XML 29 R17.htm IDEA: XBRL DOCUMENT
v3.20.2

Convertible Senior Notes | 6 Months Ended
--- | ---
Jun. 30, 2020
Convertible Senior Notes. |
Convertible Senior Notes | 9. Convertible Senior Notes ​ 3.75% Convertible Senior Notes ​ On May 18, 2020, the Company issued $200.0 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025, which is referred to herein as the 3.75% Convertible Senior Notes, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended, or the Securities Act. On May 29, 2020, the Company issued an additional $12.5 million in aggregate principal amount of 3.75% Convertible Senior Notes. ​ The 3.75% Convertible Senior Notes bear interest at a rate of 3.75% per year, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2020. The notes will mature on June 1, 2025, unless earlier converted, redeemed or repurchased in accordance with their terms. ​ The 3.75% Convertible Senior Notes are senior, unsecured obligations of the Company and rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the notes, equal in right of payment to any of the Company’s existing and future liabilities that are not so subordinated, including the Company’s $100 million in aggregate principal amount of 5.5% Convertible Senior Notes due 2023, which is referred to herein as the 5.5% Convertible Senior Notes, effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities, including trade payables, of its current or future subsidiaries. ​ Holders of the 3.75% Convertible Senior Notes may convert their notes at their option at any time prior to the close of the business day immediately preceding December 1, 2024 in the following circumstances: ​
| 1) | during any calendar quarter commencing after September 30, 2020, if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for each of at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter;
​
| 2) | during the five business days after any five consecutive trading day period (such five consecutive trading day period, the measurement period) in which the trading price per $1,000 principal amount of the 3.75% Convertible Senior Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day;
​ ​
| 3) | if the Company calls any or all of the 3.75% Convertible Senior Notes for redemption, any such notes that have been called for redemption may be converted at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or
​ ​
| 4) | upon the occurrence of specified corporate events, as described in the indenture governing the 3.75% Convertible Senior Notes.
​ On or after December 1, 2024, the holders of the 3.75% Convertible Senior Notes may convert all or any portion of their notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions. ​ The initial conversion rate for the 3.75% Convertible Senior Notes will be 198.6196 shares of the Company’s common stock per $1,000 principal amount of notes, which is equivalent to an initial conversion price of approximately $5.03 per share of the Company’s common stock, subject to adjustment upon the occurrence of specified events. Upon conversion, the Company will pay or deliver, as applicable, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. ​ In addition, following certain corporate events or following issuance of a notice of redemption, the Company will increase the conversion rate for a holder who elects to convert its notes in connection with such a corporate event or convert its notes called for redemption during the related redemption period in certain circumstances. The 3.75% Convertible Senior Notes will be redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after June 5, 2023 and before the 41st scheduled trading day immediately before the maturity date, at a cash redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least one of the three trading days immediately preceding the date the Company sends the related redemption notice, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company sends such redemption notice. ​ If the Company undergoes a “fundamental change” (as defined in the Indenture), holders may require the Company to repurchase their notes for cash all or any portion of their notes at a fundamental change repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest, to, but excluding, the fundamental change repurchase date. ​ In accounting for the issuance of the 3.75% Convertible Senior Notes, the Company separated the notes into liability and equity components. The initial carrying amount of the liability component of approximately $75.2 million, net of costs incurred, was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component of approximately $130.3 million, net of costs incurred, representing the conversion option, was determined by deducting the fair value of the liability component from the par value of the 3.75% Convertible Senior Notes. The difference between the principal amount of the 3.75% Convertible Senior Notes and the liability component (the debt discount) is amortized to interest expense using the effective interest method over the term of the 3.75% Convertible Senior Notes. The effective interest rate is approximately 29.0%. The equity component of the 3.75% Convertible Senior Notes is included in additional paid-in capital in the unaudited interim condensed consolidated balance sheets and is not remeasured as long as it continues to meet the conditions for equity classification. ​ We incurred transaction costs related to the issuance of the 3.75% Convertible Senior Notes of approximately $7.0 million, consisting of initial purchasers’ discount of approximately $6.4 million and other issuance costs of $0.6 million. In accounting for the transaction costs, we allocated the total amount incurred to the liability and equity components using the same proportions as the proceeds from the 3.75% Convertible Senior Notes. Transaction costs attributable to the liability component were approximately $2.6 million, were recorded as debt issuance cost (presented as contra debt in the unaudited interim condensed consolidated balance sheets) and are being amortized to interest expense over the term of the 3.75% Convertible Senior Notes. The transaction costs attributable to the equity component were approximately $4.4 million and were netted with the equity component in stockholders’ equity. The 3.75% Convertible Senior Notes consisted of the following (in thousands): ​
​ | ​ | ​
​ | June 30,
​ | 2020
Principal amounts: | ​ | ​
Principal | $ | 212,463
Unamortized debt discount (1) | ​ | (133,321)
Unamortized debt issuance costs (1) | ​ | (2,517)
Net carrying amount | $ | 76,625
Carrying amount of the equity component (2) | $ | 130,249
| 1) | Included in the unaudited interim condensed consolidated balance sheets within the 3.75% Convertible Senior Notes, net and amortized over the remaining life of the notes using the effective interest rate method.
