Lantheus (LNTH) 10-Q 30 Apr 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 24, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	LNTH
Entity Registrant Name	LANTHEUS HOLDINGS, INC.
Entity Central Index Key	0001521036
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	true
Entity Small Business	false
Entity Ex Transition Period	true
Entity Common Stock, Shares Outstanding (in shares)		38,820,101

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 112,061	$ 113,401
Accounts receivable, net	45,021	43,753
Inventory	32,044	33,019
Other current assets	6,372	5,242
Total current assets	195,498	195,415
Property, plant and equipment, net	112,211	107,888
Intangibles, net	8,686	9,133
Goodwill	15,714	15,714
Deferred tax assets, net	79,755	81,449
Other long-term assets	32,044	30,232
Total assets	443,908	439,831
Current liabilities
Current portion of long-term debt and other borrowings	2,854	2,750
Revolving line of credit	0	0
Accounts payable	15,323	17,955
Accrued expenses and other liabilities	24,591	32,050
Total current liabilities	42,768	52,755
Asset retirement obligations	11,895	11,572
Long-term debt, net and other borrowings	263,293	263,709
Other long-term liabilities	42,739	40,793
Total liabilities	360,695	368,829
Commitments and contingencies (See Note 14)
Stockholders’ equity
Preferred stock ($0.01 par value, 25,000 shares authorized; no shares issued and outstanding)	0	0
Common stock ($0.01 par value, 250,000 shares authorized; 38,818 and 38,466 shares issued and outstanding, respectively)	388	385
Additional paid-in capital	242,068	239,865
Accumulated deficit	(158,191)	(168,140)
Accumulated other comprehensive loss	(1,052)	(1,108)
Total stockholders’ equity	83,213	71,002
Total liabilities and stockholders’ equity	$ 443,908	$ 439,831

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	25,000	25,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	38,818,000	38,466,000
Common stock, shares outstanding (in shares)	38,818,000	38,466,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenues	$ 86,510	$ 82,630
Cost of goods sold	42,426	40,321
Gross profit	44,084	42,309
Operating expenses
Sales and marketing	10,397	10,640
General and administrative	12,589	12,543
Research and development	4,929	3,989
Total operating expenses	27,915	27,172
Operating income	16,169	15,137
Interest expense	4,592	4,050
Other income	(1,187)	(920)
Income before income taxes	12,764	12,007
Income tax expense	2,815	3,796
Net income	$ 9,949	$ 8,211
Net income per common share:
Basic (in dollars per share)	$ 0.26	$ 0.22
Diluted (in dollars per share)	$ 0.25	$ 0.21
Weighted-average common shares outstanding:
Basic (in shares)	38,603	37,886
Diluted (in shares)	39,787	39,493

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 9,949	$ 8,211
Other comprehensive income:
Foreign currency translation	56	0
Total other comprehensive income	56	0
Comprehensive income	$ 10,005	$ 8,211

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balance (in shares) at Dec. 31, 2017		37,765
Balance at Dec. 31, 2017	$ 23,291	$ 378	$ 232,960	$ (209,013)	$ (1,034)
Net income	8,211			8,211
Forfeiture of dividend equivalent right	355			355
Other comprehensive income	0				0
Stock option exercises and employee stock plan purchases (in shares)		94
Stock option exercises and employee stock plan purchases	720	$ 1	719
Vesting of restricted stock awards and units (in shares)		174
Vesting of restricted stock awards and units	0	$ 2	(2)
Shares withheld to cover taxes (in shares)		(36)
Shares withheld to cover taxes	(709)	$ (1)	(708)
Stock-based compensation	1,796		1,796
Balance (in shares) at Mar. 31, 2018		37,997
Balance at Mar. 31, 2018	33,664	$ 380	234,765	(200,447)	(1,034)
Balance (in shares) at Dec. 31, 2018		38,466
Balance at Dec. 31, 2018	71,002	$ 385	239,865	(168,140)	(1,108)
Net income	9,949			9,949
Other comprehensive income	56				56
Stock option exercises and employee stock plan purchases (in shares)		37
Stock option exercises and employee stock plan purchases	606	$ 0	606
Vesting of restricted stock awards and units (in shares)		365
Vesting of restricted stock awards and units	0	$ 4	(4)
Shares withheld to cover taxes (in shares)		(50)
Shares withheld to cover taxes	(1,120)	$ (1)	(1,119)
Stock-based compensation	2,720		2,720
Balance (in shares) at Mar. 31, 2019		38,818
Balance at Mar. 31, 2019	$ 83,213	$ 388	$ 242,068	$ (158,191)	$ (1,052)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities
Net income	$ 9,949	$ 8,211
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation, amortization and accretion	3,323	3,596
Amortization of debt related costs	320	320
Provision for bad debt	(190)	195
Provision for excess and obsolete inventory	511	1,220
Stock-based compensation	2,720	1,796
Deferred taxes	1,741	2,923
Long-term income tax receivable	(802)	(841)
Long-term income tax payable and other long-term liabilities	1,018	854
Other	(6)	(46)
Increases (decreases) in cash from operating assets and liabilities:
Accounts receivable	(1,040)	(7,816)
Inventory	465	(6,579)
Other current assets	(1,152)	(1,003)
Accounts payable	1,458	2,160
Accrued expenses and other liabilities	(7,847)	(5,656)
Net cash provided by (used in) operating activities	10,468	(666)
Investing activities
Capital expenditures	(10,550)	(2,135)
Proceeds from sales of assets	0	1,000
Net cash used in investing activities	(10,550)	(1,135)
Financing activities
Payments on long-term debt and other borrowings	(717)	(715)
Proceeds from stock option exercises	324	514
Proceeds from issuance of common stock	282	206
Payments for minimum statutory tax withholding related to net share settlement of equity awards	(1,120)	(709)
Net cash used in financing activities	(1,231)	(704)
Effect of foreign exchange rates on cash and cash equivalents	(27)	(46)
Net decrease in cash and cash equivalents	(1,340)	(2,551)
Cash and cash equivalents, beginning of period	113,401	76,290
Cash and cash equivalents, end of period	$ 112,061	$ 73,739

