Star Equity (STRR) 10-Q 14 Nov 19 2019 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	DIGIRAD CORP
Entity Central Index Key	0000707388
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Outstanding (in shares)		2,048,743
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Current Reporting Status	Yes
Entity Shell Company	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Revenues	$ 28,333	$ 25,707	$ 78,043	$ 78,252
Cost of revenues:
Cost of revenues	23,137	21,349	63,862	63,720
Gross profit	5,196	4,358	14,181	14,532
Operating expenses:
Marketing, sales and general and administrative expenses	4,948	4,785	14,648	15,627
Amortization of intangible assets	399	356	965	1,069
Merger and finance costs	1,058	0	2,058	0
Goodwill impairment	0	0	0	476
Total operating expenses	6,405	5,141	17,671	17,172
Loss from operations	(1,209)	(783)	(3,490)	(2,640)
Other expense:
Other income (expense), net	3	(76)	(200)	(112)
Interest expense, net	(292)	(200)	(727)	(563)
Loss on sale of building	(4)	(507)	(236)	(507)
Loss on extinguishment of debt	0	0	(151)	(43)
Total other expense	(293)	(783)	(1,314)	(1,225)
Loss before income taxes	(1,502)	(1,566)	(4,804)	(3,865)
Income tax (expense) benefit	(2)	379	168	940
Net loss from continuing operations	(1,504)	(1,187)	(4,636)	(2,925)
Net (loss) income from discontinued operations	0	(239)	266	5,255
Net (loss) income	$ (1,504)	$ (1,426)	$ (4,370)	$ 2,330
Net (loss) income per share—basic and diluted
Continuing operations (in usd per share)	$ (0.74)	$ (0.59)	$ (2.27)	$ (1.45)
Discontinued operations (in usd per share)	0	(0.12)	0.13	2.61
Net (loss) income per share—basic and diluted (in usd per share)	(0.74)	(0.71)	(2.14)	1.16
Dividends declared per common share (in usd per share)	$ 0	$ 0.055	$ 0	$ 0.165
Other comprehensive (loss) income:
Reclassification of tax provision impact	$ 0	$ 0	$ 22	$ 0
Reclassification of unrealized gains on equity securities to retained earnings	0	0	0	(17)
Total other comprehensive income (loss)	0	0	22	(17)
Comprehensive (loss) income	(1,504)	(1,426)	(4,348)	2,313
Healthcare
Revenues:
Revenues	25,596	25,707	75,306	78,252
Cost of revenues:
Cost of revenues	20,819	21,349	61,367	63,720
Building and Construction
Revenues:
Revenues	2,729	0	2,729	0
Cost of revenues:
Cost of revenues	2,252	0	2,252	0
Real Estate and Investments
Revenues:
Revenues	8	0	8	0
Cost of revenues:
Cost of revenues	$ 66	$ 0	$ 243	$ 0

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,479	$ 1,545
Restricted cash	194	167
Equity securities	21	153
Accounts receivable, net	16,643	12,642
Inventories, net	8,179	5,402
Other current assets	1,805	1,285
Total current assets	28,321	21,194
Property and equipment, net	23,401	21,645
Operating lease right-of-use assets, net	5,015
Intangible assets, net	23,723	5,228
Goodwill	9,975	1,745
Restricted cash	0	101
Deferred tax assets	75	0
Investments in and receivables from related parties	0	275
Other assets	851	406
Total assets	91,361	50,594
Current liabilities:
Accounts payable	9,480	5,206
Accrued compensation	4,101	3,862
Accrued warranty	342	197
Deferred revenue	1,756	1,687
Short-term debt	3,988	0
Operating lease liabilities	1,790
Other current liabilities	4,708	2,265
Total current liabilities	26,165	13,217
Long-term debt	17,217	9,500
Long-term payable from related parties	1,925	0
Deferred tax liabilities	121	121
Operating lease liabilities, net of current portion	3,356
Other liabilities	1,749	1,956
Total liabilities	50,533	24,794
Commitments and contingencies (Note 10)
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 September 30, 2019	19,156	0
Stockholders’ equity:
Common stock, $0.0001 par value: 30,000,000 shares authorized; 2,048,743 and 2,024,979 shares issued and outstanding (net of treasury shares) at September 30, 2019 and December 31, 2018, respectively	0	0
Treasury stock, at cost; 258,849 shares at September 30, 2019 and December 31, 2018	(5,728)	(5,728)
Additional paid-in capital	145,672	145,430
Accumulated other comprehensive loss	0	(22)
Accumulated deficit	(118,272)	(113,880)
Total stockholders’ equity	21,672	25,800
Total liabilities, mezzanine equity and stockholders’ equity	$ 91,361	$ 50,594

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)	9 Months Ended
	Sep. 30, 2019$ / sharesshares	Dec. 31, 2018$ / sharesshares
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)	10,000,000
Preferred Stock, dividend rate	0.1
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	0
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)	2,048,743	2,024,979
Common stock, outstanding (in shares)	2,048,743	2,024,979
Treasury stock (in shares)	258,849	258,849

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net (loss) income	$ (4,370)	$ 2,330
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	4,670	5,651
Amortization of intangible assets	965	1,082
Amortization of operating lease right-of-use assets	942
Provision for bad debt	113	60
Stock-based compensation	416	545
Goodwill impairment	0	476
Gain on disposal of discontinued operations	(350)	(6,208)
Amortization of loan issuance costs	48	32
Debt issuance costs written-off	151	43
Financing costs write-off	273	0
Gain on sale of assets	(56)	(51)
Deferred income taxes	(75)	(63)
Other, net	(29)	112
Changes in operating assets and liabilities:
Accounts receivable	(1,380)	2,367
Inventories	(1,081)	(355)
Other assets	(506)	447
Accounts payable	242	(706)
Accrued compensation	(267)	(2,250)
Deferred revenue	142	(930)
Operating lease liabilities	(988)
Other liabilities	375	(364)
Net cash (used in) provided by operating activities	(765)	2,218
Investing activities
Purchases of property and equipment	(1,182)	(1,919)
Purchase of real estate from related and third parties	(5,180)	0
Proceeds from sale of property and equipment	1,496	1,780
Purchases of equity securities	0	(14)
Proceeds from sales of equity securities	140	0
Proceeds from sale of discontinued operations	0	6,844
Payments to acquire interest in joint ventures	(1,000)	0
Net cash (used in) provided by investing activities	(5,726)	6,691
Financing activities
Proceeds from borrowings	66,640	29,296
Repayment of debt	(59,057)	(35,203)
Repayment of Gerber acquisition loan	(3,000)	0
Loan issuance costs	(421)	(7)
Dividends paid	0	(3,321)
Issuances of common stock	0	26
Issuances of preferred stock	3,000	0
Fees payable on issuance of preferred stock	(150)	0
Taxes paid related to net share settlement of equity awards	(24)	(74)
Repayment of obligations under finance leases	(626)	(615)
Net cash provided by (used in) financing activities	6,362	(9,898)
Net decrease in cash, cash equivalents, and restricted cash	(129)	(989)
Cash, cash equivalents, and restricted cash at beginning of period	1,802	2,220
Cash, cash equivalents, and restricted cash at end of period	$ 1,673	$ 1,231

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common stock	Treasury Stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2017		2,006,000
Beginning balance at Dec. 31, 2017	$ 27,799	$ 0	$ (5,728)	$ 148,165	$ (5)	$ (114,633)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	200			200
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	(69)			(69)
Dividends paid	(1,105)			(1,105)
Net (loss) income	4,106					4,106
Unrealized loss on securities available-for-sale					(17)	17
Ending balance (in shares) at Mar. 31, 2018		2,012,000
Ending balance at Mar. 31, 2018	30,931	$ 0	(5,728)	147,191	(22)	(110,510)
Beginning balance (in shares) at Dec. 31, 2017		2,006,000
Beginning balance at Dec. 31, 2017	27,799	$ 0	(5,728)	148,165	(5)	(114,633)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under stock incentive plans, net of shares withheld for employee taxes	74
Net (loss) income	2,330
Ending balance (in shares) at Sep. 30, 2018		2,023,000
Ending balance at Sep. 30, 2018	27,305	$ 0	(5,728)	145,341	(22)	(112,286)
Beginning balance (in shares) at Mar. 31, 2018		2,012,000
Beginning balance at Mar. 31, 2018	30,931	$ 0	(5,728)	147,191	(22)	(110,510)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	171			171
Shares issued under stock incentive plans, net of shares withheld for employee taxes	(6)			(6)
Dividends paid	(1,107)			(1,107)
Net (loss) income	(350)					(350)
Ending balance (in shares) at Jun. 30, 2018		2,012,000
Ending balance at Jun. 30, 2018	29,639	$ 0	(5,728)	146,249	(22)	(110,860)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	174			174
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)		11,000
Shares issued under stock incentive plans, net of shares withheld for employee taxes	27			27
Dividends paid	(1,109)			(1,109)
Net (loss) income	(1,426)					(1,426)
Ending balance (in shares) at Sep. 30, 2018		2,023,000
Ending balance at Sep. 30, 2018	$ 27,305	$ 0	(5,728)	145,341	(22)	(112,286)
Beginning balance (in shares) at Dec. 31, 2018	2,024,979	2,025,000
Beginning balance at Dec. 31, 2018	$ 25,800	$ 0	(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)
Net (loss) income	(1,657)					(1,657)
Reclassification of tax provision impact	22				22
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, 2018	0
Redeemable Preferred stock, beginning balance at Dec. 31, 2018	$ 0
Redeemable Preferred stock, ending balance (in shares) at Mar. 31, 2019	0
Redeemable Preferred stock,ending balance at Mar. 31, 2019	$ 0
Beginning balance (in shares) at Dec. 31, 2018	2,024,979	2,025,000
Beginning balance at Dec. 31, 2018	$ 25,800	$ 0	(5,728)	145,430	(22)	(113,880)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under stock incentive plans, net of shares withheld for employee taxes	24
Net (loss) income	$ (4,370)
Ending balance (in shares) at Sep. 30, 2019	2,048,743	2,048,000
Ending balance at Sep. 30, 2019	$ 21,672	$ 0	(5,728)	145,672	0	(118,272)
Redeemable Preferred stock, beginning balance (in shares) at Dec. 31, 2018	0
Redeemable Preferred stock, beginning balance at Dec. 31, 2018	$ 0
Redeemable Preferred stock, ending balance (in shares) at Sep. 30, 2019	1,915,637
Redeemable Preferred stock,ending balance at Sep. 30, 2019	$ 19,156
Beginning balance (in shares) at Mar. 31, 2019		2,031,000
Beginning balance at Mar. 31, 2019	24,253	$ 0	(5,728)	145,518	0	(115,537)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	190			190
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)		9,000
Shares issued for fractional shares in conjunction with reverse stock split (in shares)		2,000
Net (loss) income	(1,209)					(1,209)
Reclassification of tax provision impact	(22)					(22)
Ending balance (in shares) at Jun. 30, 2019		2,042,000
Ending balance at Jun. 30, 2019	$ 23,212	$ 0	(5,728)	145,708	0	(116,768)
Redeemable Preferred stock, beginning balance (in shares) at Mar. 31, 2019	0
Redeemable Preferred stock, beginning balance at Mar. 31, 2019	$ 0
Redeemable Preferred stock, ending balance (in shares) at Jun. 30, 2019	0
Redeemable Preferred stock,ending balance at Jun. 30, 2019	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	114			114
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)		6,000
Fees payable on issuance of preferred stock	(150)			(150)
Net (loss) income	$ (1,504)					(1,504)
Ending balance (in shares) at Sep. 30, 2019	2,048,743	2,048,000
Ending balance at Sep. 30, 2019	$ 21,672	$ 0	$ (5,728)	$ 145,672	$ 0	$ (118,272)
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of preferred stock (in shares)	1,916,000
Issuance of preferred stock	$ 19,156
Redeemable Preferred stock, ending balance (in shares) at Sep. 30, 2019	1,915,637
Redeemable Preferred stock,ending balance at Sep. 30, 2019	$ 19,156