​
| 2) | Included in the unaudited interim condensed consolidated balance sheets within additional paid-in capital, net of $4.4 million in equity issuance costs and associated income tax benefit of $12.4 million.
​ Based on the closing price of the Company’s common stock of $8.21 on June 30, 2020, the if-converted value of the notes was greater than the principal amount. The estimated fair value of the note at June 30, 2020 was approximately $339.0 million. The Company utilized a Monte Carlo simulation model to estimate the fair value of the convertible debt. The simulation model is designed to capture the potential settlement features of the convertible debt, in conjunction with simulated changes in the Company’s stock price over the term of the note, incorporating a volatility assumption of 75%. This is considered a Level 3 fair value measurement. ​ Capped Call ​ In conjunction with the pricing of the 3.75% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions ($200 million Notes Capped Call) with certain counterparties at a price of $16.2 million. The 3.75% Notes Capped Call cover, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60% over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised. The net cost incurred in connection with the 3.75% Notes Capped Call has been recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheet 7.5% Convertible Senior Note In September 2019, the Company issued $40.0 million aggregate principal amount of 7.5% Convertible Senior Note due on January 5, 2023, which is referred to herein as the 7.5% Convertible Senior Note, in exchange for net proceeds of $39.1 million, in a private placement to an accredited investor pursuant to Rule 144A under the Securities Act . There are no required principal payments prior to maturity of the 7.5% Convertible Senior Note. Upon maturity of the 7.5% Convertible Senior Note, the Company is required to repay 120% of $40.0 million, or $48.0 million. The 7.5% Convertible Senior Note bears interest at 7.5% per annum, payable quarterly in arrears on January 5, April 5, July 5 and October 5 of each year beginning on October 5, 2019 and will mature on January 5, 2023 unless earlier converted or repurchased in accordance with its terms. The 7.5% Convertible Senior Note is unsecured and does not contain any financial covenants or any restrictions on the payment of dividends, or the issuance or repurchase of common stock by the Company. The 7.5% Convertible Senior Note has an initial conversion rate of 387.5969, which is subject to adjustment in certain events. The initial conversion rate is equivalent to an initial conversion price of approximately $2.58 per share of common stock. The holder of the 7.5% Convertible Senior Note may convert at its option at any time until the close of business on the second scheduled trading day immediately prior to the maturity date for shares of the Company’s common stock, subject to certain limitations. In addition, the 7.5% Convertible Senior Note will be automatically converted if (1) the daily volume-weighted average price per share of common stock exceeds 175% of the conversion price (as described above) on each of the 20 consecutive VWAP trading days (as defined in the note) beginning after the issue date of the 7.5% Convertible Senior Note and (2) certain equity conditions (as defined in the note) are satisfied. Only if both criteria are met is the note automatically converted. Upon either the voluntary or automatic conversion of the 7.5% Convertible Senior Note, the Company will deliver shares of common stock based on (1) the then-effective conversion rate and (2) the original principal amount of $40.0 million and not the maturity principal amount of $48.0 million. The 7.5% Convertible Senior Note does not allow cash settlement (entirely or partially) upon conversion. As such, the Company uses the if-converted method for calculating any potential dilutive effect of the conversion option on diluted earnings per share. The Company concluded the conversion features did not require bifurcation. Specifically, while the Company determined that (i) the conversion features were not clearly and closely related to the host contracts, (ii) the 7.5% Convertible Senior Note (i.e., hybrid instrument) is not remeasured at fair value under otherwise applicable GAAP with changes in fair value reported in earnings as they occur and (iii) the conversion features, if freestanding, would meet the definition of a derivative, the Company concluded such conversion features meet the equity scope exception, and therefore, the conversion features are not required to be bifurcated from the 7.5% Convertible Senior Note. If the Company undergoes a fundamental change prior to the maturity date, subject to certain limitations, the holder may require the Company to repurchase for cash all or a portion of the 7.5% Convertible Senior Note at a cash repurchase price equal to any accrued and unpaid interest on the note (or portion thereof), plus the greater of (1) 115% of the maturity principal amount of $48.0 million (or portion thereof) and (2) 110% of the product of (i) the conversion rate in effect as of the trading day immediately preceding the date of such fundamental change; (ii) the principal amount of the $40.0 million 7.5% Convertible Senior Note to be repurchased divided by $1,000; and (iii) the average of the daily volume-weighted average price per share of the Company’s common stock over the five consecutive VWAP trading days immediately before the effective date of such fundamental change. In addition, with the consent of the holder of the note, subject to certain limitations, the Company may redeem all or any portion of the 7.5% Convertible Senior Note, at the Company’s option, at a cash redemption price equal to any accrued and unpaid interest on the note (or portion thereof), plus the greater of (1) 105% of the maturity principal amount of $48.0 million (or portion thereof); and (2) 115% of the product of (i) the conversion rate in effect as of the trading day immediately preceding the related redemption date; (ii) the principal amount of the 7.5% Convertible Senior Note to be redeemed divided by $1,000; and (iii) the arithmetic average of the daily volume-weighted average price per share of common stock over the five consecutive VWAP trading days immediately before the related redemption date. ​ While the Company concluded the fundamental change redemption option represents an embedded derivative, the Company concluded the value of the embedded derivative to be immaterial given the likelihood of the occurrence of a fundamental change was deemed to be remote. As related to the call option, the Company concluded the call option was clearly and closely related to the host contract, and therefore, did not meet the definition of an embedded derivative. ​ The Company concluded the total debt discount at issuance of the 7.5% Convertible Senior Note equaled approximately $8.0 million. This debt discount was attributed to the fact that upon maturity, the Company is required to repay 120% of $40.0 million, or $48.0 million. In addition, the related debt issuance costs were $1.0 million. The debt discount was recorded as debt issuance cost (presented as contra debt in the unaudited interim condensed consolidated balance sheets) and is being amortized to interest expense over the term of the 7.5% Convertible Senior Note using the effective interest rate method. ​ The 7.5% Convertible Senior Note consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​
​ | June 30, | ​ | December 31,
​ | 2020 | ​ | 2019
Principal amounts: | ​ | ​ | ​ | ​ | ​
Principal at maturity | $ | 48,000 | ​ | $ | 48,000
Unamortized debt discount | ​ | (6,200) | ​ | ​ | (7,400)
Unamortized debt issuance costs | ​ | (812) | ​ | ​ | (969)
Net carrying amount | $ | 40,988 | ​ | $ | 39,631
​ Based on the closing price of the Company’s common stock of $8.21 on June 30, 2020, the if-converted value of the 7.5% Convertible Senior Note was greater than the principal amount. The estimated fair value of the 7.5% Convertible Senior Note at June 30, 2020 and December 31, 2019 was approximately $131.4 million and $53.5 million, respectively. The Company utilized a Monte Carlo simulation model to estimate the fair value of the convertible debt. The simulation model is designed to capture the potential settlement features of the convertible debt, in conjunction with simulated changes in the Company’s stock price over the term of the 7.5% Convertible Senior Note, incorporating a volatility assumption of 75%. This is considered a Level 3 fair value measurement. On July 1, 2020, the 7.5% Convertible Senior Note automatically converted into 16.0 million shares of common stock. 5.5% Convertible Senior Notes ​ In March 2018, the Company issued $100.0 million in aggregate principal amount of 5.5% Convertible Senior Notes due on March 15, 2023, which is referred to herein as the 5.5% Convertible Senior Notes in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act. ​ In May 2020, the Company used a portion of the net proceeds from the issuance of the 3.75% Convertible Senior Notes to finance the cash portion of the partial repurchase of the 5.5% Convertible Senior Notes, which consisted of a repurchase of approximately $66.3 million in aggregate principal amount of the 5.5% Convertible Senior Notes in privately-negotiated transactions for aggregate consideration of $128.9 million, consisting of approximately $90.2 million in cash and approximately 9.4 million shares of the Company’s common stock. Of the $128.9 million in aggregate consideration, $35.5 million and $93.4 million were allocated to the debt and equity components, respectively, utilizing an effective discount rate of 29.8% to determine the fair value of the liability component. As of the repurchase date, the carrying value of the 5.5% Convertible Senior Notes that were repurchased, net of unamortized debt discount and issuance costs, was $48.7 million. The partial repurchase of the 5.5% Convertible Senior Notes resulted in a $13.2 million gain on early debt extinguishment. As of June 30, 2020, approximately $33.7 million aggregate principal amount of the 5.5% Convertible Senior Notes remained outstanding. ​ At issuance in March 2018, the total net proceeds from the 5.5% Convertible Senior Notes were as follows: ​
​ | ​ | ​
​ | Amount
​ | (in thousands)
Principal amount | $ | 100,000
Less initial purchasers’ discount | ​ | (3,250)
Less cost of related capped call and common stock forward | ​ | (43,500)
Less other issuance costs | ​ | (894)
Net proceeds | $ | 52,356