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Note Regarding Company References and Trademarks Unless the context otherwise requires, references to the “Company” and “Lantheus” refer to Lantheus Holdings, Inc. and its direct and indirect wholly-owned subsidiaries, references to “Holdings” refer to Lantheus Holdings, Inc. and not to any of its subsidiaries, and references to “LMI” refer to Lantheus Medical Imaging, Inc., the direct subsidiary of Holdings. Solely for convenience, the Company refers to trademarks, service marks and trade names without the TM, SM and ® symbols. Those references are not intended to indicate, in any way, that the Company will not assert, to the fullest extent permitted under applicable law, its rights to its trademarks, service marks and trade names. Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of Lantheus Holdings, Inc. and its direct and indirect wholly-owned subsidiaries and have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not include all of the information and notes required by generally accepted accounting principles in the United States of America (“U.S. GAAP”) for complete financial statements. In the opinion of management, all adjustments (consisting of normal and recurring adjustments) considered necessary for a fair statement have been included. The results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ended December 31, 2019 or any future period. The 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 notes required by U.S. GAAP for complete financial statements. These condensed consolidated financial statements and accompanying notes should be read in conjunction with the consolidated financial statements and notes thereto included in Item 8 of the Company’s most recent Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities Exchange Commission (“SEC”) on February 20, 2019.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Recent Accounting Pronouncements Standard Description Effective Date for Company Effect on the Condensed Consolidated Financial Statements Accounting Standards Adopted During the Three Months Ended March 31, 2019 ASU 2016-02, Leases (Topic 842) This ASU supersedes existing guidance on accounting for leases in “Leases (Topic 840)” and generally requires all leases to be recognized on the balance sheet. In July 2018, an amendment was made that allows companies the option of using the effective date of the new standard as the initial application date (at the beginning of the period in which it is adopted, rather than at the beginning of the earliest comparative period). January 1, 2019 See Note 11, "Leases" for the required disclosures related to the impact of adopting this standard. The adoption of this standard resulted in the recording of an additional lease asset and lease liability of approximately $1.1 million as of January 1, 2019. The standard did not have a material impact on the Company’s condensed consolidated statements of operations, equity or cash flows.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes revenue by revenue source and reportable segment as follows: Three Months Ended Three Months Ended Major Products/Service Lines (in thousands) U.S. International Total U.S. International Total Product revenue, net (1) $ 75,434 $ 10,549 $ 85,983 $ 71,488 $ 10,580 $ 82,068 License and royalty revenues — 527 527 — 562 562 Total revenues $ 75,434 $ 11,076 $ 86,510 $ 71,488 $ 11,142 $ 82,630 ________________________________ (1) The Company’s principal products include DEFINITY and TechneLite and are categorized within product revenue, net. The Company applies the same revenue recognition policies and judgments for all of its principal products. The Company recognized certain revenues as follows: (in thousands) Three Months Ended March 31, 2019 Three Months Ended March 31, 2018 Amounts included in the contract liability at the beginning of the period $ 8 $ 8 Performance obligations satisfied (or partially satisfied) in previous periods $ — $ — The Company’s performance obligations are typically part of contracts that have an original expected duration of one year or less. As such, under the optional exemption provided by ASC 606-10-50-14, the Company is not disclosing the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially satisfied) as of the end of the reporting period.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In order to increase consistency and comparability of fair value measurements, financial instruments are categorized based on a hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three broad levels, which are described below: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.) and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs that reflect a Company’s estimates about the assumptions that market participants would use in pricing the asset or liability. The Company develops these inputs based on the best information available, including its own data. The Company’s financial assets measured at fair value on a recurring basis consist of money market funds. The Company invests excess cash from its operating cash accounts in overnight investments and reflects these amounts in cash and cash equivalents in the condensed consolidated balance sheets at fair value using quoted prices in active markets for identical assets. The tables below present information about the Company’s assets and liabilities measured at fair value on a recurring basis: March 31, 2019 (in thousands) Total Fair Value Level 1 Level 2 Level 3 Money market $ 55,730 $ 55,730 $ — $ — Total $ 55,730 $ 55,730 $ — $ — December 31, 2018 (in thousands) Total Fair Value Level 1 Level 2 Level 3 Money market $ 61,391 $ 61,391 $ — $ — Total $ 61,391 $ 61,391 $ — $ —