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
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, 2018 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, 2018 , filed with the SEC on Form 10-K on March 1, 2019 , 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. Discontinued Operations On February 1, 2018, Digirad Corporation (the “Company” or “Digirad”) completed the sale of its customer contracts relating to the Medical Device Sales and Service (“MDSS”) post-warranty service business to Philips North America LLC (“Philips”) pursuant to an Asset Purchase Agreement, dated as of December 22, 2017 for $8.0 million . For all periods presented in our condensed consolidated statements of operations, all sales, costs, expenses, and income taxes attributable to MDSS, except as related to the impact of the decrease in the federal statutory tax rate (see Note 11 Income Taxes ), have been aggregated under the caption “earnings from discontinued operations, net of income taxes.” Cash flows used in or provided by MDSS operations as part of discontinued operations are disclosed in Note 2 Discontinued Operations, within the notes to our unaudited condensed consolidated financial statements. Unless otherwise noted, amounts and disclosures throughout these notes to condensed consolidated financial statements relate to our continuing operations. Sale of Telerhythmics, LLC On October 31, 2018, the Company entered into a membership interest purchase agreement (the “Telerhythmics Purchase Agreement”) with G Medical Innovations USA, Inc. (“G Medical”), pursuant to which we sold all the outstanding membership interests in Telerhythmics (“Telerhythmics”) to G Medical. The total consideration related to the Telerhythmics Purchase Agreement was $1.95 million in cash, which was paid at the closing on October 31, 2018. In connection with the transaction, the Company agreed to make partial monthly rent payments aggregating $0.2 million through January 2021. The Telerhythmics Purchase Agreement includes customary representations, warranties, covenants, and indemnification obligations of the parties, including a non-competition covenant by the Company. The gain on the sale of Telerhythmics, LLC was approximately $19 thousand . 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 5 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 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 September 30, 2019. 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. 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 February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which amended the existing accounting standards for the accounting for leases. Most significant among the changes in the standard is the recognition of ROU assets and lease liabilities by lessees for those leases classified as operating leases under current U.S. GAAP. Under the standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Company adopted ASC 842 beginning January 1, 2019, using the modified-retrospective method, which will result in a cumulative effect adjustment to accumulated deficit at the beginning of 2019, rather than adjustments to the comparative prior periods presented in the financial statements. In connection with the adoption, the Company has elected to utilize the package of practical expedients, including: (1) not reassess the lease classification for any expired or existing leases, (2) not reassess the treatment of initial direct costs as they related to existing leases, and (3) not reassess whether expired or existing contracts are or contain leases. Upon adoption, the Company recorded right-of-use assets and lease liabilities on its condensed consolidated balance sheet of $3.8 million and $3.9 million , respectively, primarily related to real estate and vehicle leases. See Note 7 Leases, within the notes to our unaudited condensed consolidated financial statements . 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 September 30, 2019 , the Company has capitalized $0.2 million of implementation costs.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations On February 1, 2018 , the Company completed the sale of its customer contracts relating to our MDSS post-warranty service business to Philips pursuant to an Asset Purchase Agreement, dated as of December 22, 2017, for $8.0 million . The total cash proceeds were adjusted for deferred revenue liabilities assigned to Philips at the closing date, as well as $0.5 million of proceeds held in escrow, subject to claims for breaches of general representation and warranties, which was recorded in other current assets at the date of sale. All claims were settled as of December 31, 2018 . Prior to the sale of the customer contracts, we received notification from Philips on September 28, 2017 , that our distribution agreement to sell Philips imaging systems on a commission basis would be terminated, effective December 31, 2017 . As a result, our product sales activities within our MDSS reportable segment were also discontinued effective in the first quarter of 2018 . For the nine months ended September 30, 2019 , Digirad recognized a $350 thousand gain for the remaining settlement of the warranty claims in regards to equipment sold to Phillips. The Company deemed the disposition of our MDSS reportable segment in the first quarter of 2018 to represent a strategic shift that will have a major effect on our operations and financial results, in accordance with the provisions of FASB authoritative guidance on the presentation of financial statements, we have classified the results of our MDSS segment as discontinued operations in our condensed consolidated statement of operations for all periods presented. The Company has allocated a portion of interest expense to discontinued operations since the proceeds received from the sale were required to be used to pay down outstanding borrowings under our previous revolving credit facility with Comerica Bank, a Texas banking association (“Comerica Bank”) under that certain Revolving Credit Agreement, dated June 21, 2017, by and between the Company and Comerica Bank (the “Comerica Credit Agreement”). The allocation was based on the ratio of proceeds received in the sale to total borrowings for the period. In addition, certain general and administrative costs related to corporate and shared service functions previously allocated to the MDSS reportable segment are not included in discontinued operations. The following table presents financial results of the MDSS business (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Total revenues $ — $ — $ — $ 789 Total cost of revenues — — — 555 Gross profit — — — 234 Operating expenses: Marketing and sales — — — 85 General and administrative — — — 163 Amortization of intangible assets — — — 13 Loss (gain) on sale of discontinued operations — 53 (350 ) (6,208 ) Total operating expenses — 53 (350 ) (5,947 ) (Loss) Income from discontinued operations — (53 ) 350 6,181 Interest expense — — — (26 ) (Loss) Income from discontinuing operations before income taxes — (53 ) 350 6,155 Income tax expense — (186 ) (84 ) (900 ) (Loss) Income from discontinuing operations $ — $ (239 ) $ 266 $ 5,255 The following table presents supplemental cash flow information of discontinued operations (in thousands): Nine Months Ended September 30, 2019 2018 Operating activities: Depreciation $ — $ 2 Amortization of intangible assets $ — $ 13 Gain on sale of discontinued operations $ (350 ) $ (6,208 ) Stock-based compensation $ — $ (1 ) Investing activities: Proceeds from the sale of discontinued operations $ — $ 6,844