​ The 5.5% Convertible Senior Notes bear interest at 5.5%, payable semi-annually in cash on March 15 and September 15 of each year. The 5.5% Convertible Senior Notes will mature on March 15, 2023, unless earlier converted or repurchased in accordance with their terms. The 5.5% Convertible Senior Notes are unsecured and do not contain any financial covenants or any restrictions on the payment of dividends, or the issuance or repurchase of common stock by the Company. Each $1,000 principal amount of the 5.5% Convertible Senior Notes is convertible into 436.3002 shares of the Company’s common stock, which is equivalent to a conversion price of approximately $2.29 per share, subject to adjustment upon the occurrence of specified events. Holders of these 5.5% Convertible Senior Notes may convert their 5.5% Convertible Senior Notes at their option at any time prior to the close of the last business day immediately preceding September 15, 2022, only under the following circumstances: ​ 1)during any calendar quarter (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; ​ 2)during the five business day period after any five consecutive trading day period (the measurement period) in which the trading price (as defined in the indenture governing the 5.5% Convertible Senior Notes) per $1,000 principal amount of 5.5% Convertible Senior Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate for the 5.5% Convertible Senior Notes on each such trading day; ​ 3)if the Company calls any or all of the 5.5% Convertible Senior Notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or ​ ​ 4)upon the occurrence of certain specified corporate events, such as a beneficial owner acquiring more than 50% of the total voting power of the Company’s common stock, recapitalization of the Company, dissolution or liquidation of the Company, or the Company’s common stock ceases to be listed on an active market exchange. ​ ​ On or after September 15, 2022, holders may convert all or any portion of their 5.5% Convertible Senior Notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions. ​ Upon conversion of the 5.5% Convertible Senior Notes, the Company will pay or deliver, as the case may be, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. While the Company plans to settle the principal amount of the 5.5% Convertible Senior Notes in cash subject to available funding at time of settlement, we currently use the if-converted method for calculating any potential dilutive effect of the conversion option on diluted net income per share, subject to meeting the criteria for using the treasury stock method in future periods. The conversion rate will be subject to adjustment in some events but will not be adjusted for any accrued or unpaid interest. Holders who convert their 5.5% Convertible Senior Notes in connection with certain corporate events that constitute a “make-whole fundamental change” per the indenture governing the 5.5% Convertible Senior Notes or in connection with a redemption will be, under certain circumstances, entitled to an increase in the conversion rate. In addition, if the Company undergoes a fundamental change prior to the maturity date, holders may require the Company to repurchase for cash all or a portion of its 5.5% Convertible Senior Notes at a repurchase price equal to 100% of the principal amount of the repurchased 5.5% Convertible Senior Notes, plus accrued and unpaid interest. The Company may not redeem the 5.5% Convertible Senior Notes prior to March 20, 2021. The Company may redeem for cash all or any portion of the 5.5% Convertible Senior Notes, at the Company’s option, on or after March 20, 2021 if the last reported sale price of the Company’s common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least one of the three trading days immediately preceding the date on which the Company provides notice of redemption, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the 5.5% Convertible Senior Notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. ​ In accounting for the issuance of the notes, the Company separated the 5.5% Convertible Senior Notes into liability and equity components. The initial carrying amount of the liability component of approximately $58.2 million, net of costs incurred, was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component of approximately $37.7 million, net of costs incurred, representing the conversion option, was determined by deducting the fair value of the liability component from the par value of the 5.5% Convertible Senior Notes. The difference between the principal amount of the 5.5% Convertible Senior Notes and the liability component (the debt discount) is amortized to interest expense using the effective interest method over the term of the 5.5% Convertible Senior Notes. The effective interest rate is approximately 16.0%. The equity component of the 5.5% Convertible Senior Notes is included in additional paid-in capital in the unaudited interim condensed consolidated balance sheets and is not remeasured as long as it continues to meet the conditions for equity classification. ​ We incurred transaction costs related to the issuance of the 5.5% Convertible Senior Notes of approximately $4.1 million, consisting of initial purchasers’ discount of approximately $3.3 million and other issuance costs of $0.9 million. In accounting for the transaction costs, we allocated the total amount incurred to the liability and equity components using the same proportions as the proceeds from the 5.5% Convertible Senior Notes. Transaction costs attributable to the liability component were approximately $2.4 million, were recorded as debt issuance cost (presented as contra debt in the unaudited interim condensed consolidated balance sheets) and are being amortized to interest expense over the term of the 5.5% Convertible Senior Notes. The transaction costs attributable to the equity component were approximately $1.7 million and were netted with the equity component in stockholders’ equity. The 5.5% Convertible Senior Notes consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​