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate for the full year, adjusted for any discrete events which are recorded in the period they occur. The Company’s effective tax rate in fiscal 2019 differs from the U.S. federal statutory rate of 21% principally due to the impact of state taxes and the accrual of interest on uncertain tax positions, offset by tax benefits arising from stock compensation deductions. Cumulative adjustments to the tax provision are recorded in the interim period in which a change in the estimated annual effective tax rate is determined. The Company’s income tax expense is presented below: Three Months Ended (in thousands) 2019 2018 Income tax expense $ 2,815 $ 3,796 The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realizability of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more-likely-than-not realizable, the Company evaluates all available positive and negative evidence, and weighs the objective evidence and expected impact. The Company continues to record a valuation allowance against certain foreign deferred tax assets. In connection with the Company’s acquisition of the medical imaging business from Bristol Myers Squibb (“BMS”) in 2008, the Company entered into a tax indemnification agreement with BMS. A long-term receivable is recorded to account for the expected value to the Company of future indemnification payments, net of actual tax benefits received. The tax indemnification receivable is recognized within other long-term assets. Changes in the tax indemnification asset are recognized within other income in the condensed consolidated statement of operations. In accordance with the Company’s accounting policy, the change in the tax liability, penalties and interest associated with these obligations (net of any offsetting federal or state benefit) is recognized within income tax expense. Accordingly, as these reserves change, adjustments are included in income tax expense while the offsetting adjustment is included in other income. Assuming that the receivable from BMS continues to be considered recoverable by the Company, there will be no effect on net income and no net cash outflows related to these liabilities.

Inventory

Inventory	3 Months Ended
	Mar. 31, 2019
Inventory Disclosure [Abstract]
Inventory	Inventory Inventory consisted of the following: (in thousands) March 31, December 31, Raw materials $ 11,521 $ 11,100 Work in process 9,007 4,261 Finished goods 11,516 17,658 Total inventory $ 32,044 $ 33,019

Property, Plant and Equipment,

Property, Plant and Equipment, Net	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net, consisted of the following: (in thousands) March 31, December 31, Land $ 13,450 $ 13,450 Buildings 64,957 64,444 Machinery, equipment and fixtures 70,133 69,298 Computer software 19,846 19,266 Construction in progress 29,034 24,169 197,420 190,627 Less: accumulated depreciation and amortization (85,209 ) (82,739 ) Total property, plant and equipment, net $ 112,211 $ 107,888 Depreciation and amortization expense related to property, plant and equipment, net, was $2.5 million and $2.6 million for the three months ended March 31, 2019 and 2018 , respectively.

Asset Retirement Obligations

Asset Retirement Obligations	3 Months Ended
	Mar. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	Asset Retirement Obligations The Company considers its legal obligation to remediate its facilities upon a decommissioning of its radioactive-related operations as an asset retirement obligation. The Company has production facilities which manufacture and process radioactive materials at its North Billerica, Massachusetts and San Juan, Puerto Rico sites. The Company is required to provide the U.S. Nuclear Regulatory Commission and Massachusetts Department of Public Health financial assurance demonstrating the Company’s ability to fund the decommissioning of its North Billerica, Massachusetts production facility upon closure, although the Company does not intend to close the facility. The Company has provided this financial assurance in the form of a $28.2 million surety bond. The fair value of a liability for asset retirement obligations is recognized in the period in which the liability is incurred. As of March 31, 2019 , the liability is measured at the present value of the obligation expected to be incurred, of approximately $26.9 million , and is adjusted in subsequent periods as accretion expense is recorded. The corresponding asset retirement costs are capitalized as part of the carrying values of the related long-lived assets and depreciated over the assets’ useful lives. The following table provides a summary of the changes in the Company’s asset retirement obligations: (in thousands) Amount Balance at January 1, 2019 $ 11,572 Accretion expense 323 Balance at March 31, 2019 $ 11,895

Long-term debt, net and other b

Long-term debt, net and other borrowings	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Long-term debt, net and other borrowings	Long-term debt, net and other borrowings As of March 31, 2019 , the Company’s maturities of principal obligations under its long-term debt and other borrowings are as follows: (in thousands) Amount Remainder of 2019 $ 2,063 2020 2,750 2021 2,750 2022 261,937 Total principal outstanding 269,500 Unamortized debt discount (1,471 ) Unamortized debt issuance costs (1,992 ) Finance lease liabilities 110 Total 266,147 Less: current portion (2,854 ) Total long-term debt, net and other borrowings $ 263,293 At March 31, 2019, the Company’s interest rate under its long-term debt was 6.2% .