Revenue

Revenue	9 Months Ended
	Sep. 30, 2019
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. Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services. The Company records the amount of revenue that reflects the consideration that it expects to receive in exchange for those goods or services. The Company applies the following five-step model in order to determine this amount: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation. 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 when an observable price is not available, we use a cost plus margin approach. 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 and nine months ended September 30, 2019 and 2018 , disaggregated by major source (in thousands): Three Months Ended September 30, 2019 Diagnostic Services Diagnostic Imaging Mobile Healthcare Building and Construction (1) Real Estate and Investments Total Major Goods/Service Lines Mobile Imaging $ 11,476 $ — $ 7,940 $ — $ — $ 19,416 Camera — 1,682 — — — 1,682 Camera Support — 1,669 — — — 1,669 Healthcare Revenue from Contracts with Customers 11,476 3,351 7,940 — — 22,767 Lease Income 194 — 2,635 7 — 2,836 Building and Construction — — — 2,722 — 2,722 Real Estate and Investments — — — — 8 8 Total Revenues $ 11,670 $ 3,351 $ 10,575 $ 2,729 $ 8 $ 28,333 Timing of Revenue Recognition Services and goods transferred over time $ 11,670 $ 1,521 $ 10,458 $ 7 $ — $ 23,656 Services and goods transferred at a point in time — 1,830 117 2,722 8 4,677 Total Revenues $ 11,670 $ 3,351 $ 10,575 $ 2,729 $ 8 $ 28,333 Nine Months Ended September 30, 2019 Diagnostic Services Diagnostic Imaging Mobile Healthcare Building and Construction (1) Real Estate and Investments Total Major Goods/Service Lines Mobile Imaging $ 35,169 $ — $ 22,927 $ — $ — $ 58,096 Camera — 3,980 — — — 3,980 Camera Support 40 4,943 593 — — 5,576 Healthcare Revenue from Contracts with Customers 35,209 8,923 23,520 — — 67,652 Lease Income 505 — 7,149 7 — 7,661 Building and construction — — — 2,722 — 2,722 Real Estate and Investments — — — — 8 8 Total Revenues $ 35,714 $ 8,923 $ 30,669 $ 2,729 $ 8 $ 78,043 Timing of Revenue Recognition Services and goods transferred over time $ 35,714 $ 4,571 $ 30,251 $ 7 $ — $ 70,543 Services and goods transferred at a point in time — 4,352 418 2,722 8 7,500 Total Revenues $ 35,714 $ 8,923 $ 30,669 $ 2,729 $ 8 $ 78,043 Three Months Ended September 30, 2018 Diagnostic Services Diagnostic Imaging Mobile Healthcare Total Major Goods/Service Lines Mobile Imaging $ 12,284 $ — $ 8,026 $ 20,310 Camera — 1,105 — 1,105 Camera Support — 1,670 — 1,670 Healthcare Revenue from Contracts with Customers 12,284 2,775 8,026 23,085 Lease Income - Equipment 128 28 2,466 2,622 Total Revenues $ 12,412 $ 2,803 $ 10,492 $ 25,707 Timing of Revenue Recognition Services and goods transferred over time $ 11,542 $ 1,583 $ 10,372 $ 23,497 Services and goods transferred at a point in time 870 1,220 120 2,210 Total Revenues $ 12,412 $ 2,803 $ 10,492 $ 25,707 Nine Months Ended September 30, 2018 Diagnostic Services Diagnostic Imaging Mobile Healthcare Total Major Goods/Service Lines Mobile Imaging $ 37,257 $ — $ 24,659 $ 61,916 Camera — 3,088 — 3,088 Camera Support — 5,223 — 5,223 Healthcare Revenue from Contracts with Customers 37,257 8,311 24,659 70,227 Lease Income - Equipment 447 90 7,488 8,025 Total Revenues $ 37,704 $ 8,401 $ 32,147 $ 78,252 Timing of Revenue Recognition Services and goods transferred over time $ 34,629 $ 4,933 $ 31,849 $ 71,411 Services and goods transferred at a point in time 3,075 3,468 298 6,841 Total Revenues $ 37,704 $ 8,401 $ 32,147 $ 78,252 (1) Reflects twenty days of the Building and Construction segment activities from September 10th through September 30th. 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 -year warranty that we account for as an assurance-type warranty. The expected costs associated with our standard warranties and field service actions continue to be recognized as expense when cameras are sold. Maintenance service contracts sold beyond the term of our standard warranties are accounted for as a service-type warranty and revenue is deferred and recognized ratably over the period of the obligation. 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 or quarterly) 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 or quarterly). Changes in the deferred revenues for nine months ended September 30, 2019 , is as follows (in thousands): Digirad Balance at December 31, 2018 $ 1,713 ATRM beginning balance 317 Revenue recognized that was included in balance at beginning of the year (1,133 ) Deferred revenue, net, related to contracts entered into during the year 859 Balance at September 30, 2019 $ 1,756 Included in the balances above as of September 30, 2019 and December 31, 2018 is non-current deferred revenue included in other liabilities of $0 thousand and $26 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	9 Months Ended
	Sep. 30, 2019
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 and nine months ended September 30, 2019 and 2018 , 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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Loss from continuing operations $ (1,504 ) $ (1,187 ) $ (4,636 ) $ (2,925 ) (Loss) Income from discontinued operations — (239 ) 266 5,255 Net (loss) income $ (1,504 ) $ (1,426 ) $ (4,370 ) $ 2,330 Weighted-average shares outstanding—basic and diluted 2,046 2,018 2,038 2,013 (Loss) income per common share—basic and diluted Continuing operations $ (0.74 ) $ (0.59 ) $ (2.27 ) $ (1.45 ) Discontinued operations $ — $ (0.12 ) $ 0.13 $ 2.61 Net (loss) income per common share—basic and diluted $ (0.74 ) $ (0.71 ) $ (2.14 ) $ 1.16 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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Stock options 162 29 120 26 Restricted stock units 34 13 32 15 Total 196 42 152 41

Merger

Merger	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
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. The Company has not yet finalized the accounting for the ATRM Acquisition (in thousands): Cash and cash equivalents $ — 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 ) Net assets acquired (liabilities assumed) (10,238 ) Goodwill 8,230 Intangibles 19,460 Estimated purchase price $ 17,452 The $19.5 million of identified intangible assets was allocated as follows (in thousands): Fair Value Useful Life (years) Trade Names $ 5,540 15 Customer Relationships - Modular Buildings 7,820 10 Customer Relationships - Wood Products 5,670 10 Backlog 430 1 Fair value of identified intangible assets $ 19,460 Goodwill and intangibles of $8.2 million and $19.5 million , respectively, were not yet assigned to the segments. The goodwill recognized is attributable primarily to expected synergies and the assembled workforce of ATRM. As of September 30, 2019, there were no changes in the recognized amounts of goodwill resulting from the acquisition of ATRM. The Company recognized $2.1 million of acquisition related costs including legal, accounting that were expensed in the current period. These costs are included in the condensed consolidated statement of operations in the line item entitled “Merger and finance costs.” 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 September 30, 2019 are as follows (in thousands): Revenue $ 2,737 Net loss $ (178 ) The following table presents supplemental cash flow information of the merger (in thousands): Nine Months Ended September 30, 2019 2018 Non-cash investing and financing activities: Issuance of 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 $ — 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 and nine months ending September 30, 2019 and 2018 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenue $ 33,437 $ 34,538 $ 97,431 $ 106,155 Net loss from continuing operations (713 ) (2,486 ) (5,210 ) (5,289 ) (Loss) Income from discontinued operations — (239 ) 266 5,255 Net loss $ (713 ) $ (2,725 ) $ (4,944 ) $ (34 ) 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, 2018, together with the consequential tax effects.

Supplementary Balance Sheet Inf

Supplementary Balance Sheet Information	9 Months Ended
	Sep. 30, 2019
Inventory Disclosure [Abstract]
Supplementary Balance Sheet Information	Supplementary Balance Sheet Information The components of inventories are as follows (in thousands): September 30, December 31, Raw materials $ 4,769 $ 2,419 Work-in-process 2,470 2,307 Finished goods 1,323 1,056 Total inventories 8,562 5,782 Less reserve for excess and obsolete inventories (383 ) (380 ) Total inventories, net $ 8,179 $ 5,402 Property and equipment consist of the following (in thousands): September 30, December 31, 2018 Land $ 995 $ 550 Buildings and leasehold improvements 5,450 1,989 Machinery and equipment 57,582 56,899 Total property and equipment 64,027 59,438 Less accumulated depreciation (40,626 ) (37,793 ) Total property and equipment, net $ 23,401 $ 21,645 In April 2019, Digirad purchased three manufacturing facilities, including land, in Maine that manufacture modular buildings ( two of which were purchased from KBS Builders, Inc., a wholly-owned subsidiary of ATRM (“KBS”)) for $5.2 million and leased those three properties to KBS. 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. Refer to lease income discussed in Note 3. Revenue.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
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 5 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 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 Nine Months Ended September 30, 2019 Operating lease cost $ 378 $ 1,095 Finance lease cost: Amortization of finance lease assets $ 172 $ 494 Interest on finance lease liabilities 36 101 Total finance lease cost $ 208 $ 595 Supplemental cash flow information related to leases was as follows (in thousands): Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 988 Operating cash flows from finance leases $ 100 Financing cash flows from finance leases $ 626 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 2,235 Finance leases $ 607 Supplemental balance sheet information related to leases was as follows (in thousands): September 30, Operating lease right-of-use assets, net $ 5,015 Operating lease liabilities $ 1,790 Operating lease liabilities, net of current 3,356 Total operating lease liabilities $ 5,146 Finance lease assets $ 4,480 Finance lease accumulated amortization (1,521 ) Finance lease assets, net $ 2,959 Finance lease liabilities $ 934 Finance lease liabilities, net of current 1,680 Total finance lease liabilities $ 2,614 Weighted-Average Remaining Lease Term (in years) Operating leases 3.0 Finance leases 2.8 Weighted-Average Discount Rate Operating leases 5.54 % Finance leases 6.07 % 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 September 30, 2019 were as follows (in thousands): Operating Finance Leases 2019 (excludes the nine-months ended September 30, 2019) $ 516 $ 275 2020 1,995 1,035 2021 1,555 973 2022 865 434 2023 516 116 Thereafter 156 7 Total future minimum lease payments $ 5,603 $ 2,840 Less amounts representing interest 457 226 Present value of lease obligations $ 5,146 $ 2,614
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 5 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 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 Nine Months Ended September 30, 2019 Operating lease cost $ 378 $ 1,095 Finance lease cost: Amortization of finance lease assets $ 172 $ 494 Interest on finance lease liabilities 36 101 Total finance lease cost $ 208 $ 595 Supplemental cash flow information related to leases was as follows (in thousands): Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 988 Operating cash flows from finance leases $ 100 Financing cash flows from finance leases $ 626 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 2,235 Finance leases $ 607 Supplemental balance sheet information related to leases was as follows (in thousands): September 30, Operating lease right-of-use assets, net $ 5,015 Operating lease liabilities $ 1,790 Operating lease liabilities, net of current 3,356 Total operating lease liabilities $ 5,146 Finance lease assets $ 4,480 Finance lease accumulated amortization (1,521 ) Finance lease assets, net $ 2,959 Finance lease liabilities $ 934 Finance lease liabilities, net of current 1,680 Total finance lease liabilities $ 2,614 Weighted-Average Remaining Lease Term (in years) Operating leases 3.0 Finance leases 2.8 Weighted-Average Discount Rate Operating leases 5.54 % Finance leases 6.07 % 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 September 30, 2019 were as follows (in thousands): Operating Finance Leases 2019 (excludes the nine-months ended September 30, 2019) $ 516 $ 275 2020 1,995 1,035 2021 1,555 973 2022 865 434 2023 516 116 Thereafter 156 7 Total future minimum lease payments $ 5,603 $ 2,840 Less amounts representing interest 457 226 Present value of lease obligations $ 5,146 $ 2,614

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018 (in thousands). Fair Value as of September 30, 2019 Level 1 Level 2 Level 3 Total Equity securities $ 21 $ 27 $ — $ 48 Lumber derivative contracts (2 ) — — (2 ) Total $ 19 $ 27 $ — $ 46 Fair Value as of December 31, 2018 Level 1 Level 2 Level 3 Total Equity securities $ 153 $ 6 $ — $ 159 Lumber derivative contracts — — — — Total $ 153 $ 6 $ — $ 159 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 September 30, 2019, the Company had a net long (buying) position of 1,870,000 board feet under seventeen lumber derivatives contracts and had a short position of 1,650,000 board feet under fifteen lumber derivative contracts. The level 1 and 2 securities and derivative contracts are included in other assets on the Company’s condensed consolidated balance sheet. The fair values are based on the closing prices observed on September 30, 2019 . During the nine months ended September 30, 2019 the Company recorded in the condensed consolidated statement of operations an unrealized gain of $29 thousand and immaterial unrealized losses. During the year ended December 31, 2018, the Company recorded unrealized gains of $43 thousand and unrealized losses of $105 thousand . We did not reclassify any investments between levels in the fair value hierarchy during the nine months ended September 30, 2019 . The fair values of the Company’s revolving credit facility approximate carrying value due to the variable rate nature of these borrowings.