​ | June 30, | ​ | December 31,
​ | 2020 | ​ | 2019
Principal amounts: | ​ | ​ | ​ | ​ | ​
Principal | $ | 33,660 | ​ | $ | 100,000
Unamortized debt discount (1) | ​ | (8,126) | ​ | ​ | (27,818)
Unamortized debt issuance costs (1) | ​ | (443) | ​ | ​ | (1,567)
Net carrying amount | $ | 25,091 | ​ | $ | 70,615
Carrying amount of the equity component (2) | $ | — | ​ | $ | 37,702
1)Included in the unaudited interim condensed consolidated balance sheets within the 5.5% Convertible Senior Notes, net and amortized over the remaining life of the 5.5% Convertible Senior Notes using the effective interest rate method. ​ 2)Included in the unaudited interim condensed consolidated balance sheets within additional paid-in capital, net of $1.7 million in equity issuance costs and associated income tax benefit of $9.2 million, at December 31, 2019. ​ Based on the closing price of the Company’s common stock of $8.21 on June 30, 2020, the if-converted value of the 5.5% Convertible Senior Notes was greater than the principal amount. The estimated fair value of the 5.5% Convertible Senior Notes at June 30, 2020 and December 31, 2019 was approximately $120.9 million and $135.3 million, respectively. The Company utilized a Monte Carlo simulation model to estimate the fair value of the convertible debt. The simulation model is designed to capture the potential settlement features of the convertible debt, in conjunction with simulated changes in the Company’s stock price over the term of the 5.5% Convertible Senior Notes, incorporating a volatility assumption of 75%. This is considered a Level 3 fair value measurement. ​ Capped Call ​ In conjunction with the pricing of the 5.5% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (5.5% Notes Capped Call) with certain counterparties at a price of $16.0 million. The 5.5% Notes Capped Call cover, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 5.5% Convertible Senior Notes and is generally expected to reduce the potential dilution to the Company’s common stock upon any conversion of the 5.5% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted 5.5% Convertible Senior Notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 5.5% Notes Capped Call is initially $3.82 per share, which represents a premium of 100% over the last then-reported sale price of the Company’s common stock of $1.91 per share on the date of the transaction and is subject to certain adjustments under the terms of the 5.5% Notes Capped Call. The 5.5% Notes Capped Call becomes exercisable if the conversion option is exercised. ​ The net cost incurred in connection with the 5.5% Notes Capped Call has been recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets. In conjunction with the partial repurchase of the 5.5% Convertible Senior Notes, the Company terminated 100% of the 5.5% Notes Capped Call on June 5, 2020. As a result of the termination, the Company received $24.2 million which is recorded in additional paid-in capital. Common Stock Forward ​ In connection with the issuance of the 5.5% Convertible Senior Notes, the Company also entered into a forward stock purchase transaction, or the Common Stock Forward, pursuant to which the Company agreed to purchase 14,397,906 shares of its common stock for settlement on or about March 15, 2023. In connection with the issuance of the 3.75% Convertible Senior Notes, the Company amended and extended the maturity of the Common Stock Forward to June 1, 2025. The number of shares of common stock that the Company will ultimately repurchase under the Common Stock Forward is subject to customary anti-dilution adjustments. The Common Stock Forward is subject to early settlement or settlement with alternative consideration in the event of certain corporate transactions. ​ The net cost incurred in connection with the Common Stock Forward of $27.5 million has been recorded as an increase in treasury stock in the unaudited interim condensed consolidated balance sheets. The related shares were accounted for as a repurchase of common stock. In conjunction with the partial payoff of the $100 million Senior Convertible Notes, the Common Stock Forward’s expiration date was extended to June 1, 2025. ​ The fair values of the Capped Call and Common Stock Forward are not remeasured.

X
- References No definition available. + Details
Name: | plug_ConvertibleSeniorNotesAbstract
Namespace Prefix: | plug_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for information about Convertible Senior Notes. + References No definition available. + Details
Name: | plug_ConvertibleSeniorNotesTextBlock
Namespace Prefix: | plug_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration