of the ATRM Merger, Mr. Eberwein and his affiliates owned approximately 4.3% of the outstanding Digirad common stock and 17.4% of the outstanding ATRM common stock. In addition, LSVI owned 222,577 shares of ATRM’s 10.0% Series B Cumulative Preferred Stock (the “ATRM Preferred Stock”) and another 374,562 shares of ATRM Preferred Stock were owned directly by LSV Co-Invest I. Through these relationships and other relationships with affiliated entities, Mr. Eberwein may be deemed the beneficial owner of the securities owned by LSVI and LSV Co-Invest I. Mr. Eberwein disclaimed beneficial ownership of ATRM Preferred Stock, except to the extent of his pecuniary interest therein. At the effective time of the ATRM Merger, (i) each share of ATRM common stock converted into the right to receive three one-hundredths (0.03) of a share of Company Preferred Stock and (ii) each share of ATRM Preferred Stock converted into the right to receive two and one-half (2.5) shares of Company Preferred Stock. As of March 31, 2020, Mr. Eberwein owned approximately 4.3% of the outstanding Digirad common stock. In addition, as of March 31, 2020, Mr. Eberwein owned 1,196,926 shares of Company Preferred Stock, and LSVI owned 300,000 shares of Company Preferred Stock. Mr. Eberwein as the CEO of LSVM, which is the investment advisor of LSVI, and as the sole manager of LSV GP, which is the general partner of LSVI Mr. Eberwein may be deemed the beneficial owner of the securities held by LSVI. Mr. Eberwein disclaims beneficial ownership of Company Preferred Stock, except to the extent of his pecuniary interest therein. Private Placement Immediately prior to the closing of the ATRM Merger, Digirad issued 300,000 shares of Company Preferred Stock in a private placement (the “Private Placement”) to LSVI for a price of $10.00 per share for total proceeds to the Company of $3.0 million. The Private Placement was made pursuant to the terms of a Stock Purchase Agreement, dated as of September 10, 2019 (the “SPA”). The shares of Company Preferred Stock sold in the Private Placement have not been registered under the Securities Act of 1933, as amended (the “Act”), and may not be resold absent registration under, or exemption from registration under, the Act. At the closing of the Private Placement, the Company and LSVI entered into a Registration Rights Agreement, dated as of September 10, 2019 (the “Registration Rights Agreement”), pursuant to which Digirad agreed to file a registration statement with the SEC, covering the resale of the shares of Company Preferred Stock issued in the Private Placement, if and upon the written request of the Private Placement investors at any time on or before September 10, 2021. Digirad is obligated to maintain the effectiveness of the registration statement from its effective date until the later of (a) the date on which all registrable shares covered by the registration statement have been sold, or may be sold without volume or manner of sale restrictions under Rule 144 or (b) the second anniversary of the closing date. Digirad agreed to use commercially reasonable efforts to have the registration statement declared effective by the SEC as soon as possible following the filing thereof. Put Option Agreement In addition, prior to the effective time of the ATRM Merger, we entered into a put option purchase agreement with Mr. Eberwein, pursuant to which we have the right to require Mr. Eberwein to acquire up to 0.1 million shares of our Series A Preferred Stock at a price of $10.00 per share for aggregate proceeds of up to $1.0 million at any time, in our discretion, during the 12 months following the effective time of the ATRM Merger (the “Issuance Option”). In March 2020, Mr. Eberwein extended the Issuance Option through June 30, 2021. ATRM Notes Payable ATRM, a wholly owned subsidiary of the Company as a result of the ATRM Merger, has the following related party promissory notes outstanding: (i) Unsecured promissory note (principal amount of $0.6 million payable to LSV Co-Invest I), with interest payable semi-annually at a rate of 10.0% per annum (LSV Co-Invest I may elect to receive interest in-kind at a rate of 12.0% per annum), with any unpaid principal and interest due on January 12, 2020 (the “January Note”). On November 13, 2019, LSV Co-Invest I extended the maturity date of the January Note from January 12, 2020, to the earlier of (i) October 1, 2020 and (ii) the date when the January Note is no longer subject to a certain Subordination Agreement dated January 12, 2018, as amended, in favor of Gerber, (ii) Unsecured promissory note (principal amount of $1.09 million payable to LSV Co-Invest I), with interest payable semi-annually at a rate of 10.0% per annum (LSV Co-Invest I may elect to receive interest in-kind at a rate of 12.0% per annum), with any unpaid principal and interest due on June 1, 2020 (the “June Note”). On November 13, 2019 LSV Co-Invest I also extended the maturity date of the June Note from June 1, 2020, to the earlier of (i) October 1, 2020 and (ii) the date when the January Note is no longer subject to a certain Subordination Agreement dated June 1, 2018, as amended, in favor of Gerber. (iii) Unsecured promissory note (principal amount of $0.3 million payable to LSVM), with interest payable annually at a rate of 10.0% per annum (LSVM may elect to receive any interest payment entirely in-kind at a rate of 12.0% per annum), with any unpaid principal and interest due on November 30, 2020 (the “LSVM Note”). LSVM and LSV Co-Invest I on July 17, 2019, waived any right to accelerate payment with respect to the ATRM Merger under the LSVM Note, the January Note, and the June Note. In March 2020, Mr. Eberwein, sole manager of LSV Co-Invest I and LSVM, provided the Company Letter of Support for the LSVM Note, the January Note, and the June Note indicating that the applicable holder of such notes will take no adverse action against ATRM for failure to pay the principal due on the applicable note by the maturity date and intends to work with the Company and ATRM to assure our financial success. Subordination Agreement LSVM and LSV Co-Invest I are party to subordination agreements with ATRM and Gerber pursuant to which LSVM and LSV Co-Invest I agreed to subordinate the obligations of ATRM under their unsecured promissory notes to the obligations of the borrowers to Gerber. Acquisition of LSVM On April 1, 2019, ATRM entered into a Membership Interest Purchase Agreement (the “LSVM Purchase Agreement”) with LSVM and Mr. Eberwein. Pursuant to the terms of the LSVM Purchase Agreement, Mr. Eberwein sold all of the issued and outstanding membership interests of LSVM to ATRM (the “LSVM Acquisition”) for a purchase price of $100.00, subject to a working capital adjustment provision. The LSVM Acquisition closed simultaneously with the execution and delivery of the LSVM Purchase Agreement, and was deemed effective as of January 1, 2019 for accounting purposes, as a result of which LSVM became a whollyowned subsidiary of ATRM. Pursuant to the LSVM Purchase Agreement, the current assets as well as the $0.3 million promissory note issued by ATRM and current liabilities existing prior to January 1, 2019 remain with Mr. Eberwein. Cash contributions made by Mr. Eberwein subsequent to the ATRM Acquisition also exist as a payment due to Mr. Eberwein by ATRM. The LSVM Purchase Agreement contains representations, warranties, covenants and indemnification provisions customary for transactions of this type. LSVM was acquired by the Company as part of the ATRM Acquisition. Financial Assistance On May 1, 2019, the special committee of the Company’s board of directors (the “Special Committee”) approved financial assistance by the Company to ATRM, in the form of advances or cash payments on behalf of ATRM, in order assist ATRM in becoming current with its financial statements and filings with the SEC. Under the terms of this approval, the Company was authorized to advance or spend up to an aggregate maximum amount of $0.4 million, with subsequent increments of $0.01 million subject to further approval by a designated member of the Special Committee. On July 30, 2019, the Special Committee increased the amount of financial assistance that the Company is authorized to provide to $0.8 million. The Company entered into an agreement with ATRM pursuant to which ATRM agreed to repay all such financial assistance if the ATRM Acquisition did not close. Joint Venture On December 14, 2018, Digirad and ATRM, entered into a joint venture and formed Star Procurement, LLC (“Star Procurement”), with Digirad and ATRM each holding a 50% interest. The purpose of the joint venture is to provide the service of purchasing and selling building materials and related goods to KBS with which Star Procurement entered into a Services Agreement on January 2, 2019. In accordance with the terms of the Star Procurement Limited Liability Company Agreement, Digirad made a $1.0 million capital contribution to the joint venture, which was made in January 2019. As of March 31, 2020, and upon the completion of the ATRM Merger, Star Procurement became wholly owned subsidiary of the Company. Note Receivable On December 14, 2018, the Company received an unsecured promissory note from ATRM in the principal amount of $0.3 million (the “ATRM Note”) in exchange for a loan to ATRM in the same amount. The ATRM Note bears interest at 10% per annum for the first 12 months of its term, and at 12% per annum for the remaining 12 months. All unpaid principal and interest is due on December 14, 2020. ATRM may prepay the note at any time after a specified amount of advance notice to the Company. The ATRM Note provides for customary events of default, the occurrence of any of which may result in the principal and unpaid interest then outstanding becoming immediately due and payable. The ATRM Note was included in other assets in the condensed unaudited consolidated balance sheets. As of March 31, 2020, and upon the completion of the ATRM Merger, the note receivable was effectively settled. Acquisitions and Leases of Maine Facilities Through its SRE subsidiary, and prior to the completion of the ATRM Merger, the Company purchased two plants in Maine that manufacture modular buildings from KBS, a wholly-owned subsidiary of ATRM. SRE then leased these properties back to KBS, as further described below. Waterford On April 3, 2019, 947 Waterford Road, LLC (“947 Waterford”), a wholly-owned subsidiary of SRE, entered into a Purchase and Sale Agreement (the “Waterford Purchase Agreement”) with KBS pursuant to which 947 Waterford closed on the purchase of certain real property and related improvements (including buildings) located in Waterford, Maine (the “Waterford Facility”) from KBS, and acquired the Waterford Facility. The purchase price of the Waterford Facility was $1.0 million, subject to adjustment for taxes and other charges and assessments. KBS subleased the manufacturing building located in Waterford, Maine to North Country Steel Inc., a Maine corporation with an initial 5 year term rental agreement, commenced on September 6, 2019. The rental agreement is structured with a monthly payment arrangement and is accounted for as operating lease. Paris On April 3, 2019, 300 Park Street, LLC (“300 Park”), a wholly-owned subsidiary of SRE, entered into a Purchase and Sale Agreement (the “Park Purchase Agreement”) with KBS, pursuant to which 300 Park closed on the purchase of certain real property and related improvements and personal property (including buildings, machinery and equipment) located in Paris, Maine (the “Park Facility”) from KBS, and acquired the Park Facility. The purchase price of the Park Facility was $2.9 million, subject to adjustment for taxes and other charges and assessments. Lease of Maine Facilities On April 3, 2019, KBS entered into a separate lease agreement with each of 947 Waterford (the “Waterford Lease”) and 300 Park (the “Park Lease”). The Waterford Lease has an initial term of 120 months, which is subject to extension. The base rental payments associated with the initial term under the Waterford Lease are estimated to be between $1.2 million and $1.3 million in the aggregate. The Park Lease has an initial term of 120 months, which is subject to extension. The base rental payments associated with the initial term under the Park Lease are estimated to be between $3.3 million and $3.6 million in the aggregate. ATRM has unconditionally guaranteed the performance of all obligations under the Waterford Lease and Park Lease to be performed by KBS under each lease, including, without limitation, the payment of all required rent. On March 27, 2019, 56 Mechanic Falls Road, LLC (“56 Mechanic”), a wholly-owned subsidiary of SRE, purchased from a third party certain property and equipment located in Oxford, Maine (the “Oxford Facility”). The transaction closed on April 25, 2019. The purchase price of the Oxford Facility was $1.2 million, subject to adjustment for taxes and other charges and assessments. On April 3rd and 18th of 2019, KBS signed a lease and an amendment, respectively, with 56 Mechanic (the “Oxford Lease”), which became effective upon the closing of the transaction. The initial term under the Oxford Lease will commence upon delivery of the Oxford Facility to KBS. The Oxford Lease has an initial term of 120 months, which is subject to extension. The base rental payments associated with the initial term under the Oxford Lease are estimated to be between $1.4 million and $1.5 million in the aggregate. ATRM has unconditionally guaranteed the performance of all obligations under the Oxford Lease to be performed by KBS, including, without limitation, the payment of all required rent. As of March 31, 2020 and upon the completion of the ATRM Merger, the Waterford Lease, the Park Lease and the Oxford Lease are treated as intercompany transactions and eliminated in the unaudited consolidated financial statements.

Redeemable Preferred Stock

Redeemable Preferred Stock	3 Months Ended
	Mar. 31, 2020
Temporary Equity Disclosure [Abstract]
Redeemable Preferred Stock	Redeemable Preferred Stock Holders of shares of the Company Preferred Stock will be entitled to receive, when, as and if, authorized by the Company’s board of directors (or a duly authorized committee of Digirad board of directors) and declared by the Company out of funds legally available for the payment of dividends, preferential cumulative cash dividends at the rate of 10.0% per annum of the liquidation preference of $10.00 per share. Dividends will be payable quarterly, in arrears, on the last calendar day of March, June, September and December to holders of record at the close of business on the first day of each payment month. As of March 31, 2020, the Company’s board has not declared a dividend on the Company Preferred Stock. A roll forward of the balance of Company Preferred Stock for the year ended March 31, 2020 is as follows (in thousands): Balance at December 31, 2019 $ 19,602 Deemed dividend on redeemable convertible preferred stock 484 Balance at March 31, 2020 $ 20,086

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On April 1, 2020, KBS entered into the Fifteenth Amendment with Gerber that amended the KBS Loan Agreement. See Note 8, Debt , within the notes to our accompanying unaudited consolidated financial statements for further details. On April 30, 2020, the Star Borrowers entered into the Second Star Amendment with Gerber that amended the Star Loan Agreement. See Note 8, Debt, within the notes to our accompanying unaudited consolidated financial statements for further details. On April 30, 2020, each of KBS, EdgeBuilder and Glenbrook executed a separate promissory note evidencing unsecured loans under the “Paycheck Protection Program” (the “PPP”). The promissory note executed by KBS is for $0.8 million (the “KBS Note”), the promissory note executed by EdgeBuilder is for $0.2 million (the “EdgeBuilder Note”) and the promissory note executed by Glenbrook is for $0.2 million (the “Glenbrook Note”). The KBS Note, the EdgeBuilder Note and the Glenbrook Note, each dated April 30, 2020, are referred to together as the “Construction Notes”. On May 11, 2020, the Company and each of Digirad Imaging Solutions, Inc. (“DIS”), DMS Imaging, Inc. (“DMS Imaging”) and DMS Health Technologies, Inc. (“DMS Health”), each a direct or indirect wholly owned subsidiary of the Company, executed a separate promissory note evidencing unsecured loans under the PPP. The promissory note executed by the Company, dated May 7, 2020, is for $0.8 million (the “Company Note”); the promissory note executed by DIS, dated May 5, 2020, is for $3.0 million (the “DIS Note”); the promissory note executed by DMS Imaging, dated May 5, 2020, is for $1.6 million (the “DMS Imaging Note”) and the promissory note executed by DMS Health, dated May 7, 2020, is for $0.1 million (the “DMS Health Note”). The Company Note, the DIS Note, the DMS Imaging Note, and the DMS Health Note are referred to together as the “Healthcare Notes”. The Construction Notes and the Healthcare Notes are referred to collectively as the “PPP Notes” and each promissory note individually as a “PPP Note”. The PPP was established under the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and is administered by the U.S. Small Business Administration (“SBA”). The loans evidenced by the Construction Notes are being made through Bremer Bank (“Bremer”) as lender, and the loans evidenced by the Healthcare Notes are being made through Sterling as lender. The loans evidenced by the PPP Notes (the “PPP Loans”) have two-year terms and bear interest at a rate of 1.00% per annum. Monthly principal and interest payments under the PPP Loans are deferred for six months. Beginning seven months from the date of a PPP Note, unless fully forgiven prior thereto, the applicable borrower will pay to its lender thereunder a monthly principal and interest payments. The PPP Loans may be prepaid at any time prior to maturity with no prepayment penalties. The Construction Notes mature on April 30, 2022, and the Healthcare Notes mature two years from the date the loans under the Healthcare Notes are disbursed. Loans under the Company Note and the DIS Note were disbursed on May 12, 2020, and the loans under the DMS Health Note and DMS Imaging Note were disbursed on May 13, 2020. The PPP Notes contain customary events of default relating to, among other things, payment defaults, making materially false and misleading representations to the SBA or lender, or breaching the terms of the applicable PPP Loan documents. Upon an event of default under a PPP Note, the lender thereunder may, among other things, require immediate payment of all amounts owing under the applicable PPP Note, collect all amounts owing from the applicable borrower, or file suit and obtain judgment.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements included in this Form 10-Q have been prepared in accordance with the U.S. Securities and Exchange Commission (the “SEC”) instructions for Quarterly Reports on Form 10-Q. Accordingly, the condensed consolidated financial statements are unaudited and do not contain all the information required by U.S. generally accepted accounting principles (“GAAP”) to be included in a full set of financial statements. The unaudited condensed consolidated balance sheet at December 31, 2019 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for a complete set of financial statements. The audited consolidated financial statements for our fiscal year ended December 31, 2019, filed with the SEC on Form 10-K on March 9, 2020, include a summary of our significant accounting policies and should be read in conjunction with this Form 10-Q. In the opinion of management, all material adjustments necessary to present fairly the results of operations, cash flows, and balance sheets for such periods have been included in this Form 10-Q. All such adjustments are of a normal recurring nature. The results of operations for interim periods are not necessarily indicative of the results of operations for the entire year.
Use of Estimates	Use of Estimates Preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results could differ from management’s estimates.
Lessee Accounting	Lessee Accounting We determine if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, operating lease liabilities, and operating lease liabilities, net of current portion in our condensed consolidated balance sheets. Finance leases are included in property and equipment, other current liabilities, and other long-term liabilities in our condensed consolidated balance sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We use the implicit discount rate when readily determinable; however, as most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease valuation may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company elected to not separate lease and non-lease components of its operating leases in which it is the lessee and lessor. Additionally, The Company elected not to recognize right-of use assets and leases liabilities that arise from short-term leases of twelve months or less.
Lessor Accounting	Lessor Accounting We determine lease classification at the commencement date. Leases not classified as sales-type or direct financing leases are classified as operating leases. The primary accounting criteria we use for lease classification are (a) review to determine if the lease transfers ownership of the underlying asset to the lessee by the end of the lease term, (b) review to determine if the lease grants the lessee a purchase option that the lessee is reasonably certain to exercise, (c) determine, using a seventy-five percent or more threshold, if the lease term is for a major part of the remaining economic life of the underlying asset (however, we do not use this classification criterion when the lease commencement date falls within the last 25 percent of the total economic life of the underlying asset) and (d) determine, using a ninety percent or more threshold, if the present value of the sum of the lease payments and any residual value guarantees equal or exceeds substantially all of the fair value of the underlying asset. We do not lease equipment of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. Each of the Company’s leases is classified as an operating lease. The Company elected the operating lease practical expedient for its leases to not separate non-lease components of regular maintenance services from associated lease components. This practical expedient is available when both of the following are met: (i) the timing and pattern of transfer of the non-lease components and associated lease component are the same and (ii) the lease component, if accounted for separately, would be classified as an operating lease. Property taxes paid by the lessor that are reimbursed by the lessee are considered to be lessor costs of owning the asset, and are recorded gross with revenue included in other non-interest income and expense recorded in operating expenses. The Company selected a lessor accounting policy election to exclude from revenue and expenses sales taxes and other similar taxes assessed by a governmental authority on lease revenue-producing transactions and collected by the lessor from a lessee. Operating lease equipment is carried at cost less accumulated depreciation. Operating lease equipment is depreciated to its estimated residual value using the straight-line method over the lease term or estimated useful life of the asset. Rental revenue on operating leases is recognized on a straight-line basis over the lease term unless collectability is not probable. In these cases rental revenue is recognized as payments are received.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract , which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The Company early adopted ASU 2018-15 beginning January 1, 2019, and applied the guidance prospectively to the implementation costs incurred in its NetSuite ERP implementation. As of March 31, 2020, the Company has capitalized $0.5 million of implementation costs. New Accounting Standards To Be Adopted
Revenue	Healthcare Product and Product-Related Revenues and Services Revenue Healthcare Product and product-related revenue are generated from the sale of gamma cameras and post-warranty maintenance service contracts within our Diagnostic Imaging reportable segment. Healthcare Imaging services revenue are generated from providing diagnostic imaging services to customers within our Diagnostic Services and Mobile Healthcare reportable segments. Services revenue also includes lease income generated from interim rentals of imaging systems to our customers. Building and Construction Building and Construction revenue are generated from selling modular buildings for both single-family residential homes and larger commercial building projects from KBS, Builders, Inc. (“KBS”), and selling structural wall panels, permanent wood foundation systems and other engineered wood products from EdgeBuilder and GlenBrook (“Glenbrook” and together with EdgeBuilder, “EBGL”). Real Estate and Investments Star Real Estate Holdings USA, Inc. (“SRE”) generates revenue from lease of commercial properties and equipment and Lone Star Value Management, LLC (“LSVM”), a Connecticut based exempt reporting advisor, provides services that include investment advisory services, and the servicing of pooled investment vehicles. Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. Taxes collected from customers, which are subsequently remitted to governmental authorities, are excluded from revenue. The majority of our contracts have a single performance obligation, as we provide a series of distinct services that are substantially the same and are transferred with the same pattern to the customer. For contracts with multiple performance obligations, we allocate the total transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. We use an observable price to determine the stand-alone selling price for separate performance obligations or a cost plus margin approach when one is not available. For bill and hold sales, we determine when the customer obtains control of the product on a case-by-case basis to determine the amount of revenue to recognize each period. Nature of Goods and Services Mobile Imaging Within our Diagnostic Services and Mobile Healthcare reportable segments, our sales are derived from providing services and materials to our customers, primarily physician practices and hospitals, that allow them to perform diagnostic imaging services at their site. We typically bundle our services in providing staffing, our imaging systems, licensing, radiopharmaceuticals, and supplies depending on our customers’ needs. Our contracts with customers are typically entered into annually and are billed on a fixed rate per-day or per-scan basis, depending on terms of the contract. For the majority of these contracts, the Company has the right to invoice the customer in an amount that directly corresponds with the value to the customer of the Company’s performance to date. The Company uses the practical expedient to recognize revenue corresponding with amounts we have the right to invoice for services performed. Camera Within our Diagnostic Imaging segment, camera revenues are generated from the sale of internally developed solid-state gamma camera imaging systems. We recognize revenue upon transfer of control to the customer, which is generally upon delivery and acceptance. We also provide installation services and training on cameras we sell, primarily in the United States. Installation and initial training is generally performed shortly after delivery. The Company recognizes revenues for installation and training over time as the customer receives and consumes benefits provided as the Company performs the installation services. Our sale of imaging systems includes a one Camera Support Within our Diagnostic Imaging segment, camera support revenue is derived from the sale of separately-priced extended maintenance contracts to camera owners, training, and the sale of parts to customers that do not have an extended warranty. Our separately priced service contracts range from 12 to 48 months. Service contracts are usually billed at the beginning of the contract period or at periodic intervals (e.g., monthly, quarterly, or annually) and revenue is recognized ratably over the term of the agreement. Services and training revenues are recognized in the period the services and training are performed. Revenue for sales of parts are recognized when the parts are delivered to the customer and control is transferred. Lease Income Within our Mobile Healthcare segment, we also generate income from interim rentals of our imaging systems to customers that are in the midst of new construction or refurbishing their current facilities. Rental contracts are structured as either a weekly or monthly payment arrangement and are accounted for as operating leases. Within our Building and Construction segment, KBS subleased the manufacturing building located in Waterford, Maine to North Country Steel Inc., a Maine corporation with an initial 5 year term rental agreement, commenced on September 6, 2019. The rental agreement is structured with a monthly payment arrangement and is accounted for as operating lease. Building and Construction Within the building and construction segment, ATRM, through its wholly-owned subsidiaries KBS Builders, Inc. (“KBS”), EdgeBuilder, Inc. (“EdgeBuilder”), and Glenbrook Building Supply, Inc. (“Glenbrook” and together with EdgeBuilder, “EBGL”), services residential and commercial construction projects by manufacturing modular housing units and other products and supplies general contractors with building materials. KBS manufactures modular buildings for both single-family residential homes and larger, commercial building projects. EdgeBuilder manufactures structural wall panels, permanent wood foundation systems and other engineered wood products, and GlenBrook is a retail supplier of lumber and other building supplies. Real Estate and Investments Within our real estate and investment division, Star Real Estate Holdings USA, Inc. (“SRE”), generates income from the lease of commercial properties and equipment, and Lone Star Value Management, LLC (“LSVM”), a Connecticut based exempt reporting advisor, provides services that include investment advisory services, and the servicing of pooled investment vehicles. Deferred Revenues We record deferred revenues when cash payments are received or due in advance of our performance, including amounts that are refundable. We have determined our contracts do not include a significant financing component. The majority of our deferred revenue relates to payments received on camera support post-warranty service contracts, which are billed at the beginning of the annual contract period or at periodic intervals (e.g.,monthly, quarterly, or annually). The Company has elected to use the practical expedient under ASC 606 to exclude disclosures of unsatisfied remaining performance obligations for (i) contracts having an original expected length of one year or less or (ii) contracts for which the practical expedient has been applied to recognize revenue at the amount for which it has a right to invoice. Contract Costs We recognize an asset for the incremental costs of obtaining a contract with a customer if we expect the benefit of those costs to be longer than one year. The Company applies a practical expedient to expense costs as incurred for costs to obtain a contract when the amortization period would have been one year or less. These costs mainly include the Company’s internal sales commissions; under the terms of these programs these are generally earned and the costs are recognized at the time the revenue is recognized.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables present our revenues for the three months ended March 31, 2020 and 2019, disaggregated by major source (in thousands): Three Months Ended March 31, 2020 Diagnostic Services Diagnostic Imaging Mobile Healthcare Building and Construction Real Estate and Investments Total Major Goods/Service Lines Mobile Imaging $ 10,602 $ — $ 7,261 $ — $ — $ 17,863 Camera — 1,339 — — — 1,339 Camera Support — 1,522 — — — 1,522 Healthcare Revenue from Contracts with Customers 10,602 2,861 7,261 — — 20,724 Lease Income 212 — 2,406 84 — 2,702 Building and Construction — — — 5,400 — 5,400 Real Estate and Investments — — — — 31 31 Total Revenues $ 10,814 $ 2,861 $ 9,667 $ 5,484 $ 31 $ 28,857 Timing of Revenue Recognition Services and goods transferred over time $ 10,814 $ 1,487 $ 9,574 $ 84 $ — $ 21,959 Services and goods transferred at a point in time — 1,374 93 5,400 31 6,898 Total Revenues $ 10,814 $ 2,861 $ 9,667 $ 5,484 $ 31 $ 28,857 Three Months Ended March 31, 2019 Diagnostic Services Diagnostic Imaging Mobile Healthcare Total Major Goods/Service Lines Mobile Imaging $ 11,585 $ — $ 7,494 $ 19,079 Camera — 804 — 804 Camera Support — 1,719 — 1,719 Healthcare Revenue from Contracts with Customers 11,585 2,523 7,494 21,602 Lease Income 141 — 2,169 2,310 Building and construction — — — — Real Estate and Investments — — — — Total Revenues $ 11,726 $ 2,523 $ 9,663 $ 23,912 Timing of Revenue Recognition Services and goods transferred over time $ 11,726 $ 1,551 $ 9,525 $ 22,802 Services and goods transferred at a point in time — 972 138 1,110 Total Revenues $ 11,726 $ 2,523 $ 9,663 $ 23,912
Changes in Deferred Revenue	Changes in the deferred revenues for three months ended March 31, 2020, is as follows (in thousands): Balance at December 31, 2019 $ 1,801 Revenue recognized that was included in balance at beginning of the year (778) Deferred revenue, net, related to contracts entered into during the year 623 Balance at March 31, 2020 $ 1,646

Basic and Diluted Net Income _2

Basic and Diluted Net Income (Loss) Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract]
Reconciliation of Shares Used to Compute Basic and Diluted Net Income (Loss) Per Share	The following table sets forth the reconciliation of shares used to compute basic and diluted net (loss) income per share for the periods indicated (in thousands): Three Months Ended March 31, 2020 2019 Numerator: Net loss $ (2,953) $ (1,657) Deemed dividend on Series A redeemable preferred stock (484) — Net loss attributable to common shareholders $ (3,437) $ (1,657) Denominator: Weighted average shares outstanding - basic 2,055 2,028 Dilutive potential common shares: Stock options — — Restricted stock units — — Weighted average shares outstanding - diluted 2,055 2,028 Net loss per common share - basic and diluted Net loss per share, continuing operations $ (1.44) $ (0.82) Preferred dividends per share (0.23) — Net loss per common share—basic and diluted $ (1.67) $ (0.82)
Schedule of Antidilutive Securities Excluded from Computation of Net Income (Loss) Per Share	The computation of diluted earnings per share excludes stock options and stock units that are anti-dilutive. The following common stock equivalents were anti-dilutive (in thousands): Three Months Ended March 31, 2020 2019 Stock options 54 56 Restricted stock units 13 24 Total 67 80

Merger (Tables)

Merger (Tables)	3 Months Ended
	Mar. 31, 2020
Business Combinations [Abstract]
Schedule of Business Acquisitions	The acquisition-date fair value of the consideration transferred in connection with the ATRM Merger approximately $17.5 million, which consisted of the following (in thousands): Digirad Series A Cumulative Perpetual Preferred Stock (1,615,637 shares) $ 16,156 Settlement of pre-existing note receivable between DRAD and ATRM 296 Fair value of pre-existing joint venture settlement between DRAD and ATRM 1,000 Estimated purchase price $ 17,452 The amounts of revenue and earnings of ATRM included in the Company’s condensed consolidated statement of operations from the ATRM Acquisition Date to the period ending March 31, 2020 are as follows (in thousands): Revenue $ 5,515 Net loss $ (1,502)
Schedule of Recognized Assets Acquired and Liabilities Assumed	The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed at the ATRM Acquisition Date (in thousands): (in thousands) As originally reported Measurement period adjustments As adjusted Cash and cash equivalents $ — $ — $ — Accounts receivable, net 2,831 — 2,831 Inventory, net 1,609 — 1,609 Other current assets 481 252 733 Property and equipment, net 840 — 840 Operating Lease Right-of-use assets, net 495 — 495 Accounts payable and other accrued liabilities (10,851) — (10,851) Debt and notes payable (5,144) — (5,144) Lease liability (499) — (499) Deferred income taxes — (265) (265) Net assets acquired (liabilities assumed) (10,238) (13) (10,251) Goodwill 8,230 3 8,233 Intangibles 19,460 10 19,470 Estimated purchase price $ 17,452 $ — $ 17,452
Schedule of Intangible Assets Acquired	The $19.5 million of identified intangible assets was allocated as follows (in thousands): Fair Value Useful Life Trade Names $ 5,540 15 Customer Relationships - Modular Buildings 7,830 10 Customer Relationships - Wood Products 5,670 10 Backlog 430 1 Fair value of identified intangible assets $ 19,470
Schedule of Pro Forma Information	The following represents the pro forma condensed consolidated statement of operations as if ATRM had been included in the consolidated results of the Company for the three months ending March 31, 2020 and 2019 (in thousands): Three Months Ended March 31, 2020 2019 Revenue $ 28,857 $ 31,247 Net loss $ (2,844) $ (2,892)

Supplementary Balance Sheet I_2

Supplementary Balance Sheet Information (Tables)	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory	The components of inventories are as follows (in thousands): March 31, December 31, Raw materials $ 3,855 $ 4,309 Work-in-process 2,723 2,710 Finished goods 352 461 Total inventories 6,930 7,480 Less reserve for excess and obsolete inventories (313) (383) Total inventories, net $ 6,617 $ 7,097
Schedule of Property and Equipment	Property and equipment consist of the following (in thousands): March 31, December 31, 2019 Land $ 995 $ 995 Buildings and leasehold improvements 5,451 5,451 Machinery and equipment 57,388 57,417 Total property and equipment 63,834 63,863 Less accumulated depreciation (43,072) (41,725) Total property and equipment, net $ 20,762 $ 22,138

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Schedule of Lease Cost and Other Information	The components of lease expense are as follows (in thousands): Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Operating lease cost $ 556 $ 326 Finance lease cost: Amortization of finance lease assets $ 183 $ 53 Interest on finance lease liabilities 34 33 Total finance lease cost $ 217 $ 86 Supplemental cash flow information related to leases was as follows (in thousands): Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 545 $ 287 Operating cash flows from finance leases $ 34 $ 33 Financing cash flows from finance leases $ 229 $ 184 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 1,161 $ 323 Finance leases $ 25 $ 145
Schedule of Balance Sheet Information	Supplemental balance sheet information related to leases was as follows (in thousands): March 31, December 31, Operating lease right-of-use assets, net $ 5,310 $ 4,827 Operating lease liabilities $ 2,009 $ 1,866 Operating lease liabilities, net of current 3,404 3,073 Total operating lease liabilities $ 5,413 $ 4,939 Finance lease assets $ 4,244 $ 4,541 Finance lease accumulated amortization (1,580) (1,701) Finance lease assets, net $ 2,664 $ 2,840 Finance lease liabilities $ 923 $ 934 Finance lease liabilities, net of current 1,292 1,512 Total finance lease liabilities $ 2,215 $ 2,446 Weighted-Average Remaining Lease Term (in years) Operating leases 3.0 2.9 Finance leases 2.5 2.7 Weighted-Average Discount Rate Operating leases 5.32 % 5.45 % Finance leases 6.00 % 6.34 %
Schedule of Future Minimum Finance Lease Payments	The future minimum lease payments due under both non-cancelable operating leases and finance leases having initial or remaining lease terms in excess of one year as of March 31, 2020 were as follows (in thousands): Operating Finance 2020 (excludes the three-months ended March 31, 2020) $ 1,722 $ 770 2021 1,854 989 2022 1,106 466 2023 673 151 2024 and thereafter 552 7 Total future minimum lease payments $ 5,907 $ 2,383 Less amounts representing interest 494 168 Present value of lease obligations $ 5,413 $ 2,215
Schedule of Future Minimum Operating Lease Payments, Lessee	The future minimum lease payments due under both non-cancelable operating leases and finance leases having initial or remaining lease terms in excess of one year as of March 31, 2020 were as follows (in thousands): Operating Finance 2020 (excludes the three-months ended March 31, 2020) $ 1,722 $ 770 2021 1,854 989 2022 1,106 466 2023 673 151 2024 and thereafter 552 7 Total future minimum lease payments $ 5,907 $ 2,383 Less amounts representing interest 494 168 Present value of lease obligations $ 5,413 $ 2,215

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Financial Assets Measured at Fair Value on a Recurring Basis	The following table presents information about our financial assets that are measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques we utilize to determine such fair value at March 31, 2020 and December 31, 2019 (in thousands). Fair Value as of March 31, 2020 Level 1 Level 2 Level 3 Total Equity securities $ 18 $ 26 $ — $ 44 Total $ 18 $ 26 $ — $ 44 Fair Value as of December 31, 2019 Level 1 Level 2 Level 3 Total Equity securities $ 26 $ 43 $ — $ 69 Lumber derivative contracts 10 — — 10 Total $ 36 $ 43 $ — $ 79

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Summary of Long-Term Debt	A summary of the Company’s revolving credit facilities and related party notes are as follows (in thousands): March 31, 2020 December 31, 2019 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate Revolving Credit Facility - Gerber KBS $ 600 6.00 % $ 1,111 7.50 % Revolving Credit Facility - Premier — — % 2,925 6.25 % Total Short Term Revolving Credit Facility $ 600 6.00 % $ 4,036 6.59 % Revolving Credit Facility - SNB $ 15,321 3.49 % $ 17,038 4.26 % Revolving Credit Facility - Gerber EBGL 1,279 6.00 % — — % Total Long Term Revolving Credit Facility $ 16,600 3.68 % $ 17,038 4.26 % LSV Co-Invest I Promissory Note (“January Note”) $ 631 12.00 % $ 595 12.00 % LSV Co-Invest I Promissory Note (“June Note”) 1,086 12.00 % 1,023 12.00 % LSVM Note 317 12.00 % 302 12.00 % Total Notes Payable To Related Parties $ 2,034 12.00 % $ 1,920 12.00 % The following table presents the Star and Premier term loans balance net of unamortized debt issuance costs as of March 31, 2020 (in thousands): March 31, 2020 Amount Gerber - Star Term Loan $ 2,350 Premier - Term Loan 974 Total Principal 3,324 Unamortized debt issuance costs (538) Total $ 2,786
Schedule of Short-term Debt	A summary of the Company’s revolving credit facilities and related party notes are as follows (in thousands): March 31, 2020 December 31, 2019 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate Revolving Credit Facility - Gerber KBS $ 600 6.00 % $ 1,111 7.50 % Revolving Credit Facility - Premier — — % 2,925 6.25 % Total Short Term Revolving Credit Facility $ 600 6.00 % $ 4,036 6.59 % Revolving Credit Facility - SNB $ 15,321 3.49 % $ 17,038 4.26 % Revolving Credit Facility - Gerber EBGL 1,279 6.00 % — — % Total Long Term Revolving Credit Facility $ 16,600 3.68 % $ 17,038 4.26 % LSV Co-Invest I Promissory Note (“January Note”) $ 631 12.00 % $ 595 12.00 % LSV Co-Invest I Promissory Note (“June Note”) 1,086 12.00 % 1,023 12.00 % LSVM Note 317 12.00 % 302 12.00 % Total Notes Payable To Related Parties $ 2,034 12.00 % $ 1,920 12.00 %

Segments (Tables)

Segments (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Segment information is as follows (in thousands): Three Months Ended March 31, 2020 2019 Revenue by segment: Diagnostic Services $ 10,814 $ 11,726 Diagnostic Imaging 2,861 2,523 Mobile Healthcare 9,667 9,663 Building and Construction 5,484 — Real Estate and Investments 189 — Corporate, eliminations and other (158) — Consolidated revenue $ 28,857 $ 23,912 Gross profit by segment: Diagnostic Services $ 2,005 $ 2,581 Diagnostic Imaging 869 786 Mobile Healthcare 1,198 614 Building and Construction 403 — Real Estate and Investments 124 — Corporate, eliminations and other (158) — Consolidated gross profit $ 4,441 $ 3,981 (Loss) income from operations by segment: Diagnostic Services $ 1,024 $ 1,736 Diagnostic Imaging 521 343 Mobile Healthcare 177 (623) Building and Construction (859) — Real Estate and Investments 106 — Corporate, eliminations and other (158) — Unallocated corporate and other expenses (3,415) (2,591) Consolidated loss from continuing operations $ (2,604) $ (1,135) Depreciation and amortization by segment: Diagnostic Services $ 329 $ 304 Diagnostic Imaging 63 78 Mobile Healthcare 1,378 1,427 Building and Construction 572 — Real Estate and Investments 65 — Total depreciation and amortization $ 2,407 $ 1,809

Temporary Equity (Tables)

Temporary Equity (Tables)	3 Months Ended
	Mar. 31, 2020
Temporary Equity Disclosure [Abstract]
Temporary Equity	A roll forward of the balance of Company Preferred Stock for the year ended March 31, 2020 is as follows (in thousands): Balance at December 31, 2019 $ 19,602 Deemed dividend on redeemable convertible preferred stock 484 Balance at March 31, 2020 $ 20,086

Basis of Presentation - Narrati

Basis of Presentation - Narrative (Details)	Sep. 10, 2019USD ($)$ / sharesshares	Sep. 09, 2019	Jun. 04, 2019	May 01, 2019	Mar. 31, 2020USD ($)$ / sharesshares	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)shares	May 31, 2019shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Common stock shares authorized after reversed stock split (in shares) | shares					30,000,000		30,000,000	30,000,000
Reverse stock split			0.1
Series A Cumulative Perpetual Preferred Stock, dividend rate	0.100				0.10
Series A Cumulative Perpetual Preferred Stock, par value (USD per share)	$ 0.0001
Preferred stock, liquidation preference per share (USD per share) | $ / shares					$ 10
Capitalized implementation costs					$ 500,000
(Loss) income from operations by segment					(2,604,000)	$ (1,135,000)
Accumulated deficit					(121,482,000)	(118,500,000)	$ (118,529,000)
Net cash provided by (used in) operating activities					623,000	$ (2,185,000)
Short-term debt and current portion of long-term debt					1,211,000		4,036,000
Payable to related parties					2,034,000		1,920,000
Derivative liability							$ 10,000
ATRM Holdings, Inc.
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shares issued in business acquisition (In shares) | shares	1,615,637
Series A Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Digirad shares issued per ATRM share (in shares)		0.03
Series A Preferred Stock | Put Option
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Derivative liability					$ 1,000,000
Series A Preferred Stock | ATRM Holdings, Inc.
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Digirad shares issued per ATRM share (in shares)	0.03
Shares issued in business acquisition (In shares) | shares	1,615,637				1,615,637
Series B Preferred Stock | ATRM Holdings, Inc.
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Digirad shares issued per ATRM share (in shares)	2.5	2.5
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reverse stock split				0.2
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reverse stock split				0.1
ATRM Holdings, Inc.
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred stock, dividend rate percentage	10.00%
Preferred stock, par value (in usd per share) | $ / shares	$ 0.001

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Lease Income	$ 2,702	$ 2,310
Total revenues	28,857	23,912
Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	21,959	22,802
Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	6,898	1,110
Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	17,863	19,079
Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,339	804
Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,522	1,719
Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	20,724	21,602
Total revenues	23,342	23,912
Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,400	0
Total revenues	5,484	0
Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	31	0
Total revenues	31	0
Diagnostic Services
Disaggregation of Revenue [Line Items]
Lease Income	212	141
Total revenues	10,814	11,726
Diagnostic Services | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	10,814	11,726
Diagnostic Services | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Services | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	10,602	11,585
Diagnostic Services | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Services | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Services | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	10,602	11,585
Diagnostic Services | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Services | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Imaging
Disaggregation of Revenue [Line Items]
Lease Income	0	0
Total revenues	2,861	2,523
Diagnostic Imaging | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,487	1,551
Diagnostic Imaging | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,374	972
Diagnostic Imaging | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Imaging | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,339	804
Diagnostic Imaging | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,522	1,719
Diagnostic Imaging | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,861	2,523
Diagnostic Imaging | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Diagnostic Imaging | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Mobile Healthcare
Disaggregation of Revenue [Line Items]
Lease Income	2,406	2,169
Total revenues	9,667	9,663
Mobile Healthcare | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	9,574	9,525
Mobile Healthcare | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	93	138
Mobile Healthcare | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,261	7,494
Mobile Healthcare | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Mobile Healthcare | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Mobile Healthcare | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,261	7,494
Mobile Healthcare | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Mobile Healthcare | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	$ 0
Building and Construction
Disaggregation of Revenue [Line Items]
Lease Income	84
Total revenues	5,484
Building and Construction | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	84
Building and Construction | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,400
Building and Construction | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Building and Construction | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Building and Construction | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Building and Construction | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Building and Construction | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,400
Building and Construction | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments
Disaggregation of Revenue [Line Items]
Lease Income	0
Total revenues	31
Real Estate and Investments | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	31
Real Estate and Investments | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Real Estate and Investments | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 31

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Thousands	Sep. 06, 2019	Mar. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Non-current deferred revenue		$ 20	$ 15
Camera
Disaggregation of Revenue [Line Items]
Warranty term		1 year
Diagnostic Imaging | Camera Support | Minimum
Disaggregation of Revenue [Line Items]
Service contract term		12 months
Diagnostic Imaging | Camera Support | Maximum
Disaggregation of Revenue [Line Items]
Service contract term		48 months
North Country Steel Inc.
Disaggregation of Revenue [Line Items]
Lease period	5 years

Revenue - Schedule of Changes i

Revenue - Schedule of Changes in Deferred Revenue (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Change In Contract With Customer, Liability [Roll Forward]
Balance at December 31, 2019	$ 1,801
Revenue recognized that was included in balance at beginning of the year	(778)
Deferred revenue, net, related to contracts entered into during the year	623
Balance at March 31, 2020	$ 1,646

Basic and Diluted Net Income _3

Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (2,953)	$ (1,657)
Deemed dividend on Series A redeemable preferred stock	(484)	0
Net loss attributable to common shareholders	$ (3,437)	$ (1,657)
Denominator:
Weighted average shares outstanding - basic (in shares)	2,055	2,028
Net loss per share, continuing operations (in usd per share)	$ (1.44)	$ (0.82)
Preferred dividends per share (in usd per share)	(0.23)	0
Net loss per common share—basic and diluted (in usd per share)	$ (1.67)	$ (0.82)
Stock options
Denominator:
Dilutive potential common shares:	0	0
Restricted stock units
Denominator:
Dilutive potential common shares:	0	0

Basic and Diluted Net Income _4

Basic and Diluted Net Income (Loss) Per Share - Anti-dilutive Shares (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	67	80
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	54	56
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	13	24

Merger - Narrative (Details)

Merger - Narrative (Details)	Sep. 10, 2019USD ($)$ / sharesshares	Sep. 09, 2019	Mar. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Series A Cumulative Perpetual Preferred Stock, dividend rate	0.100		0.10
Series A Cumulative Perpetual Preferred Stock, par value (USD per share)	$ 0.0001
Goodwill			$ 9,978,000	$ 9,978,000
ATRM Holdings, Inc.
Business Acquisition [Line Items]
Shares issued in business acquisition (In shares) | shares	1,615,637
Acquisition date consideration fair value	$ 17,452,000
Share price (in dollars per share) | $ / shares	$ 10
Intangibles assets acquired	$ 19,470,000
Goodwill	$ 8,233,000
Acquisition related costs				$ 2,300,000
Series A Preferred Stock
Business Acquisition [Line Items]
Digirad shares issued per ATRM share (in shares)		0.03
Series A Preferred Stock | ATRM Holdings, Inc.
Business Acquisition [Line Items]
Digirad shares issued per ATRM share (in shares)	0.03
Shares issued in business acquisition (In shares) | shares	1,615,637		1,615,637
Series B Preferred Stock | ATRM Holdings, Inc.
Business Acquisition [Line Items]
Digirad shares issued per ATRM share (in shares)	2.5	2.5
ATRM Holdings, Inc.
Business Acquisition [Line Items]
Preferred stock, dividend rate percentage	10.00%
Preferred stock, par value (in usd per share) | $ / shares	$ 0.001

Merger - Schedule of Considerat

Merger - Schedule of Consideration Transferred (Details) - ATRM Holdings, Inc. $ in Thousands	Sep. 10, 2019USD ($)
Business Acquisition [Line Items]
Digirad Series A Cumulative Perpetual Preferred Stock (1,615,637 shares)	$ 16,156
Settlement of pre-existing note receivable between DRAD and ATRM	296
Fair value of pre-existing joint venture settlement between DRAD and ATRM	1,000
Estimated purchase price	$ 17,452

Merger - Summary of Recognized

Merger - Summary of Recognized Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Sep. 10, 2019
Business Acquisition [Line Items]
Goodwill	$ 9,978	$ 9,978
ATRM Holdings, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents			$ 0
Accounts receivable, net			2,831
Inventory, net			1,609
Other current assets			733
Property and equipment, net			840
Operating Lease Right-of-use assets, net			495
Accounts payable and other accrued liabilities			(10,851)
Debt and notes payable			(5,144)
Lease liability			(499)
Deferred income taxes			(265)
Net assets acquired (liabilities assumed)			(10,251)
Goodwill			8,233
Intangibles			19,470
Estimated purchase price			17,452
ATRM Holdings, Inc. | As originally reported
Business Acquisition [Line Items]
Cash and cash equivalents			0
Accounts receivable, net			2,831
Inventory, net			1,609
Other current assets			481
Property and equipment, net			840
Operating Lease Right-of-use assets, net			495
Accounts payable and other accrued liabilities			(10,851)
Debt and notes payable			(5,144)
Lease liability			(499)
Deferred income taxes			0
Net assets acquired (liabilities assumed)			(10,238)
Goodwill			8,230
Intangibles			19,460
Estimated purchase price			17,452
ATRM Holdings, Inc. | Measurement period adjustments
Business Acquisition [Line Items]
Other current assets			252
Deferred income taxes			(265)
Net assets acquired (liabilities assumed)			(13)
Goodwill			3
Intangibles			$ 10

Merger - Schedule of Intangible

Merger - Schedule of Intangible Assets Acquired (Details) - ATRM Holdings, Inc. $ in Thousands	Sep. 10, 2019USD ($)
Business Acquisition [Line Items]
Intangibles	$ 19,470
Trade Names
Business Acquisition [Line Items]
Intangibles	$ 5,540
Useful Life (years)	15 years
Customer Relationships - Modular Buildings
Business Acquisition [Line Items]
Intangibles	$ 7,830
Useful Life (years)	10 years
Customer Relationships - Wood Products
Business Acquisition [Line Items]
Intangibles	$ 5,670
Useful Life (years)	10 years
Backlog
Business Acquisition [Line Items]
Intangibles	$ 430
Useful Life (years)	1 year

Merger - Schedule of Revenue an

Merger - Schedule of Revenue and Net Loss of ATRM (Details) - ATRM Holdings, Inc. $ in Thousands	7 Months Ended
	Mar. 31, 2020USD ($)
Business Acquisition [Line Items]
Revenue	$ 5,515
Net loss	$ (1,502)

Merger - Schedule of Pro Forma

Merger - Schedule of Pro Forma Information (Details) - ATRM Holdings, Inc. - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Business Acquisition [Line Items]
Revenue	$ 28,857	$ 31,247
Net loss	$ (2,844)	$ (2,892)

Supplementary Balance Sheet I_3

Supplementary Balance Sheet Information - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 3,855	$ 4,309
Work-in-process	2,723	2,710
Finished goods	352	461
Total inventories	6,930	7,480
Less reserve for excess and obsolete inventories	(313)	(383)
Total inventories, net	$ 6,617	$ 7,097

Supplementary Balance Sheet I_4

Supplementary Balance Sheet Information - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 63,834	$ 63,863
Less accumulated depreciation	(43,072)	(41,725)
Total property and equipment, net	20,762	22,138
Land
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	995	995
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	5,451	5,451
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 57,388	$ 57,417

Supplementary Balance Sheet I_5

Supplementary Balance Sheet Information - Narrative (Details) $ in Thousands	Sep. 06, 2019	Apr. 30, 2019USD ($)property_purchasedproperty	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)
Sale Leaseback Transaction [Line Items]
Manufacturing facilities purchased		3
Purchase of plants | $		$ 5,200	$ 158	$ 387
KBS Builders
Sale Leaseback Transaction [Line Items]
Manufacturing facilities purchased		2
Number of properties leasedback | property		3
North Country Steel Inc.
Sale Leaseback Transaction [Line Items]
Lease period	5 years

Leases - Narrative (Details)

Leases - Narrative (Details)	3 Months Ended
	Mar. 31, 2020
Lessee, Lease, Description [Line Items]
Option to terminate period	1 year
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	7 years

Leases - Schedule of Lease Expe

Leases - Schedule of Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 556	$ 326
Finance lease cost:
Amortization of finance lease assets	183	53
Interest on finance lease liabilities	34	33
Total finance lease cost	$ 217	$ 86

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	May 08, 2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 545	$ 287
Operating cash flows from finance leases	34	33
Financing cash flows from finance leases	229	184
Right-of-use assets obtained in exchange for lease obligations
Right-of-use assets obtained in exchange for lease obligations, operating lease	1,161	323
Right-of-use assets obtained in exchange for lease obligations, finance leases	$ 25	$ 145
Entity Common Stock, Outstanding (in shares)			2,055,158

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets, net	$ 5,310	$ 4,827
Operating lease liabilities	2,009	1,866
Operating lease liabilities, net of current portion	3,404	3,073
Total operating lease liabilities	5,413	4,939
Finance lease assets	4,244	4,541
Finance lease accumulated amortization	(1,580)	(1,701)
Finance lease assets, net	2,664	2,840
Finance lease liabilities	923	934
Finance lease liabilities, net of current	1,292	1,512
Total finance lease liabilities	$ 2,215	$ 2,446
Operating lease, weighted-Average Remaining Lease Term (in years)	3 years	2 years 10 months 24 days
Financing leases, weighted-Average Remaining Lease Term (in years)	2 years 6 months	2 years 8 months 12 days
Operating leases, weighted-Average Discount Rate	5.32%	5.45%
Financing leases, weighted-Average Discount Rate	6.00%	6.34%

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments, Lessee (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020 (excludes the three-months ended March 31, 2020)	$ 1,722
2021	1,854
2022	1,106
2023	673
2024 and thereafter	552
Total future minimum lease payments	5,907
Less amounts representing interest	494
Present value of lease obligations	5,413	$ 4,939
Finance Lease, Liability, Payment, Due [Abstract]
2020 (excludes the three-months ended March 31, 2020)	770
2021	989
2022	466
2023	151
2024 and thereafter	7
Total future minimum lease payments	2,383
Less amounts representing interest	168
Present value of lease obligations	$ 2,215	$ 2,446

Financial Instruments - Financi

Financial Instruments - Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 44	$ 69
Lumber derivative contracts		10
Total	44	79
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	18	26
Lumber derivative contracts		10
Total	18	36
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	26	43
Lumber derivative contracts		0
Total	26	43
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Lumber derivative contracts		0
Total	$ 0	$ 0

Financial Instruments - Narrati

Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Equity securities, unrealized loss	$ 26
Equity securities, unrealized gain		$ 28

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total Short Term Revolving Credit Facility	$ 1,211,000	$ 4,036,000
Total Long Term Revolving Credit Facility	18,775,000	17,038,000
Total Notes Payable To Related Parties	$ 2,034,000	$ 1,920,000
Revolving Credit Facility - Gerber KBS
Debt Instrument [Line Items]
Weighted-Average Interest Rate	6.00%	7.50%
Revolving Credit Facility - Premier
Debt Instrument [Line Items]
Weighted-Average Interest Rate	0.00%	6.25%
Total Short Term Revolving Credit Facility
Debt Instrument [Line Items]
Weighted-Average Interest Rate	6.00%	6.59%
Revolving Credit Facility - SNB
Debt Instrument [Line Items]
Weighted-Average Interest Rate	3.49%	4.26%
Revolving Credit Facility - Gerber EBGL
Debt Instrument [Line Items]
Weighted-Average Interest Rate	6.00%	0.00%
Total Long Term Revolving Credit Facility
Debt Instrument [Line Items]
Weighted-Average Interest Rate	3.68%	4.26%
LSV Co-Invest I Promissory Note (“January Note”)
Debt Instrument [Line Items]
Total Notes Payable To Related Parties	$ 631,000	$ 595,000
Weighted-Average Interest Rate	12.00%	12.00%
LSV Co-Invest I Promissory Note (“June Note”)
Debt Instrument [Line Items]
Total Notes Payable To Related Parties	$ 1,086,000	$ 1,023,000
Weighted-Average Interest Rate	12.00%	12.00%
LSVM Note
Debt Instrument [Line Items]
Total Notes Payable To Related Parties	$ 317,000	$ 302,000
Weighted-Average Interest Rate	12.00%	12.00%
Total Notes Payable To Related Parties
Debt Instrument [Line Items]
Total Notes Payable To Related Parties	$ 2,034,000	$ 1,920,000
Weighted-Average Interest Rate	12.00%	12.00%
Revolving Credit Facility | Revolving Credit Facility - Gerber KBS
Debt Instrument [Line Items]
Total Short Term Revolving Credit Facility		$ 1,111,000
Revolving Credit Facility | Revolving Credit Facility - Premier
Debt Instrument [Line Items]
Total Short Term Revolving Credit Facility	$ 0	2,925,000
Revolving Credit Facility | Total Short Term Revolving Credit Facility
Debt Instrument [Line Items]
Total Short Term Revolving Credit Facility	600,000	4,036,000
Revolving Credit Facility | Revolving Credit Facility - SNB
Debt Instrument [Line Items]
Total Long Term Revolving Credit Facility	15,321,000	17,038,000
Revolving Credit Facility | Revolving Credit Facility - Gerber EBGL
Debt Instrument [Line Items]
Total Long Term Revolving Credit Facility	1,279,000	0
Revolving Credit Facility | Total Long Term Revolving Credit Facility
Debt Instrument [Line Items]
Total Long Term Revolving Credit Facility	16,600,000	$ 17,038,000
Revolving Credit Facility | Total Long Term Revolving Credit Facility
Debt Instrument [Line Items]
Total Short Term Revolving Credit Facility	$ 600,000

Debt - Term Loans (Details)

Debt - Term Loans (Details) $ in Thousands	Mar. 31, 2020USD ($)
Debt Instrument [Line Items]
Total Principal	$ 3,324
Unamortized debt issuance costs	(538)
Total	2,786
Star Loan Agreement
Debt Instrument [Line Items]
Total Principal	2,350
Premier Term Loan
Debt Instrument [Line Items]
Total Principal	$ 974

Debt - Digirad Loan Agreements

Debt - Digirad Loan Agreements (Details) - USD ($)	Mar. 29, 2019	Mar. 31, 2020	Mar. 05, 2020	Jan. 30, 2020
Revolving Credit Facility | SNB | Line of Credit | Revolving Credit Facility - SNB
Debt Instrument [Line Items]
Debt term	5 years
Maximum borrowing capacity	$ 20,000,000
Letters of credit (not to exceed)	$ 500,000
Borrowing availability		$ 4,700,000
Revolving Credit Facility | SNB | Line of Credit | Revolving Credit Facility - SNB | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate	2.50%
Additional margin rate	2.25%
Revolving Credit Facility | SNB | Letter of Credit
Debt Instrument [Line Items]
Letters of credit (not to exceed)		$ 100,000
Board of Directors Chairman
Debt Instrument [Line Items]
Obligations under the Limited Guaranty	$ 1,500,000		$ 500,000	$ 2,500,000

Debt - KBS Loan Agreement (Deta

Debt - KBS Loan Agreement (Details) - USD ($)	Feb. 23, 2016	Mar. 31, 2020	Apr. 01, 2020
Debt Instrument [Line Items]
Debt outstanding		$ 2,786,000
KBS Loan Agreement | Subsequent Event
Debt Instrument [Line Items]
Decrease of maximum revolving amount			25.00%
Revolving Credit Facility | Line of Credit | KBS Loan Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 4,000,000
Automatic extension period	1 year
Commitment fee percentage		1.50%
Monthly collateral monitoring fee percentage		0.10%
Collateral amount		$ 300,000
Deposit		$ 200,000
Revolving Credit Facility | Line of Credit | KBS Loan Agreement | Prime Rate
Debt Instrument [Line Items]
Interest rate		2.75%

Debt - EBGL Premier Note (Detai

Debt - EBGL Premier Note (Details) - Revolving Credit Facility - Line of Credit - EBGL Premier Note - USD ($)	12 Months Ended
	Dec. 31, 2019	Jan. 31, 2020	Jun. 30, 2017
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 1,000,000	$ 3,000,000
Interest rate		5.75%
Minimum debt service coverage ratio	100.00%
Debt covenant, audited financial statements delivery period	120 days
Prime Rate
Debt Instrument [Line Items]
Interest rate			1.50%

Debt - Gerber Star and EBGL Loa

Debt - Gerber Star and EBGL Loans (Details)	Jan. 31, 2020USD ($)installment	Mar. 31, 2020USD ($)	Apr. 30, 2020USD ($)	Mar. 05, 2020USD ($)
Debt Instrument [Line Items]
Debt outstanding		$ 2,786,000
Debt outstanding		3,324,000
Star Loan Agreement
Debt Instrument [Line Items]
Debt outstanding		$ 2,350,000
Revolving Credit Facility | Star Loan Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,500,000
Automatic extension period		1 year
Revolving Credit Facility | Star Loan Agreement | Board of Directors Chairman
Debt Instrument [Line Items]
Contractual obligation	2,500,000			$ 500,000
Revolving Credit Facility | Star Loan Agreement | Prime Rate
Debt Instrument [Line Items]
Basis spread		3.50%
Revolving Credit Facility | Star Loan Agreement | KBS Builders
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,000,000
Number of monthly installments | installment	60
Revolving Credit Facility | Star Loan Agreement | Gerber EBGL
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 500,000
Line of credit facility increase	300,000
Revolving Credit Facility | Star Loan Agreement | Gerber EBGL | Prime Rate
Debt Instrument [Line Items]
Basis spread		2.75%
Revolving Credit Facility | Star Loan Agreement | Gerber EBGL | Subsequent Event
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 300,000
Revolving Credit Facility | EBGL Loan Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,000,000
Revolving Credit Facility | EBGL Loan Agreement | Collateral Pledged | LSVI
Debt Instrument [Line Items]
Cash				$ 300,000

Income Tax (Details)

Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 34	$ (8)
Unrecognized tax benefits	2,800
Unrecognized tax benefits that would impact effective tax rate	$ 2,300

Segments (Details)

Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Consolidated revenue	$ 28,857	$ 23,912
Consolidated gross profit	4,441	3,981
(Loss) income from operations by segment	(2,604)	(1,135)
Consolidated loss from continuing operations	(2,604)	(1,135)
Total depreciation and amortization	2,407	1,809
Diagnostic Services
Segment Reporting Information [Line Items]
Consolidated revenue	10,814	11,726
Total depreciation and amortization	329	304
Diagnostic Imaging
Segment Reporting Information [Line Items]
Consolidated revenue	2,861	2,523
Total depreciation and amortization	63	78
Mobile Healthcare
Segment Reporting Information [Line Items]
Consolidated revenue	9,667	9,663
Total depreciation and amortization	1,378	1,427
Building and Construction
Segment Reporting Information [Line Items]
Consolidated revenue	5,484
Total depreciation and amortization	572	0
Real Estate and Investments
Segment Reporting Information [Line Items]
Consolidated revenue	31
Total depreciation and amortization	65	0
Operating Segments | Diagnostic Services
Segment Reporting Information [Line Items]
Consolidated revenue	10,814	11,726
Consolidated gross profit	2,005	2,581
(Loss) income from operations by segment	1,024	1,736
Operating Segments | Diagnostic Imaging
Segment Reporting Information [Line Items]
Consolidated revenue	2,861	2,523
Consolidated gross profit	869	786
(Loss) income from operations by segment	521	343
Operating Segments | Mobile Healthcare
Segment Reporting Information [Line Items]
Consolidated revenue	9,667	9,663
Consolidated gross profit	1,198	614
(Loss) income from operations by segment	177	(623)
Operating Segments | Building and Construction
Segment Reporting Information [Line Items]
Consolidated revenue	5,484	0
Consolidated gross profit	403	0
(Loss) income from operations by segment	(859)	0
Operating Segments | Real Estate and Investments
Segment Reporting Information [Line Items]
Consolidated revenue	189	0
Consolidated gross profit	124	0
(Loss) income from operations by segment	106	0
Corporate And Reconciling Items
Segment Reporting Information [Line Items]
Consolidated revenue	(158)	0
Consolidated gross profit	(158)	0
(Loss) income from operations by segment	(158)	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
(Loss) income from operations by segment	$ (3,415)	$ (2,591)

Related Party Transactions (Det

Related Party Transactions (Details)

Sep. 10, 2019

Sep. 09, 2019USD ($)$ / sharesshares

Sep. 06, 2019

Jul. 30, 2019USD ($)

May 01, 2019USD ($)

Apr. 03, 2019USD ($)

Apr. 01, 2019USD ($)

Mar. 27, 2019USD ($)

Dec. 14, 2018USD ($)

Jul. 27, 2015USD ($)shares

Mar. 31, 2020USD ($)$ / sharesshares

Mar. 05, 2020USD ($)

Jan. 30, 2020USD ($)

Dec. 31, 2019shares

Mar. 29, 2019USD ($)

Dec. 17, 2018USD ($)

Related Party Transaction [Line Items]

Amount

$ 2,786,000

Shares owned (in shares) | shares

2,055,158

2,050,659

Gross proceeds from private placement

$ 3,000,000

Perma-Fix

Related Party Transaction [Line Items]

Investment made as part of Subscription Agreement

$ 1,000,000

Shares acquired (in shares) | shares

71,429

Investment owned, at fair value

$ 26,000

Board of Directors Chairman

Related Party Transaction [Line Items]

Obligations under the Limited Guaranty

$ 500,000

$ 2,500,000

$ 1,500,000

Board of Directors Chairman | Put Option

Related Party Transaction [Line Items]

Price of preferred stock issued (in dollars per share) | $ / shares

$ 10

Indexed shares (in shares) | shares

100,000

Option indexed, fair value

$ 1,000,000

Board of Directors Chairman | Affiliated Entity

Related Party Transaction [Line Items]

Amount

$ 250,000

Star Procurement, LLC

Related Party Transaction [Line Items]

Joint venture interest

50.00%

Capital contribution

$ 1,000,000

Digirad Corp | Board of Directors Chairman

Related Party Transaction [Line Items]

Percentage of outstanding shares

4.30%

4.30%

Preferred stock, outstanding (in shares) | shares

1,196,926

ATRM Holdings, Inc. | Board of Directors Chairman

Related Party Transaction [Line Items]

Percentage of outstanding shares

17.40%

ATRM Holdings, Inc.

Related Party Transaction [Line Items]

Preferred stock, dividend rate percentage

10.00%

LSVM

Related Party Transaction [Line Items]

Purchase price

$ 100

Series B Preferred Stock | ATRM Holdings, Inc.

Related Party Transaction [Line Items]

Preferred stock, dividend rate percentage

10.00%

Series B Preferred Stock | Lone Star Value Investors, LP | ATRM Holdings, Inc.

Related Party Transaction [Line Items]

Shares owned (in shares) | shares

222,577

300,000

Series B Preferred Stock | Lone Star Value Co-Invest I, LP | ATRM Holdings, Inc.

Related Party Transaction [Line Items]

Shares owned (in shares) | shares

374,562

ATRM Holdings, Inc. | Affiliated Entity

Related Party Transaction [Line Items]

Aggregate maximum amount to ATRM

$ 800,000

$ 400,000

Subsequent incremental payments to ATRM

$ 10,000

Waterford Lease

Related Party Transaction [Line Items]

Purchase price

$ 1,000,000

Lease period

120 months

Waterford Lease | Minimum

Related Party Transaction [Line Items]

Base rent payments

$ 1,200,000

Waterford Lease | Maximum

Related Party Transaction [Line Items]

Base rent payments

1,300,000

Park Lease

Related Party Transaction [Line Items]

Purchase price

$ 2,900,000

Lease period

120 months

Park Lease | Minimum

Related Party Transaction [Line Items]

Base rent payments

$ 3,300,000

Park Lease | Maximum

Related Party Transaction [Line Items]

Base rent payments

$ 3,600,000

Oxford Lease

Related Party Transaction [Line Items]

Purchase price

$ 1,200,000

Lease period

120 months

Oxford Lease | Minimum

Related Party Transaction [Line Items]

Base rent payments

$ 1,400,000

Oxford Lease | Maximum

Related Party Transaction [Line Items]

Base rent payments

$ 1,500,000

North Country Steel Inc.

Related Party Transaction [Line Items]

Lease period

5 years

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due January 12, 2020

Related Party Transaction [Line Items]

Promissory note

$ 600,000

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due January 12, 2020 | Minimum

Related Party Transaction [Line Items]

Interest rate

10.00%

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due January 12, 2020 | Maximum

Related Party Transaction [Line Items]

Interest rate

12.00%

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due June 1, 2020

Related Party Transaction [Line Items]

Promissory note

$ 1,090,000

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due June 1, 2020 | Minimum

Related Party Transaction [Line Items]

Interest rate

10.00%

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due June 1, 2020 | Maximum

Related Party Transaction [Line Items]

Interest rate

12.00%

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due November 30, 2020

Related Party Transaction [Line Items]

Promissory note

$ 300,000

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due November 30, 2020 | Minimum

Related Party Transaction [Line Items]

Interest rate

10.00%

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Due November 30, 2020 | Maximum

Related Party Transaction [Line Items]

Interest rate

12.00%

Notes Payable, Other Payables | Lone Star Value Management, Unsecured Promissory Note, Issued December 17, 2018

Related Party Transaction [Line Items]

Promissory note

$ 300,000

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Issued December 14, 2018

Related Party Transaction [Line Items]

Promissory note

$ 300,000

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Issued December 14, 2018 | Minimum

Related Party Transaction [Line Items]

Interest rate

10.00%

Notes Payable, Other Payables | ATRM Unsecured Promissory Note, Issued December 14, 2018 | Maximum

Related Party Transaction [Line Items]

Interest rate

12.00%

Private Placement

Related Party Transaction [Line Items]

Issuance of preferred stock (in shares) | shares

300,000

Price of preferred stock issued (in dollars per share) | $ / shares

$ 10

Series A Preferred Stock

Related Party Transaction [Line Items]

Digirad shares issued per ATRM share (in shares)

0.03

ATRM Holdings, Inc. | Series A Preferred Stock

Related Party Transaction [Line Items]

Digirad shares issued per ATRM share (in shares)

0.03

ATRM Holdings, Inc. | Series B Preferred Stock

Related Party Transaction [Line Items]

Digirad shares issued per ATRM share (in shares)

2.5

2.5

Redeemable Preferred Stock (Det

Redeemable Preferred Stock (Details)	Sep. 10, 2019	Mar. 31, 2020$ / shares
Temporary Equity Disclosure [Abstract]
Preferred Stock, dividend rate	0.100	0.10
Preferred stock, liquidation preference per share (USD per share)		$ 10

Redeemable Preferred Stock - Ac

Redeemable Preferred Stock - Activity (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance at December 31, 2019	$ 19,602
Deemed dividend on redeemable convertible preferred stock	484
Balance at March 31, 2020	$ 20,086

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - USD ($)	May 07, 2020	May 05, 2020	Apr. 30, 2020
Company Note [Member]
Subsequent Event [Line Items]
Notes and loans payable	$ 800,000
KBS Builders
Subsequent Event [Line Items]
Notes and loans payable			$ 800,000
EdgeBuilder
Subsequent Event [Line Items]
Notes and loans payable			200,000
Glenbrook
Subsequent Event [Line Items]
Notes and loans payable			$ 200,000
DIS [Member]
Subsequent Event [Line Items]
Notes and loans payable		$ 3,000,000
DMS [Member] | Company Note [Member]
Subsequent Event [Line Items]
Notes and loans payable	$ 100,000	$ 1,600,000