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation The following table presents stock-based compensation expense recognized in the Company’s accompanying condensed consolidated statements of operations: Three Months Ended (in thousands) 2019 2018 Cost of goods sold $ 440 $ 229 Sales and marketing 451 302 General and administrative 1,574 980 Research and development 255 285 Total stock-based compensation expense $ 2,720 $ 1,796

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	Leases Adoption of ASC Topic 842, “Leases” The Company adopted ASC 842 on January 1, 2019, using the prospective approach which provides a method for recording existing leases at adoption using the effective date of the standard as its initial application date. ASC 842 generally requires all leases to be recognized on the balance sheet. In addition, the Company elected the relief package of practical expedients permitted under the transition guidance within the new standard, which, among other things, allowed the Company not to reassess whether any expired or existing contracts are or contain leases, the lease classification for any expired or existing leases and initial direct costs for any existing leases. The reported results for 2019 reflect the application of ASC 842 guidance while the reported results for 2018 were prepared under the guidance of ASC 840, Leases. The adoption of ASC 842 resulted in the recording of an additional lease asset and lease liability of approximately $1.1 million as of January 1, 2019. ASC 842 did not materially impact the Company’s condensed consolidated results of operations, equity or cash flows as of the adoption date or for the periods presented. Leases The Company determines if an arrangement is a lease at inception. The Company has operating and finance leases for vehicles, corporate offices and certain equipment. Operating lease right-of-use (“ROU”) assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. Lease agreements with lease and non-lease components are accounted for separately. As the Company’s leases do not provide an implicit rate, the Company used the incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet as the Company has elected to apply the short term lease exemption. The Company recognizes lease expense for these leases on a straight-line basis over the lease term. Operating and finance lease assets and liabilities are as follows: (in thousands) Classification March 31, 2019 Assets Operating Other long-term assets $ 1,062 Finance Property, plant and equipment, net 107 Total leased assets $ 1,169 Liabilities Current Operating Accrued expenses and other liabilities $ 180 Finance Current portion of long-term debt and other borrowings 104 Noncurrent Operating Other long-term liabilities 958 Finance Long-term debt, net and other borrowings 6 Total leased liabilities $ 1,248 The components of lease expense were as follows: (in thousands) Three Months Ended Operating Lease Expense $ 56 Finance Lease Expense Amortization of ROU assets 29 Interest on lease liabilities 2 Short Term Lease Expense 23 Total Lease Expense $ 110 Other information related to leases were as follows: March 31, 2019 Weighted average remaining lease term (Years): Operating leases 5.5 Finance leases 1.0 Weighted average discount rate: Operating leases 5.1% Finance leases 5.9% (in thousands) Three Months Ended Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases 57 Operating cash flows from finance leases 2 Financing cash flows from finance leases 30 ROU assets obtained in exchange for lease obligations: Operating leases — Finance leases — Future minimum lease payments under non-cancellable leases as of March 31, 2019 were as follows: (in thousands) Operating Leases Finance Leases Remainder of 2019 $ 173 $ 93 2020 238 21 2021 238 — 2022 238 — 2023 238 — Thereafter 178 — Total future minimum lease payments 1,303 114 Less: interest 165 4 Total $ 1,138 $ 110
Leases	Leases Adoption of ASC Topic 842, “Leases” The Company adopted ASC 842 on January 1, 2019, using the prospective approach which provides a method for recording existing leases at adoption using the effective date of the standard as its initial application date. ASC 842 generally requires all leases to be recognized on the balance sheet. In addition, the Company elected the relief package of practical expedients permitted under the transition guidance within the new standard, which, among other things, allowed the Company not to reassess whether any expired or existing contracts are or contain leases, the lease classification for any expired or existing leases and initial direct costs for any existing leases. The reported results for 2019 reflect the application of ASC 842 guidance while the reported results for 2018 were prepared under the guidance of ASC 840, Leases. The adoption of ASC 842 resulted in the recording of an additional lease asset and lease liability of approximately $1.1 million as of January 1, 2019. ASC 842 did not materially impact the Company’s condensed consolidated results of operations, equity or cash flows as of the adoption date or for the periods presented. Leases The Company determines if an arrangement is a lease at inception. The Company has operating and finance leases for vehicles, corporate offices and certain equipment. Operating lease right-of-use (“ROU”) assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. Lease agreements with lease and non-lease components are accounted for separately. As the Company’s leases do not provide an implicit rate, the Company used the incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet as the Company has elected to apply the short term lease exemption. The Company recognizes lease expense for these leases on a straight-line basis over the lease term. Operating and finance lease assets and liabilities are as follows: (in thousands) Classification March 31, 2019 Assets Operating Other long-term assets $ 1,062 Finance Property, plant and equipment, net 107 Total leased assets $ 1,169 Liabilities Current Operating Accrued expenses and other liabilities $ 180 Finance Current portion of long-term debt and other borrowings 104 Noncurrent Operating Other long-term liabilities 958 Finance Long-term debt, net and other borrowings 6 Total leased liabilities $ 1,248 The components of lease expense were as follows: (in thousands) Three Months Ended Operating Lease Expense $ 56 Finance Lease Expense Amortization of ROU assets 29 Interest on lease liabilities 2 Short Term Lease Expense 23 Total Lease Expense $ 110 Other information related to leases were as follows: March 31, 2019 Weighted average remaining lease term (Years): Operating leases 5.5 Finance leases 1.0 Weighted average discount rate: Operating leases 5.1% Finance leases 5.9% (in thousands) Three Months Ended Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases 57 Operating cash flows from finance leases 2 Financing cash flows from finance leases 30 ROU assets obtained in exchange for lease obligations: Operating leases — Finance leases — Future minimum lease payments under non-cancellable leases as of March 31, 2019 were as follows: (in thousands) Operating Leases Finance Leases Remainder of 2019 $ 173 $ 93 2020 238 21 2021 238 — 2022 238 — 2023 238 — Thereafter 178 — Total future minimum lease payments 1,303 114 Less: interest 165 4 Total $ 1,138 $ 110

Net Income Per Common Share

Net Income Per Common Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Net Income Per Common Share	Net Income Per Common Share A summary of net income per common share is presented below: Three Months Ended (in thousands, except per share amounts) 2019 2018 Net income $ 9,949 $ 8,211 Basic weighted-average common shares outstanding 38,603 37,886 Effect of dilutive stock options 58 150 Effect of dilutive restricted stock 1,126 1,457 Diluted weighted-average common shares outstanding 39,787 39,493 Basic income per common share $ 0.26 $ 0.22 Diluted income per common share $ 0.25 $ 0.21 Antidilutive securities excluded from diluted net income per common share 222 86

Other Income

Other Income	3 Months Ended
	Mar. 31, 2019
Other Income and Expenses [Abstract]
Other Income	Other Income Other income consisted of the following: Three Months Ended (in thousands) 2019 2018 Foreign currency gains $ 42 $ 72 Tax indemnification income 802 841 Interest income 283 7 Other 60 — Total other income $ 1,187 $ 920

Legal Proceedings and Contingen

Legal Proceedings and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings and Contingencies	Legal Proceedings and Contingencies From time to time, the Company is a party to various legal proceedings arising in the ordinary course of business. In addition, the Company has in the past been, and may in the future be, subject to investigations by governmental and regulatory authorities, which expose it to greater risks associated with litigation, regulatory or other proceedings, as a result of which the Company could be required to pay significant fines or penalties. The costs and outcome of litigation, regulatory or other proceedings cannot be predicted with certainty, and some lawsuits, claims, actions or proceedings may be disposed of unfavorably to the Company. In addition, intellectual property disputes often have a risk of injunctive relief which, if imposed against the Company, could materially and adversely affect its financial condition or results of operations. The Company is currently in arbitration with Pharmalucence in connection with a Manufacturing and Supply Agreement dated November 12, 2013, under which Pharmalucence agreed to manufacture and supply DEFINITY for the Company. The commercial arrangement contemplated by that agreement was repeatedly delayed and ultimately never successfully realized. After extended settlement discussions between Sun Pharma, the ultimate parent of Pharmalucence, and the Company, which did not lead to a mutually acceptable outcome, on November 10, 2017, the Company filed an arbitration demand (and later an amended arbitration demand) with the American Arbitration Association against Pharmalucence, alleging breach of contract, breach of the covenant of good faith and fair dealing, tortious misrepresentation and violation of the Massachusetts Consumer Protection Law, also known as Chapter 93A. The Company is seeking monetary damages but cannot predict the outcome of this dispute resolution proceeding and whether the Company will be able to obtain any financial recovery as a result of this proceeding. As of March 31, 2019 , except as disclosed above the Company had no material ongoing litigation in which the Company was a party. In addition, the Company had no material ongoing regulatory or other proceedings and no knowledge of any investigations by government or regulatory authorities in which the Company is a target, in either case, that the Company believes could have a material and adverse effect on its current business.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information The Company reports two operating segments, U.S. and International, based on geographic customer base. The results of these operating segments are regularly reviewed by the Company’s chief operating decision maker, the President and Chief Executive Officer. The Company’s segments derive revenues through the manufacture, marketing, selling and distribution of medical imaging products, focused primarily on cardiovascular diagnostic imaging. All goodwill has been allocated to the U.S. operating segment. The Company does not identify or allocate assets to its segments. Selected information regarding the Company’s segments is provided as follows: Three Months Ended (in thousands) 2019 2018 Revenues from external customers U.S. $ 75,434 $ 71,488 International 11,076 11,142 Total revenues from external customers $ 86,510 $ 82,630 Operating income U.S. $ 14,584 $ 14,156 International 1,585 981 Total operating income 16,169 15,137 Interest expense 4,592 4,050 Other income (1,187 ) (920 ) Income before income taxes $ 12,764 $ 12,007

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements include the accounts of Lantheus Holdings, Inc. and its direct and indirect wholly-owned subsidiaries and have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not include all of the information and notes required by generally accepted accounting principles in the United States of America (“U.S. GAAP”) for complete financial statements. In the opinion of management, all adjustments (consisting of normal and recurring adjustments) considered necessary for a fair statement have been included. The results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ended December 31, 2019 or any future period. The 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 notes required by U.S. GAAP for complete financial statements. These condensed consolidated financial statements and accompanying notes should be read in conjunction with the consolidated financial statements and notes thereto included in Item 8 of the Company’s most recent Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities Exchange Commission (“SEC”) on February 20, 2019.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Standard Description Effective Date for Company Effect on the Condensed Consolidated Financial Statements Accounting Standards Adopted During the Three Months Ended March 31, 2019 ASU 2016-02, Leases (Topic 842) This ASU supersedes existing guidance on accounting for leases in “Leases (Topic 840)” and generally requires all leases to be recognized on the balance sheet. In July 2018, an amendment was made that allows companies the option of using the effective date of the new standard as the initial application date (at the beginning of the period in which it is adopted, rather than at the beginning of the earliest comparative period). January 1, 2019 See Note 11, "Leases" for the required disclosures related to the impact of adopting this standard. The adoption of this standard resulted in the recording of an additional lease asset and lease liability of approximately $1.1 million as of January 1, 2019. The standard did not have a material impact on the Company’s condensed consolidated statements of operations, equity or cash flows.
Lessee, leases	Leases The Company determines if an arrangement is a lease at inception. The Company has operating and finance leases for vehicles, corporate offices and certain equipment. Operating lease right-of-use (“ROU”) assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. Lease agreements with lease and non-lease components are accounted for separately. As the Company’s leases do not provide an implicit rate, the Company used the incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet as the Company has elected to apply the short term lease exemption. The Company recognizes lease expense for these leases on a straight-line basis over the lease term.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Standard Description Effective Date for Company Effect on the Condensed Consolidated Financial Statements Accounting Standards Adopted During the Three Months Ended March 31, 2019 ASU 2016-02, Leases (Topic 842) This ASU supersedes existing guidance on accounting for leases in “Leases (Topic 840)” and generally requires all leases to be recognized on the balance sheet. In July 2018, an amendment was made that allows companies the option of using the effective date of the new standard as the initial application date (at the beginning of the period in which it is adopted, rather than at the beginning of the earliest comparative period). January 1, 2019 See Note 11, "Leases" for the required disclosures related to the impact of adopting this standard. The adoption of this standard resulted in the recording of an additional lease asset and lease liability of approximately $1.1 million as of January 1, 2019. The standard did not have a material impact on the Company’s condensed consolidated statements of operations, equity or cash flows.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Schedule of disaggregation of revenue	The following table summarizes revenue by revenue source and reportable segment as follows: Three Months Ended Three Months Ended Major Products/Service Lines (in thousands) U.S. International Total U.S. International Total Product revenue, net (1) $ 75,434 $ 10,549 $ 85,983 $ 71,488 $ 10,580 $ 82,068 License and royalty revenues — 527 527 — 562 562 Total revenues $ 75,434 $ 11,076 $ 86,510 $ 71,488 $ 11,142 $ 82,630 ________________________________ (1) The Company’s principal products include DEFINITY and TechneLite and are categorized within product revenue, net. The Company applies the same revenue recognition policies and judgments for all of its principal products.
Schedule of contract liabilities	The Company recognized certain revenues as follows: (in thousands) Three Months Ended March 31, 2019 Three Months Ended March 31, 2018 Amounts included in the contract liability at the beginning of the period $ 8 $ 8 Performance obligations satisfied (or partially satisfied) in previous periods $ — $ —

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	The tables below present information about the Company’s assets and liabilities measured at fair value on a recurring basis: March 31, 2019 (in thousands) Total Fair Value Level 1 Level 2 Level 3 Money market $ 55,730 $ 55,730 $ — $ — Total $ 55,730 $ 55,730 $ — $ — December 31, 2018 (in thousands) Total Fair Value Level 1 Level 2 Level 3 Money market $ 61,391 $ 61,391 $ — $ — Total $ 61,391 $ 61,391 $ — $ —

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of income tax expense	The Company’s income tax expense is presented below: Three Months Ended (in thousands) 2019 2018 Income tax expense $ 2,815 $ 3,796

Inventory (Tables)

Inventory (Tables)	3 Months Ended
	Mar. 31, 2019
Inventory Disclosure [Abstract]
Schedule of inventory	Inventory consisted of the following: (in thousands) March 31, December 31, Raw materials $ 11,521 $ 11,100 Work in process 9,007 4,261 Finished goods 11,516 17,658 Total inventory $ 32,044 $ 33,019

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Schedule of property, plant, and equipment, net	Property, plant and equipment, net, consisted of the following: (in thousands) March 31, December 31, Land $ 13,450 $ 13,450 Buildings 64,957 64,444 Machinery, equipment and fixtures 70,133 69,298 Computer software 19,846 19,266 Construction in progress 29,034 24,169 197,420 190,627 Less: accumulated depreciation and amortization (85,209 ) (82,739 ) Total property, plant and equipment, net $ 112,211 $ 107,888

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	3 Months Ended
	Mar. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]
Summary of changes in asset retirement obligations	The following table provides a summary of the changes in the Company’s asset retirement obligations: (in thousands) Amount Balance at January 1, 2019 $ 11,572 Accretion expense 323 Balance at March 31, 2019 $ 11,895

Long-term debt, net and other_2

Long-term debt, net and other borrowings (Tables)	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Schedule of maturities of principal obligations under new term facility	As of March 31, 2019 , the Company’s maturities of principal obligations under its long-term debt and other borrowings are as follows: (in thousands) Amount Remainder of 2019 $ 2,063 2020 2,750 2021 2,750 2022 261,937 Total principal outstanding 269,500 Unamortized debt discount (1,471 ) Unamortized debt issuance costs (1,992 ) Finance lease liabilities 110 Total 266,147 Less: current portion (2,854 ) Total long-term debt, net and other borrowings $ 263,293

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of stock-based compensation expense recognized	The following table presents stock-based compensation expense recognized in the Company’s accompanying condensed consolidated statements of operations: Three Months Ended (in thousands) 2019 2018 Cost of goods sold $ 440 $ 229 Sales and marketing 451 302 General and administrative 1,574 980 Research and development 255 285 Total stock-based compensation expense $ 2,720 $ 1,796

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Schedule of operating and finance lease assets and liabilities	Operating and finance lease assets and liabilities are as follows: (in thousands) Classification March 31, 2019 Assets Operating Other long-term assets $ 1,062 Finance Property, plant and equipment, net 107 Total leased assets $ 1,169 Liabilities Current Operating Accrued expenses and other liabilities $ 180 Finance Current portion of long-term debt and other borrowings 104 Noncurrent Operating Other long-term liabilities 958 Finance Long-term debt, net and other borrowings 6 Total leased liabilities $ 1,248
Schedule of other information related to leases	Other information related to leases were as follows: March 31, 2019 Weighted average remaining lease term (Years): Operating leases 5.5 Finance leases 1.0 Weighted average discount rate: Operating leases 5.1% Finance leases 5.9% (in thousands) Three Months Ended Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases 57 Operating cash flows from finance leases 2 Financing cash flows from finance leases 30 ROU assets obtained in exchange for lease obligations: Operating leases — Finance leases —
Schedule of components of lease expense	The components of lease expense were as follows: (in thousands) Three Months Ended Operating Lease Expense $ 56 Finance Lease Expense Amortization of ROU assets 29 Interest on lease liabilities 2 Short Term Lease Expense 23 Total Lease Expense $ 110
Schedule of future minimum lease payments under operating leases	Future minimum lease payments under non-cancellable leases as of March 31, 2019 were as follows: (in thousands) Operating Leases Finance Leases Remainder of 2019 $ 173 $ 93 2020 238 21 2021 238 — 2022 238 — 2023 238 — Thereafter 178 — Total future minimum lease payments 1,303 114 Less: interest 165 4 Total $ 1,138 $ 110
Schedule of future minimum lease payments under finance leases	Future minimum lease payments under non-cancellable leases as of March 31, 2019 were as follows: (in thousands) Operating Leases Finance Leases Remainder of 2019 $ 173 $ 93 2020 238 21 2021 238 — 2022 238 — 2023 238 — Thereafter 178 — Total future minimum lease payments 1,303 114 Less: interest 165 4 Total $ 1,138 $ 110

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Summary of net income per common share	A summary of net income per common share is presented below: Three Months Ended (in thousands, except per share amounts) 2019 2018 Net income $ 9,949 $ 8,211 Basic weighted-average common shares outstanding 38,603 37,886 Effect of dilutive stock options 58 150 Effect of dilutive restricted stock 1,126 1,457 Diluted weighted-average common shares outstanding 39,787 39,493 Basic income per common share $ 0.26 $ 0.22 Diluted income per common share $ 0.25 $ 0.21 Antidilutive securities excluded from diluted net income per common share 222 86

Other Income (Tables)

Other Income (Tables)	3 Months Ended
	Mar. 31, 2019
Other Income and Expenses [Abstract]
Schedule of other income	Other income consisted of the following: Three Months Ended (in thousands) 2019 2018 Foreign currency gains $ 42 $ 72 Tax indemnification income 802 841 Interest income 283 7 Other 60 — Total other income $ 1,187 $ 920

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Schedule of segment information	Selected information regarding the Company’s segments is provided as follows: Three Months Ended (in thousands) 2019 2018 Revenues from external customers U.S. $ 75,434 $ 71,488 International 11,076 11,142 Total revenues from external customers $ 86,510 $ 82,630 Operating income U.S. $ 14,584 $ 14,156 International 1,585 981 Total operating income 16,169 15,137 Interest expense 4,592 4,050 Other income (1,187 ) (920 ) Income before income taxes $ 12,764 $ 12,007

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Total leased assets	$ 1,169
Total leased liabilities	$ 1,248
ASU 842
Lessee, Lease, Description [Line Items]
Total leased assets		$ 1,100
Total leased liabilities		$ 1,100

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 86,510	$ 82,630
Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	85,983	82,068
License and royalty revenues
Disaggregation of Revenue [Line Items]
Revenues	527	562
U.S.
Disaggregation of Revenue [Line Items]
Revenues	75,434	71,488
U.S. | Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	75,434	71,488
U.S. | License and royalty revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0
International
Disaggregation of Revenue [Line Items]
Revenues	11,076	11,142
International | Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	10,549	10,580
International | License and royalty revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 527	$ 562

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Contract Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Amounts included in the contract liability at the beginning of the period	$ 8	$ 8
Performance obligations satisfied (or partially satisfied) in previous periods	$ 0	$ 0

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	$ 55,730	$ 61,391
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	55,730	61,391
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0	0
Money market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market	55,730	61,391
Money market | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market	55,730	61,391
Money market | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market	0	0
Money market | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market	$ 0	$ 0

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 2,815	$ 3,796

Inventory (Details)

Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 11,521	$ 11,100
Work in process	9,007	4,261
Finished goods	11,516	17,658
Total inventory	$ 32,044	$ 33,019

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Property, Plant & Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	$ 197,420	$ 190,627
Less: accumulated depreciation and amortization	(85,209)	(82,739)
Total property, plant and equipment, net	112,211	107,888
Land
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	13,450	13,450
Buildings
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	64,957	64,444
Machinery, equipment and fixtures
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	70,133	69,298
Computer software
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	19,846	19,266
Construction in progress
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	$ 29,034	$ 24,169

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 2.5	$ 2.6

Asset Retirement Obligations -

Asset Retirement Obligations - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Asset Retirement Obligation Disclosure [Abstract]
Financial assurance in form of surety bond	$ 28.2
Asset retirement obligation liabilities expected, present value	$ 26.9

Asset Retirement Obligations _2

Asset Retirement Obligations - Summary of Changes in Asset Retirement Obligations (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset retirement obligations, beginning balance	$ 11,572
Accretion expense	323
Asset retirement obligations, ending balance	$ 11,895

Long-term debt, net and other_3

Long-term debt, net and other borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Remainder of 2019	$ 2,063
2020	2,750
2021	2,750
2022	261,937
Total principal outstanding	269,500
Unamortized debt discount	(1,471)
Unamortized debt issuance costs	(1,992)
Finance lease liabilities	110
Total	266,147
Less: current portion	(2,854)	$ (2,750)
Total long-term debt, net and other borrowings	$ 263,293	$ 263,709
Interest rate under long-term debt	6.20%

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 2,720	$ 1,796
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	440	229
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	451	302
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	1,574	980
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 255	$ 285

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Total leased assets	$ 1,169
Total leased liabilities	$ 1,248
ASU 842
Lessee, Lease, Description [Line Items]
Total leased assets		$ 1,100
Total leased liabilities		$ 1,100

Leases - Operating and Financin

Leases - Operating and Financing Lease Assets and Liabilities (Details) $ in Thousands	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating	$ 1,062
Finance	107
Total leased assets	1,169
Operating leased liabilities, current	180
Finance leased liabilities, current	104
Operating leased liabilities, noncurrent	958
Finance lease liabilities, noncurrent	6
Total leased liabilities	$ 1,248

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating Lease Expense	$ 56
Finance Lease Cost, Amortization of ROU assets	29
Finance Lease Cost, Interest on lease liabilities	2
Short Term Lease Expense	23
Total Lease Expense	$ 110

Leases - Other Information Rela

Leases - Other Information Related to Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating leases, weighted average remaining lease term	5 years 6 months
Finance leases, weighted average remaining lease term	1 year
Operating leases, weighted average discount rate	5.10%
Finance leases, weighted average discount rate	5.90%
Operating cash flows from operating leases	$ 57
Operating cash flows from finance leases	2
Financing cash flows from finance leases	30
Operating leases, ROU assets obtained in exchange for lease obligations	0
Finance leases, ROU assets obtained in exchange for lease obligations	$ 0

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2019USD ($)
Operating Leases
Remainder of 2019	$ 173
2020	238
2021	238
2022	238
2023	238
Thereafter	178
Total future minimum lease payments	1,303
Less: interest	165
Total	1,138
Finance Leases
Remainder of 2019	93
2020	21
2021	0
2022	0
2023	0
Thereafter	0
Total future minimum lease payments	114
Less: interest	4
Total	$ 110

Net Income Per Common Share (De

Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 9,949	$ 8,211
Basic weighted-average common shares outstanding (in shares)	38,603	37,886
Effect of dilutive stock options (in shares)	58	150
Effect of dilutive restricted stock (in shares)	1,126	1,457
Diluted weighted-average common shares outstanding (in shares)	39,787	39,493
Basic income per common share (in dollars per share)	$ 0.26	$ 0.22
Diluted income per common share (in dollars per share)	$ 0.25	$ 0.21
Antidilutive securities excluded from diluted net income per common share (in shares)	222	86

Other Income (Details)

Other Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Income and Expenses [Abstract]
Foreign currency gains	$ 42	$ 72
Tax indemnification income	802	841
Interest income	283	7
Other	60	0
Total other income	$ 1,187	$ 920

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)segment	Mar. 31, 2018USD ($)
Segment Reporting [Abstract]
Number of operating segments (in segments) | segment	2
Revenues from external customers
Revenues from external customers	$ 86,510	$ 82,630
Operating income
Operating income	16,169	15,137
Interest expense	4,592	4,050
Other income	(1,187)	(920)
Income before income taxes	12,764	12,007
U.S.
Revenues from external customers
Revenues from external customers	75,434	71,488
Operating income
Operating income	14,584	14,156
International
Revenues from external customers
Revenues from external customers	11,076	11,142
Operating income
Operating income	$ 1,585	$ 981