Debt

Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	Debt A summary of the Company’s debts is as follows (in thousands): September 30, 2019 December 31, 2018 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate Revolving Credit Facility - SNB $ 17,217 4.52% $ — —% Revolving Credit Facility - Comerica $ — —% $ 9,500 4.87% Revolving Credit Facility - Gerber $ 1,349 7.75% $ — —% Revolving Credit Facility - Premier $ 2,639 6.75% $ — —% Digirad Loan Agreement On March 29, 2019, the Company entered into a Loan and Security Agreement (the “Loan Agreement”) by and among certain subsidiaries of the Company, as borrowers (collectively, the “Borrowers”); the Company, as guarantor; and Sterling National Bank, a national banking association, as lender (“SNB”). The Loan Agreement is a five -year credit facility maturing in March 2024, with a maximum credit amount of $20.0 million for both revolving loans and outstanding letter of credit obligations (the “SNB Credit Facility”). Under the SNB Credit Facility, Borrowers can request the issuance of letters of credit in an aggregate amount not to exceed $0.5 million at any one time outstanding. As of September 30, 2019 , the Company had $0.1 million of letters of credit outstanding and had additional borrowing capacity of $2.8 million . At the Borrowers’ option, the SNB Credit Facility will bear interest at either (i) a Floating LIBOR Rate, as defined in the Loan Agreement, plus a margin of 2.50% per annum; or (ii) a Fixed LIBOR Rate, as defined in the 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 under the Comerica Credit Agreement. The Loan Agreement includes certain representations, warranties of Borrowers, as well as events of default and certain affirmative and negative covenants by the Borrowers that are customary for loan agreements of this type. These covenants include restrictions on borrowings, investments and dispositions by Borrowers, as well as limitations on the Borrowers’ ability to make certain distributions. Upon the occurrence and during the continuation of an event of default under the Loan Agreement, SNB may, among other things, declare the loans and all other obligations under the Loan Agreement immediately due and payable and increase the interest rate at which loans and obligations under the 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 Borrowers and a pledge of all shares of the 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 “Limited 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 Loan Agreement and related SNB Credit Facility documents. Mr. Eberwein’s obligations under the Limited 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 Limited Guaranty. Mr. Eberwein’s obligations under the Limited Guaranty terminate upon the Company and Borrowers achieving certain milestones set forth therein. In connection with the SNB Credit Facility, in the nine months ended September 30, 2019 , the Company recognized a $0.2 million loss on extinguishment due to the write off of unamortized deferred financing costs associated with the Comerica Credit Agreement. At September 30, 2019 , Digirad was in compliance with all covenants. ATRM Loan Agreements As of September 30, 2019 , ATRM had outstanding revolving lines of credit of approximately $4.0 million . Our debt through ATRM primarily included (i) $ 1.3 million principal outstanding on KBS’s $4.0 million revolving credit facility under a Loan and Security Agreement, dated February 23, 2016, (as amended, the “KBS Loan Agreement”), with Gerber Finance Inc. (“Gerber Finance”) and (ii) $ 2.6 million principal outstanding on EBGL’s $3.0 million revolving credit facility under a Revolving Credit Loan Agreement, dated June 30, 2017 (as amended, the “Premier Loan Agreement”) with Premier Bank (“Premier”), net of an immaterial amount of unamortized financing fees. As of September 30, 2019 , ATRM is at the maximum borrowing capacity under both revolving lines of credit, based on the inventory and accounts receivable on that day which fluctuates weekly. See Note 13, Related Party Transactions , for information regarding certain ATRM promissory notes that are outstanding. KBS Loan Agreement 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 was scheduled to expire on February 22, 2018, but, under the terms of the agreement, was extended automatically for an additional one -year period ending on February 22, 2019, and in 2019 the KBS Loan Agreement was again extended automatically for an additional one -year period ending on February 22, 2020. The KBS Loan Agreement may extend again automatically for an additional one -year period unless a party provides prior written notice of termination. Upon the final expiration of the term of the KBS Loan Agreement, the outstanding principal balance is payable in full. Borrowings bear interest at the prime rate plus 2.75% , with interest payable monthly. The KBS Loan Agreement also provides for certain fees payable to Gerber Finance during its term, including a 1.5% annual facilities fee and a 0.10% monthly collateral monitoring fee. KBS’s obligations under the KBS Loan Agreement are secured by all of its assets and are guaranteed by ATRM. Unsecured promissory notes issued by KBS and ATRM are subordinate to KBS’s obligations under the KBS Loan Agreement. The KBS Loan Agreement contains representations, warranties, affirmative and negative covenants, defined events of default and other provisions customary for financings of this type. Financial covenants require that KBS maintain a maximum leverage ratio (as defined in the KBS Loan Agreement) and KBS not incur a net annual post-tax loss in any fiscal year during the term of the KBS Loan Agreement. At September 30, 2019 , approximately $1.3 million was outstanding under the KBS Loan Agreement. 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, 2018 and 2017, 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 these test dates. Additionally, KBS was not in compliance with the requirement to deliver the Company's fiscal year-end financial statements reviewed by an independent certified accounting firm acceptable to Gerber Finance within 105 days from the fiscal year ended December 31, 2017. 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 and June 2019, we obtained a waiver from Gerber Finance for these events. In addition obtaining a waiver for these covenants, the Company and Gerber Finance 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 Finance, KBS, ATRM and the Company, pursuant to which the Company agreed to guarantee amounts borrowed by certain ATRM’s subsidiaries from Gerber Finance. 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 Finance to them. The Twelfth Amendment also provides that upon payment in full of the EGBL Obligations (as defined therein), the amount of the Cash Collateral (as defined therein) will be reduced to $300,000 . Additionally, ATRM has on deposit $200,000 in a collateral account maintained with Gerber Finance to secure the loans under the KBS Loan Agreement. EBGL Line of Credit On June 30, 2017, EBGL entered into the Premier Loan Agreement with 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 Finance (the “EBGL Loan Agreement”), which was terminated on the same date and all obligations of EBGL and ATRM in favor of Gerber Finance 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. 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, 2018 and 2017, EBGL was not in compliance with the following covenants under the Premier Loan Agreement: (i) requirement to maintain a Debt Service Coverage Ratio for the calendar year of at least 1.0 ; and (ii) a requirement to deliver the Company'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. In April, October and November 2019, we obtained a waiver from Premier for these events through October 1, 2019 and further January 1, 2020 (the current maturity date of the Premier Loan Agreement). The Premier Loan Agreement contains representations, warranties, affirmative and negative covenants, events of default and other provisions customary for financings of this type. The occurrence of any event of default under the Premier Loan Agreement may result in the obligations of EBGL becoming immediately due and payable. 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, 2020, under which ATRM and Mr. Eberwein have absolutely and unconditionally guaranteed all of EBGL’s obligations under the Premier Loan Agreement.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies In 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	9 Months Ended
	Sep. 30, 2019
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, 2017, 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. During the quarter ended September 30, 2019, the Company acquired ATRM by way of a merger between ATRM and a newly formed wholly owned subsidiary of the Company, with ATRM surviving the merger as wholly owned subsidiary of the Company. As a result of the ATRM Merger, the Company will absorb the tax attributes of ATRM. The Company is still evaluating the impact of the ATRM Acquisition to the Company’s tax accounts. To the extent that the write up of acquired intangibles in the acquisition exceed the value of ATRM’s tax attributes after considering Internal Revenue Code section 382 ownership change rule impacts to those acquired tax attributes, the Company would need to record a deferred tax liability and tax expense associated with the ATRM Acquisition. The tax disclosures below do not contemplate the implications of any potential deferred tax liability or related expense associated with the ATRM Acquisition, as the Company currently doesn’t have enough information to finalize any conclusions with respect to the tax accounting for the ATRM Acquisition. The Company is currently performing analysis to evaluate the value of acquired tax attributes and is in process of working on the tax accounting for the ATRM Acquisition. 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. As a result of the intraperiod tax allocation rules, for the nine months ended September 30, 2019 , the Company recorded an income tax benefit of $0.2 million and an income tax expense of $0.1 million within continuing operations and discontinued operations, respectively. For the nine months ended September 30, 2018 , the Company recorded an income tax benefit of $0.9 million and $0.9 million of income tax expense within continuing operations and discontinued operations, respectively. As of September 30, 2019 , we had unrecognized tax benefits of approximately $3.6 million related to uncertain tax positions. Included in the unrecognized tax benefits were $3.2 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 2014; 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.

Segments

Segments	9 Months Ended
	Sep. 30, 2019
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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenue by segment: Diagnostic Services $ 11,670 $ 12,412 $ 35,714 $ 37,704 Diagnostic Imaging 3,351 2,803 8,923 8,401 Mobile Healthcare 10,575 10,492 30,669 32,147 Building and Construction 2,729 — 2,729 — Real Estate and Investments 43 — 43 — Corporate, eliminations and other (35 ) — (35 ) — Consolidated revenue $ 28,333 $ 25,707 $ 78,043 $ 78,252 Gross profit by segment: Diagnostic Services $ 2,162 $ 2,404 $ 7,548 $ 7,620 Diagnostic Imaging 1,174 1,154 3,040 3,665 Mobile Healthcare 1,441 800 3,351 3,247 Building and Construction 477 — 477 — Real Estate and Investments (23 ) — (200 ) — Corporate, eliminations and other (35 ) — (35 ) — Consolidated gross profit $ 5,196 $ 4,358 $ 14,181 $ 14,532 (Loss) income from operations by segment: Diagnostic Services $ 1,344 $ 1,761 $ 5,037 $ 3,850 Diagnostic Imaging 755 160 1,663 1,814 Mobile Healthcare 551 (192 ) 367 (171 ) Building and Construction 26 — 26 — Real Estate and Investments (61 ) — (260 ) — Corporate, eliminations and other (35 ) — (35 ) — Unallocated corporate and other expenses (2,731 ) (2,512 ) (8,230 ) (7,657 ) Segment loss from operations (151 ) (783 ) (1,432 ) (2,164 ) Goodwill impairment — — — (476 ) Merger and finance costs (1,058 ) — (2,058 ) — Consolidated loss from operations $ (1,209 ) $ (783 ) $ (3,490 ) $ (2,640 ) Depreciation and amortization by segment: Diagnostic Services $ 333 $ 510 $ 942 $ 1,750 Diagnostic Imaging 64 70 215 221 Mobile Healthcare 1,272 1,322 4,137 4,500 Building and Construction 124 — 124 — Real Estate and Investments 208 — 243 — Total depreciation and amortization $ 2,001 $ 1,902 $ 5,661 $ 6,471 Subsequent to the ATRM Merger, the Company formed a building and construction segment through ATRM that 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. The Company also formed real estate and investments segment through SRE and LSVM to manage real estate assets and investments.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Perma-Fix Mr. John Climaco currently serves as a Director of the Company and a member of the Corporate Governance and Strategic Advisory committees of the Board. 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 the new 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. In addition, in connection with the Subscription Agreement, the Company’s President and CEO was appointed to the Supervisory Board of Perma-Fix Medical. The investment in Perma-Fix is included in other assets in the condensed consolidated balance sheets. Limited Guaranty On March 29, 2019, in connection with the Company’s entry into the Loan Agreement, Mr. Eberwein, the Chairman of the Company’s board of directors, entered into Limited Guaranty Agreement (the “Limited Guaranty”) with SNB pursuant to which he guaranteed to SNB the prompt performance of all the Borrowers’ obligations to SNB under the Loan Agreement, including the full payment of all indebtedness owing by Borrowers to SNB under or in connection with the Loan Agreement and related SNB Credit Facility documents. Mr. Eberwein’s obligations under the Limited 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 Limited Guaranty. Mr. Eberwein’s obligations under the Limited Guaranty terminate upon the Company and Borrowers achieving certain milestones set forth therein. 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 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). Prior to the closing of the ATRM Merger, Mr. Eberwein was also Chairman of the board of directors of ATRM. 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 September 30, 2019, Mr. Eberwein owned approximately 4.3% of the outstanding Digirad common stock. In addition, as of September 30, 2019, Mr. Eberwein owned 1,196,926 share 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 per share for total proceeds to the Company of $3 million . The Private Placement was made pursuant to the terms of a Stock Purchase Agreement, dated as of September 10, 2019 (the “SPA”). The 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. In addition, prior to the effective time of the ATRM Merger, the Company entered into a put option purchase agreement with Mr. Eberwein, pursuant to which the Company has the right to require Mr. Eberwein to acquire up to 100,000 shares of Company Preferred Stock at a price of $10 per share for aggregate proceeds of up to $1,000,000 at any time, in the Company’s discretion, during the 12 months following the effective time of the ATRM Merger (the “Issuance Option”). 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”); (ii) unsecured promissory note (principal amount of $1.02 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”); and (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. 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 Subordinate Agreement dated January 12, 2018, as amended, in favor of Gerber Finance. 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 Subordinate Agreement dated June 1, 2018, as amended, in favor of Gerber Finance. Subordination Agreement LSVM and LSV Co-Invest I are party to subordination agreements with ATRM and Gerber Finance 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 Finance. Additionally, as a condition to the Premier Loan Agreement, Mr. Eberwein entered into a guaranty in favor of Premier Bank, absolutely and unconditionally guaranteeing all of the borrowers’ obligations. 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 wholly-owned 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. As of September 30, 2019 and upon the completion of the ATRM Merger, the Company has made cash payments on behalf of ATRM of approximately $0.7 million . 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 September 30, 2019 , and upon the completion of the ATRM Merger, the investment in Star Procurement was included as purchase consideration as an increase in paid in capital within the condensed consolidated balance sheets. 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 consolidated balance sheets. As of September 30, 2019 , and upon the completion of the ATRM Merger, the note receivable was included as purchase consideration as an increase in paid in capital within the condensed consolidated balance sheets. Acquisitions and Leases of Maine Facilities Through its SRE subsidiary the Company purchased from KBS, a wholly-owned subsidiary of ATRM, two plants in Maine that manufacture modular buildings and 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 September 30, 2019 and upon the completion of the ATRM Merger, the sale-leaseback arrangement is consolidated in the condensed consolidated balance sheets.

Redeemable Preferred Stock

Redeemable Preferred Stock	9 Months Ended
	Sep. 30, 2019
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 (each a “dividend payment date”) to holders of record at the close of business on the first day of each payment month. As of September 30, 2019, the Company’s board has not declared the dividend.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events None.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2019
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, 2018 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, 2018 , filed with the SEC on Form 10-K on March 1, 2019 , 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.
Discontinued Operations	Discontinued Operations On February 1, 2018, Digirad Corporation (the “Company” or “Digirad”) completed the sale of its customer contracts relating to the Medical Device Sales and Service (“MDSS”) post-warranty service business to Philips North America LLC (“Philips”) pursuant to an Asset Purchase Agreement, dated as of December 22, 2017 for $8.0 million . For all periods presented in our condensed consolidated statements of operations, all sales, costs, expenses, and income taxes attributable to MDSS, except as related to the impact of the decrease in the federal statutory tax rate (see Note 11 Income Taxes ), have been aggregated under the caption “earnings from discontinued operations, net of income taxes.” Cash flows used in or provided by MDSS operations as part of discontinued operations are disclosed in Note 2 Discontinued Operations, within the notes to our unaudited condensed consolidated financial statements. Unless otherwise noted, amounts and disclosures throughout these notes to condensed consolidated financial statements relate to our continuing operations.
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 February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which amended the existing accounting standards for the accounting for leases. Most significant among the changes in the standard is the recognition of ROU assets and lease liabilities by lessees for those leases classified as operating leases under current U.S. GAAP. Under the standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Company adopted ASC 842 beginning January 1, 2019, using the modified-retrospective method, which will result in a cumulative effect adjustment to accumulated deficit at the beginning of 2019, rather than adjustments to the comparative prior periods presented in the financial statements. In connection with the adoption, the Company has elected to utilize the package of practical expedients, including: (1) not reassess the lease classification for any expired or existing leases, (2) not reassess the treatment of initial direct costs as they related to existing leases, and (3) not reassess whether expired or existing contracts are or contain leases. Upon adoption, the Company recorded right-of-use assets and lease liabilities on its condensed consolidated balance sheet of $3.8 million and $3.9 million , respectively, primarily related to real estate and vehicle leases. See Note 7 Leases, within the notes to our unaudited condensed consolidated financial statements . 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 September 30, 2019 , the Company has capitalized $0.2 million of implementation costs.
Revenue	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 -year warranty that we account for as an assurance-type warranty. The expected costs associated with our standard warranties and field service actions continue to be recognized as expense when cameras are sold. Maintenance service contracts sold beyond the term of our standard warranties are accounted for as a service-type warranty and revenue is deferred and recognized ratably over the period of the obligation. 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 or quarterly) 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 or quarterly). 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. Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services. The Company records the amount of revenue that reflects the consideration that it expects to receive in exchange for those goods or services. The Company applies the following five-step model in order to determine this amount: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation. 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 when an observable price is not available, we use a cost plus margin approach. 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. 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.

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations Information	The following table presents financial results of the MDSS business (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Total revenues $ — $ — $ — $ 789 Total cost of revenues — — — 555 Gross profit — — — 234 Operating expenses: Marketing and sales — — — 85 General and administrative — — — 163 Amortization of intangible assets — — — 13 Loss (gain) on sale of discontinued operations — 53 (350 ) (6,208 ) Total operating expenses — 53 (350 ) (5,947 ) (Loss) Income from discontinued operations — (53 ) 350 6,181 Interest expense — — — (26 ) (Loss) Income from discontinuing operations before income taxes — (53 ) 350 6,155 Income tax expense — (186 ) (84 ) (900 ) (Loss) Income from discontinuing operations $ — $ (239 ) $ 266 $ 5,255 The following table presents supplemental cash flow information of discontinued operations (in thousands): Nine Months Ended September 30, 2019 2018 Operating activities: Depreciation $ — $ 2 Amortization of intangible assets $ — $ 13 Gain on sale of discontinued operations $ (350 ) $ (6,208 ) Stock-based compensation $ — $ (1 ) Investing activities: Proceeds from the sale of discontinued operations $ — $ 6,844

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables present our revenues for the three and nine months ended September 30, 2019 and 2018 , disaggregated by major source (in thousands): Three Months Ended September 30, 2019 Diagnostic Services Diagnostic Imaging Mobile Healthcare Building and Construction (1) Real Estate and Investments Total Major Goods/Service Lines Mobile Imaging $ 11,476 $ — $ 7,940 $ — $ — $ 19,416 Camera — 1,682 — — — 1,682 Camera Support — 1,669 — — — 1,669 Healthcare Revenue from Contracts with Customers 11,476 3,351 7,940 — — 22,767 Lease Income 194 — 2,635 7 — 2,836 Building and Construction — — — 2,722 — 2,722 Real Estate and Investments — — — — 8 8 Total Revenues $ 11,670 $ 3,351 $ 10,575 $ 2,729 $ 8 $ 28,333 Timing of Revenue Recognition Services and goods transferred over time $ 11,670 $ 1,521 $ 10,458 $ 7 $ — $ 23,656 Services and goods transferred at a point in time — 1,830 117 2,722 8 4,677 Total Revenues $ 11,670 $ 3,351 $ 10,575 $ 2,729 $ 8 $ 28,333 Nine Months Ended September 30, 2019 Diagnostic Services Diagnostic Imaging Mobile Healthcare Building and Construction (1) Real Estate and Investments Total Major Goods/Service Lines Mobile Imaging $ 35,169 $ — $ 22,927 $ — $ — $ 58,096 Camera — 3,980 — — — 3,980 Camera Support 40 4,943 593 — — 5,576 Healthcare Revenue from Contracts with Customers 35,209 8,923 23,520 — — 67,652 Lease Income 505 — 7,149 7 — 7,661 Building and construction — — — 2,722 — 2,722 Real Estate and Investments — — — — 8 8 Total Revenues $ 35,714 $ 8,923 $ 30,669 $ 2,729 $ 8 $ 78,043 Timing of Revenue Recognition Services and goods transferred over time $ 35,714 $ 4,571 $ 30,251 $ 7 $ — $ 70,543 Services and goods transferred at a point in time — 4,352 418 2,722 8 7,500 Total Revenues $ 35,714 $ 8,923 $ 30,669 $ 2,729 $ 8 $ 78,043 Three Months Ended September 30, 2018 Diagnostic Services Diagnostic Imaging Mobile Healthcare Total Major Goods/Service Lines Mobile Imaging $ 12,284 $ — $ 8,026 $ 20,310 Camera — 1,105 — 1,105 Camera Support — 1,670 — 1,670 Healthcare Revenue from Contracts with Customers 12,284 2,775 8,026 23,085 Lease Income - Equipment 128 28 2,466 2,622 Total Revenues $ 12,412 $ 2,803 $ 10,492 $ 25,707 Timing of Revenue Recognition Services and goods transferred over time $ 11,542 $ 1,583 $ 10,372 $ 23,497 Services and goods transferred at a point in time 870 1,220 120 2,210 Total Revenues $ 12,412 $ 2,803 $ 10,492 $ 25,707 Nine Months Ended September 30, 2018 Diagnostic Services Diagnostic Imaging Mobile Healthcare Total Major Goods/Service Lines Mobile Imaging $ 37,257 $ — $ 24,659 $ 61,916 Camera — 3,088 — 3,088 Camera Support — 5,223 — 5,223 Healthcare Revenue from Contracts with Customers 37,257 8,311 24,659 70,227 Lease Income - Equipment 447 90 7,488 8,025 Total Revenues $ 37,704 $ 8,401 $ 32,147 $ 78,252 Timing of Revenue Recognition Services and goods transferred over time $ 34,629 $ 4,933 $ 31,849 $ 71,411 Services and goods transferred at a point in time 3,075 3,468 298 6,841 Total Revenues $ 37,704 $ 8,401 $ 32,147 $ 78,252 (1) Reflects twenty days of the Building and Construction segment activities from September 10th through September 30th.
Changes in Deferred Revenue	Changes in the deferred revenues for nine months ended September 30, 2019 , is as follows (in thousands): Digirad Balance at December 31, 2018 $ 1,713 ATRM beginning balance 317 Revenue recognized that was included in balance at beginning of the year (1,133 ) Deferred revenue, net, related to contracts entered into during the year 859 Balance at September 30, 2019 $ 1,756

Basic and Diluted Net Income _2

Basic and Diluted Net Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Loss from continuing operations $ (1,504 ) $ (1,187 ) $ (4,636 ) $ (2,925 ) (Loss) Income from discontinued operations — (239 ) 266 5,255 Net (loss) income $ (1,504 ) $ (1,426 ) $ (4,370 ) $ 2,330 Weighted-average shares outstanding—basic and diluted 2,046 2,018 2,038 2,013 (Loss) income per common share—basic and diluted Continuing operations $ (0.74 ) $ (0.59 ) $ (2.27 ) $ (1.45 ) Discontinued operations $ — $ (0.12 ) $ 0.13 $ 2.61 Net (loss) income per common share—basic and diluted $ (0.74 ) $ (0.71 ) $ (2.14 ) $ 1.16
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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Stock options 162 29 120 26 Restricted stock units 34 13 32 15 Total 196 42 152 41

Merger (Tables)

Merger (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 are as follows (in thousands): Revenue $ 2,737 Net loss $ (178 )
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. The Company has not yet finalized the accounting for the ATRM Acquisition (in thousands): Cash and cash equivalents $ — 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 ) Net assets acquired (liabilities assumed) (10,238 ) Goodwill 8,230 Intangibles 19,460 Estimated purchase price $ 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 (years) Trade Names $ 5,540 15 Customer Relationships - Modular Buildings 7,820 10 Customer Relationships - Wood Products 5,670 10 Backlog 430 1 Fair value of identified intangible assets $ 19,460
Schedule of Noncash or Part Noncash Acquisitions	The following table presents supplemental cash flow information of the merger (in thousands): Nine Months Ended September 30, 2019 2018 Non-cash investing and financing activities: Issuance of 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 $ —
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 and nine months ending September 30, 2019 and 2018 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenue $ 33,437 $ 34,538 $ 97,431 $ 106,155 Net loss from continuing operations (713 ) (2,486 ) (5,210 ) (5,289 ) (Loss) Income from discontinued operations — (239 ) 266 5,255 Net loss $ (713 ) $ (2,725 ) $ (4,944 ) $ (34 )

Supplementary Balance Sheet I_2

Supplementary Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2019
Inventory Disclosure [Abstract]
Schedule of Inventory	The components of inventories are as follows (in thousands): September 30, December 31, Raw materials $ 4,769 $ 2,419 Work-in-process 2,470 2,307 Finished goods 1,323 1,056 Total inventories 8,562 5,782 Less reserve for excess and obsolete inventories (383 ) (380 ) Total inventories, net $ 8,179 $ 5,402
Schedule of Property and Equipment	Property and equipment consist of the following (in thousands): September 30, December 31, 2018 Land $ 995 $ 550 Buildings and leasehold improvements 5,450 1,989 Machinery and equipment 57,582 56,899 Total property and equipment 64,027 59,438 Less accumulated depreciation (40,626 ) (37,793 ) Total property and equipment, net $ 23,401 $ 21,645

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Schedule of Lease Cost and Other Information	The components of lease expense are as follows (in thousands): Three Months Ended Nine Months Ended September 30, 2019 Operating lease cost $ 378 $ 1,095 Finance lease cost: Amortization of finance lease assets $ 172 $ 494 Interest on finance lease liabilities 36 101 Total finance lease cost $ 208 $ 595 Supplemental cash flow information related to leases was as follows (in thousands): Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 988 Operating cash flows from finance leases $ 100 Financing cash flows from finance leases $ 626 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 2,235 Finance leases $ 607
Schedule of Balance Sheet Information	Supplemental balance sheet information related to leases was as follows (in thousands): September 30, Operating lease right-of-use assets, net $ 5,015 Operating lease liabilities $ 1,790 Operating lease liabilities, net of current 3,356 Total operating lease liabilities $ 5,146 Finance lease assets $ 4,480 Finance lease accumulated amortization (1,521 ) Finance lease assets, net $ 2,959 Finance lease liabilities $ 934 Finance lease liabilities, net of current 1,680 Total finance lease liabilities $ 2,614 Weighted-Average Remaining Lease Term (in years) Operating leases 3.0 Finance leases 2.8 Weighted-Average Discount Rate Operating leases 5.54 % Finance leases 6.07 %
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 September 30, 2019 were as follows (in thousands): Operating Finance Leases 2019 (excludes the nine-months ended September 30, 2019) $ 516 $ 275 2020 1,995 1,035 2021 1,555 973 2022 865 434 2023 516 116 Thereafter 156 7 Total future minimum lease payments $ 5,603 $ 2,840 Less amounts representing interest 457 226 Present value of lease obligations $ 5,146 $ 2,614
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 September 30, 2019 were as follows (in thousands): Operating Finance Leases 2019 (excludes the nine-months ended September 30, 2019) $ 516 $ 275 2020 1,995 1,035 2021 1,555 973 2022 865 434 2023 516 116 Thereafter 156 7 Total future minimum lease payments $ 5,603 $ 2,840 Less amounts representing interest 457 226 Present value of lease obligations $ 5,146 $ 2,614

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018 (in thousands). Fair Value as of September 30, 2019 Level 1 Level 2 Level 3 Total Equity securities $ 21 $ 27 $ — $ 48 Lumber derivative contracts (2 ) — — (2 ) Total $ 19 $ 27 $ — $ 46 Fair Value as of December 31, 2018 Level 1 Level 2 Level 3 Total Equity securities $ 153 $ 6 $ — $ 159 Lumber derivative contracts — — — — Total $ 153 $ 6 $ — $ 159

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Summary of Long-Term Debt	A summary of the Company’s debts is as follows (in thousands): September 30, 2019 December 31, 2018 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate Revolving Credit Facility - SNB $ 17,217 4.52% $ — —% Revolving Credit Facility - Comerica $ — —% $ 9,500 4.87% Revolving Credit Facility - Gerber $ 1,349 7.75% $ — —% Revolving Credit Facility - Premier $ 2,639 6.75% $ — —%

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Segment information is as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenue by segment: Diagnostic Services $ 11,670 $ 12,412 $ 35,714 $ 37,704 Diagnostic Imaging 3,351 2,803 8,923 8,401 Mobile Healthcare 10,575 10,492 30,669 32,147 Building and Construction 2,729 — 2,729 — Real Estate and Investments 43 — 43 — Corporate, eliminations and other (35 ) — (35 ) — Consolidated revenue $ 28,333 $ 25,707 $ 78,043 $ 78,252 Gross profit by segment: Diagnostic Services $ 2,162 $ 2,404 $ 7,548 $ 7,620 Diagnostic Imaging 1,174 1,154 3,040 3,665 Mobile Healthcare 1,441 800 3,351 3,247 Building and Construction 477 — 477 — Real Estate and Investments (23 ) — (200 ) — Corporate, eliminations and other (35 ) — (35 ) — Consolidated gross profit $ 5,196 $ 4,358 $ 14,181 $ 14,532 (Loss) income from operations by segment: Diagnostic Services $ 1,344 $ 1,761 $ 5,037 $ 3,850 Diagnostic Imaging 755 160 1,663 1,814 Mobile Healthcare 551 (192 ) 367 (171 ) Building and Construction 26 — 26 — Real Estate and Investments (61 ) — (260 ) — Corporate, eliminations and other (35 ) — (35 ) — Unallocated corporate and other expenses (2,731 ) (2,512 ) (8,230 ) (7,657 ) Segment loss from operations (151 ) (783 ) (1,432 ) (2,164 ) Goodwill impairment — — — (476 ) Merger and finance costs (1,058 ) — (2,058 ) — Consolidated loss from operations $ (1,209 ) $ (783 ) $ (3,490 ) $ (2,640 ) Depreciation and amortization by segment: Diagnostic Services $ 333 $ 510 $ 942 $ 1,750 Diagnostic Imaging 64 70 215 221 Mobile Healthcare 1,272 1,322 4,137 4,500 Building and Construction 124 — 124 — Real Estate and Investments 208 — 243 — Total depreciation and amortization $ 2,001 $ 1,902 $ 5,661 $ 6,471

Basis of Presentation - Narrati

Basis of Presentation - Narrative (Details)	Sep. 10, 2019USD ($)$ / sharesshares	Sep. 09, 2019	Jun. 04, 2019	May 01, 2019	Oct. 31, 2018USD ($)	Sep. 30, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)shares	May 31, 2019shares	Jan. 01, 2019USD ($)
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	0.1					0.1
Series A Cumulative Perpetual Preferred Stock, par value (USD per share)	$ 0.0001
Preferred stock, liquidation preference per share (USD per share) | $ / shares						$ 10
Lease, right-of-use asset									$ 3,800,000
Lease, liability									$ 3,900,000
Capitalized implementation costs						$ 200,000
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 | 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	1,612,655					1,612,655
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
Telerhythmics
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Consideration received					$ 1,950,000
Total rent payments					$ 200,000
Gain on sale of Telerhythmics							$ 19,000
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

Discontinued Operations - Narra

Discontinued Operations - Narrative (Details) - MDSS post-warranty service business - Discontinued operations, disposed of by sale - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Feb. 01, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received					$ 8,000
Held in escrow					$ 500
Gain on sale of discontinued operations	$ 0	$ (53)	$ 350	$ 6,208

Discontinued Operations - Finan

Discontinued Operations - Financial Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Operating expenses:
(Loss) Income from discontinuing operations	$ 0	$ (239)	$ 266	$ 5,255
MDSS post-warranty service business | Discontinued operations, disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues	0	0	0	789
Total cost of revenues	0	0	0	555
Gross profit	0	0	0	234
Operating expenses:
Marketing and sales	0	0	0	85
General and administrative	0	0	0	163
Amortization of intangible assets	0	0	0	13
Loss (gain) on sale of discontinued operations	0	53	(350)	(6,208)
Total operating expenses	0	53	(350)	(5,947)
(Loss) Income from discontinued operations	0	(53)	350	6,181
Interest expense	0	0	0	(26)
(Loss) Income from discontinuing operations before income taxes	0	(53)	350	6,155
Income tax expense	0	(186)	(84)	(900)
(Loss) Income from discontinuing operations	$ 0	$ (239)	$ 266	$ 5,255

Discontinued Operations - Suppl

Discontinued Operations - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investing activities
Proceeds from sale of discontinued operations			$ 0	$ 6,844
MDSS post-warranty service business | Discontinued operations, disposed of by sale
Operating activities
Depreciation			0	2
Amortization of intangible assets	$ 0	$ 0	0	13
Loss (gain) on sale of discontinued operations	$ 0	$ 53	(350)	(6,208)
Stock-based compensation			0	(1)
Investing activities
Proceeds from sale of discontinued operations			$ 0	$ 6,844

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Lease Income	$ 2,836	$ 2,622	$ 7,661	$ 8,025
Total revenues	28,333	25,707	78,043	78,252
Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	23,656	23,497	70,543	71,411
Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,677	2,210	7,500	6,841
Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	19,416	20,310	58,096	61,916
Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,682	1,105	3,980	3,088
Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,669	1,670	5,576	5,223
Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	22,767	23,085	67,652	70,227
Total revenues	25,596	25,707	75,306	78,252
Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,722		2,722
Total revenues	2,729	0	2,729	0
Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	8		8
Total revenues	8	0	8	0
Diagnostic Services
Disaggregation of Revenue [Line Items]
Lease Income	194	128	505	447
Total revenues	11,670	12,412	35,714	37,704
Diagnostic Services | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	11,670	11,542	35,714	34,629
Diagnostic Services | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	870	0	3,075
Diagnostic Services | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	11,476	12,284	35,169	37,257
Diagnostic Services | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Diagnostic Services | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	40	0
Diagnostic Services | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	11,476	12,284	35,209	37,257
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	28	0	90
Total revenues	3,351	2,803	8,923	8,401
Diagnostic Imaging | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,521	1,583	4,571	4,933
Diagnostic Imaging | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,830	1,220	4,352	3,468
Diagnostic Imaging | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Diagnostic Imaging | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,682	1,105	3,980	3,088
Diagnostic Imaging | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,669	1,670	4,943	5,223
Diagnostic Imaging | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,351	2,775	8,923	8,311
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	2,635	2,466	7,149	7,488
Total revenues	10,575	10,492	30,669	32,147
Mobile Healthcare | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	10,458	10,372	30,251	31,849
Mobile Healthcare | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	117	120	418	298
Mobile Healthcare | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,940	8,026	22,927	24,659
Mobile Healthcare | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Mobile Healthcare | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	593	0
Mobile Healthcare | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,940	$ 8,026	23,520	$ 24,659
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	7		7
Total revenues	2,729		2,729
Building and Construction | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7		7
Building and Construction | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,722		2,722
Building and Construction | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Building and Construction | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Building and Construction | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Building and Construction | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Building and Construction | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,722		2,722
Building and Construction | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments
Disaggregation of Revenue [Line Items]
Lease Income	0		0
Total revenues	8		8
Real Estate and Investments | Services and goods transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments | Services and goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	8		8
Real Estate and Investments | Mobile Imaging
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments | Camera
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments | Camera Support
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments | Healthcare
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments | Building and Construction
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0		0
Real Estate and Investments | Real Estate and Investments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 8		$ 8

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Thousands	Sep. 06, 2019	Sep. 30, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Non-current deferred revenue		$ 0	$ 26
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	9 Months Ended
	Sep. 30, 2019USD ($)
Change In Contract With Customer, Liability [Roll Forward]
Digirad Balance at December 31, 2018	$ 1,713
ATRM beginning balance	317
Revenue recognized that was included in balance at beginning of the year	(1,133)
Deferred revenue, net, related to contracts entered into during the year	859
Balance at September 30, 2019	$ 1,756

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						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Loss from continuing operations	$ (1,504)			$ (1,187)			$ (4,636)	$ (2,925)
(Loss) Income from discontinued operations	0			(239)			266	5,255
Net (loss) income	$ (1,504)	$ (1,209)	$ (1,657)	$ (1,426)	$ (350)	$ 4,106	$ (4,370)	$ 2,330
Denominator:
Weighted average shares outstanding – basic and diluted (in shares)	2,046			2,018			2,038	2,013
Continuing operations (in usd per share)	$ (0.74)			$ (0.59)			$ (2.27)	$ (1.45)
Discontinued operations (in usd per share)	0			(0.12)			0.13	2.61
Net (loss) income per share—basic and diluted (in usd per share)	$ (0.74)			$ (0.71)			$ (2.14)	$ 1.16
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	196			42			152	41
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	162			29			120	26
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)	34			13			32	15

Merger - Narrative (Details)

Merger - Narrative (Details)	Sep. 10, 2019USD ($)$ / sharesshares	Sep. 09, 2019	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)shares	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Series A Cumulative Perpetual Preferred Stock, dividend rate	0.1				0.1
Series A Cumulative Perpetual Preferred Stock, par value (USD per share)	$ 0.0001
Goodwill			$ 9,975,000		$ 9,975,000		$ 1,745,000
Acquisition related costs			$ 1,058,000	$ 0	$ 2,058,000	$ 0
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	$ 19,460,000
Goodwill	$ 8,230,000
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	1,612,655				1,612,655
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. - USD ($) $ in Thousands	Sep. 10, 2019	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Shares issued in business acquisition (In shares)	1,615,637
Digirad Series A Cumulative Perpetual Preferred Stock (1,615,637 shares)	$ 16,156	$ 16,156	$ 0
Settlement of pre-existing note receivable between DRAD and ATRM	296	296	0
Fair value of pre-existing joint venture settlement between DRAD and ATRM	1,000	$ 1,000	$ 0
Estimated purchase price	$ 17,452

Merger - Summary of Recognized

Merger - Summary of Recognized Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 10, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill	$ 9,975		$ 1,745
ATRM Holdings, Inc.
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)
Net assets acquired (liabilities assumed)		(10,238)
Goodwill		8,230
Intangibles		19,460
Estimated purchase price		$ 17,452

Merger - Schedule of Intangible

Merger - Schedule of Intangible Assets Acquired (Details) - ATRM Holdings, Inc. $ in Thousands	Sep. 10, 2019USD ($)
Business Acquisition [Line Items]
Intangibles	$ 19,460
Trade Names
Business Acquisition [Line Items]
Intangibles	$ 5,540
Useful Life (years)	15 years
Customer Relationships - Modular Buildings
Business Acquisition [Line Items]
Intangibles	$ 7,820
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	1 Months Ended
	Sep. 30, 2019USD ($)
Business Acquisition [Line Items]
Revenue	$ 2,737
Net loss	$ (178)

Merger - Schedule of Cash Flow

Merger - Schedule of Cash Flow Information (Details) - ATRM Holdings, Inc. - USD ($) $ in Thousands	Sep. 10, 2019	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Shares issued in business acquisition (In shares)	1,615,637
Digirad Series A Cumulative Perpetual Preferred Stock (1,615,637 shares)	$ 16,156	$ 16,156	$ 0
Settlement of pre-existing note receivable between DRAD and ATRM	296	296	0
Fair value of pre-existing joint venture settlement between DRAD and ATRM	$ 1,000	$ 1,000	$ 0

Merger - Schedule of Pro Forma

Merger - Schedule of Pro Forma Information (Details) - ATRM Holdings, Inc. - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Revenue	$ 33,437	$ 34,538	$ 97,431	$ 106,155
Net loss from continuing operations	(713)	(2,486)	(5,210)	(5,289)
(Loss) Income from discontinued operations	0	(239)	266	5,255
Net loss	$ (713)	$ (2,725)	$ (4,944)	$ (34)

Supplementary Balance Sheet I_3

Supplementary Balance Sheet Information - Schedule of Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 4,769	$ 2,419
Work-in-process	2,470	2,307
Finished goods	1,323	1,056
Total inventories	8,562	5,782
Less reserve for excess and obsolete inventories	(383)	(380)
Total inventories, net	$ 8,179	$ 5,402

Supplementary Balance Sheet I_4

Supplementary Balance Sheet Information - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 64,027	$ 59,438
Less accumulated depreciation	(40,626)	(37,793)
Total property and equipment, net	23,401	21,645
Land
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	995	550
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	5,450	1,989
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 57,582	$ 56,899

Supplementary Balance Sheet I_5

Supplementary Balance Sheet Information - Narrative (Details) - USD ($) $ in Thousands	Sep. 06, 2019	Apr. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Sale Leaseback Transaction [Line Items]
Purchase of plants		$ 5,200	$ 1,182	$ 1,919
North Country Steel Inc.
Sale Leaseback Transaction [Line Items]
Lease period	5 years

Leases - Narrative (Details)

Leases - Narrative (Details)	9 Months Ended
	Sep. 30, 2019
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	5 years

Leases - Schedule of Lease Expe

Leases - Schedule of Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 378	$ 1,095
Finance lease cost:
Amortization of finance lease assets	172	494
Interest on finance lease liabilities	36	101
Total finance lease cost	$ 208	$ 595

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 988
Operating cash flows from finance leases	100
Financing cash flows from finance leases	626
Right-of-use assets obtained in exchange for lease obligations
Right-of-use assets obtained in exchange for lease obligations, operating lease	2,235
Right-of-use assets obtained in exchange for lease obligations, finance leases	$ 607

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Balance Sheet Information (Details) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
Operating lease right-of-use assets, net	$ 5,015
Operating lease liabilities	1,790
Operating lease liabilities, net of current portion	3,356
Total operating lease liabilities	5,146
Finance lease assets	4,480
Finance lease accumulated amortization	(1,521)
Finance lease assets, net	2,959
Finance lease liabilities	934
Finance lease liabilities, net of current	1,680
Total finance lease liabilities	$ 2,614
Operating lease, weighted-Average Remaining Lease Term (in years)	3 years
Financing leases, weighted-Average Remaining Lease Term (in years)	2 years 10 months
Operating leases, weighted-Average Discount Rate	5.54%
Financing leases, weighted-Average Discount Rate	6.07%

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments, Lessee (Details) $ in Thousands	Sep. 30, 2019USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019 (excludes the nine-months ended September 30, 2019)	$ 516
2020	1,995
2021	1,555
2022	865
2023	516
Thereafter	156
Total future minimum lease payments	5,603
Less amounts representing interest	457
Present value of lease obligations	5,146
Finance Lease, Liability, Payment, Due [Abstract]
2019 (excludes the nine-months ended September 30, 2019)	275
2020	1,035
2021	973
2022	434
2023	116
Thereafter	7
Total future minimum lease payments	2,840
Less amounts representing interest	226
Present value of lease obligations	$ 2,614

Financial Instruments - Financi

Financial Instruments - Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 48	$ 159
Lumber derivative contracts	(2)	0
Total	46	159
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	21	153
Lumber derivative contracts	(2)	0
Total	19	153
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	27	6
Lumber derivative contracts	0	0
Total	27	6
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Lumber derivative contracts	0	0
Total	$ 0	$ 0

Financial Instruments - Narrati

Financial Instruments - Narrative (Details) board_foot in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019USD ($)derivativeboard_foot	Dec. 31, 2018USD ($)
Debt Securities, Available-for-sale [Line Items]
Equity securities, unrealized gain | $	$ 29,000	$ 43,000
Equity securities, unrealized loss | $	$ 0	$ 105,000
Net Long (Buying)
Debt Securities, Available-for-sale [Line Items]
Non-monetary notional amount (board fee) | board_foot	1,870
Number of derivative instruments held | derivative	17
Short
Debt Securities, Available-for-sale [Line Items]
Non-monetary notional amount (board fee) | board_foot	1,650
Number of derivative instruments held | derivative	15

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - Line of Credit - Revolving Credit Facility - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Amount	$ 4,000,000
Revolving Credit Facility - SNB
Debt Instrument [Line Items]
Amount	$ 17,216,971	$ 0
Weighted-Average Interest Rate	4.52%	0.00%
Revolving Credit Facility - Comerica
Debt Instrument [Line Items]
Amount	$ 0	$ 9,500,000
Weighted-Average Interest Rate	0.00%	4.87%
Revolving Credit Facility - Gerber
Debt Instrument [Line Items]
Amount	$ 1,349,000	$ 0
Weighted-Average Interest Rate	7.75%	0.00%
Revolving Credit Facility - Premier
Debt Instrument [Line Items]
Amount	$ 2,639,000	$ 0
Weighted-Average Interest Rate	6.75%	0.00%

Debt - Digirad Loan Agreements

Debt - Digirad Loan Agreements (Details) - USD ($)	Mar. 29, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Debt issuance costs written-off		$ 0	$ 0	$ 151,000	$ 43,000
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		2,800,000		2,800,000
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		$ 100,000
Board of Directors Chairman
Debt Instrument [Line Items]
Obligations under the Limited Guaranty	$ 1,500,000

Debt - ATRN Loan Agreements (De

Debt - ATRN Loan Agreements (Details) - Revolving Credit Facility - Line of Credit - USD ($)	Sep. 30, 2019	Dec. 31, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Debt outstanding	$ 4,000,000
Revolving Credit Facility - Gerber
Debt Instrument [Line Items]
Debt outstanding	1,349,000	$ 0
Maximum borrowing capacity	4,000,000
Revolving Credit Facility - Premier
Debt Instrument [Line Items]
Debt outstanding	2,639,000	$ 0
Maximum borrowing capacity	$ 3,000,000		$ 3,000,000

Debt - KBS Loan Agreement (Deta

Debt - KBS Loan Agreement (Details) - Revolving Credit Facility - Line of Credit - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2017	Sep. 10, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Debt outstanding	$ 4,000,000
Revolving Credit Facility - Gerber
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 4,000,000
Commitment fee percentage	1.50%
Monthly collateral monitoring fee percentage	0.10%
Debt outstanding	$ 1,349,000			$ 0
Annual review delivery period		105 days
Collateral amount			$ 300,000
Deposit			$ 200,000
Revolving Credit Facility - Gerber | Prime Rate
Debt Instrument [Line Items]
Interest rate	2.75%
KBS Loan Agreement, Maturing February 22, 2019
Debt Instrument [Line Items]
Automatic extension period	1 year
KBS Loan Agreement, Maturing February 22, 2020
Debt Instrument [Line Items]
Automatic extension period	1 year

Debt - EBGL Line of Credit (Det

Debt - EBGL Line of Credit (Details) - Revolving Credit Facility - Line of Credit - Revolving Credit Facility - Premier - USD ($)	6 Months Ended
	Jun. 30, 2017	Sep. 30, 2019
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,000,000	$ 3,000,000
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%

Income Tax (Details)

Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax benefit, continued operations	$ (2)	$ 379	$ 168	$ 940
Unrecognized tax benefits	3,600		3,600
Unrecognized tax benefits that would impact effective tax rate	3,200		3,200
MDSS post-warranty service business | Discontinued operations, disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense, discontinued operations	$ 0	$ 186	$ 84	$ 900

Segments (Details)

Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Consolidated revenue	$ 28,333	$ 25,707	$ 78,043	$ 78,252
Consolidated gross profit	5,196	4,358	14,181	14,532
(Loss) income from operations by segment	(1,209)	(783)	(3,490)	(2,640)
Segment loss from operations	(151)	(783)	(1,432)	(2,164)
Goodwill impairment	0	0	0	(476)
Merger and finance costs	(1,058)	0	(2,058)	0
Total depreciation and amortization	2,001	1,902	5,661	6,471
Diagnostic Services
Segment Reporting Information [Line Items]
Consolidated revenue	11,670	12,412	35,714	37,704
Total depreciation and amortization	333	510	942	1,750
Diagnostic Imaging
Segment Reporting Information [Line Items]
Consolidated revenue	3,351	2,803	8,923	8,401
Total depreciation and amortization	64	70	215	221
Mobile Healthcare
Segment Reporting Information [Line Items]
Consolidated revenue	10,575	10,492	30,669	32,147
Total depreciation and amortization	1,272	1,322	4,137	4,500
Building and Construction
Segment Reporting Information [Line Items]
Consolidated revenue	2,729		2,729
Total depreciation and amortization	124	0	124	0
Real Estate and Investments
Segment Reporting Information [Line Items]
Consolidated revenue	8		8
Total depreciation and amortization	208	0	243	0
Operating Segments | Diagnostic Services
Segment Reporting Information [Line Items]
Consolidated revenue	11,670	12,412	35,714	37,704
Consolidated gross profit	2,162	2,404	7,548	7,620
(Loss) income from operations by segment	1,344	1,761	5,037	3,850
Operating Segments | Diagnostic Imaging
Segment Reporting Information [Line Items]
Consolidated revenue	3,351	2,803	8,923	8,401
Consolidated gross profit	1,174	1,154	3,040	3,665
(Loss) income from operations by segment	755	160	1,663	1,814
Operating Segments | Mobile Healthcare
Segment Reporting Information [Line Items]
Consolidated revenue	10,575	10,492	30,669	32,147
Consolidated gross profit	1,441	800	3,351	3,247
(Loss) income from operations by segment	551	(192)	367	(171)
Operating Segments | Building and Construction
Segment Reporting Information [Line Items]
Consolidated revenue	2,729	0	2,729	0
Consolidated gross profit	477	0	477	0
(Loss) income from operations by segment	26	0	26	0
Operating Segments | Real Estate and Investments
Segment Reporting Information [Line Items]
Consolidated revenue	43	0	43	0
Consolidated gross profit	(23)	0	(200)	0
(Loss) income from operations by segment	(61)	0	(260)	0
Corporate And Reconciling Items
Segment Reporting Information [Line Items]
Consolidated revenue	(35)	0	(35)	0
Consolidated gross profit	(35)	0	(35)	0
(Loss) income from operations by segment	(35)	0	(35)	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
(Loss) income from operations by segment	$ (2,731)	$ (2,512)	$ (8,230)	$ (7,657)

Related Party Transactions (Det

Related Party Transactions (Details)

Sep. 10, 2019USD ($)$ / shares

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

Sep. 30, 2019USD ($)shares

Mar. 29, 2019USD ($)

Dec. 31, 2018shares

Dec. 17, 2018USD ($)

Related Party Transaction [Line Items]

Investment made as part of Subscription Agreement

$ 1,000,000

Shares acquired (in shares) | shares

71,429

Shares owned (in shares) | shares

2,048,743

2,024,979

Gross proceeds from private placement

$ 3,000,000

Board of Directors Chairman

Related Party Transaction [Line Items]

Obligations under the Limited Guaranty

$ 1,500,000

Number of preferred stock shares acquired (in shares) | shares

100,000

Share price (in dollars per share) | $ / shares

$ 10

Aggregate proceeds

$ 1,000,000

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

Cash payment

$ 700,000

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

North Country Steel Inc.

Related Party Transaction [Line Items]

Lease period

5 years

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

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

$ 1,000,000

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.

Related Party Transaction [Line Items]

Share price (in dollars per share) | $ / shares

$ 10

Aggregate proceeds

$ 17,452,000

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	Sep. 30, 2019$ / shares
Temporary Equity Disclosure [Abstract]
Preferred Stock, dividend rate	0.1	0.1
Preferred stock, liquidation preference per share (USD per share)		$ 10