The changes in accumulated other comprehensive income (loss) by component, net of tax, for the three and six months ended June 30, 2020 and 2019 are as follows:

Three months ended June 30, 2020

Three months ended June 30, 2019

Balance

Gains/(losses)

Remaining

Balance

Gains/(losses)

Remaining

recognized

balance

recognized

balance

(In thousands)

3/31/20

in OCI

6/30/20

3/31/2019

in OCI

6/30/19

Pension benefits

133

448

581

2,194

—

2,194

For the six months ended June 30, 2020

For the six months ended June 30, 2019

Balance

Gains/(losses)

Remaining

Balance

Gains/(losses)

Remaining

recognized

balance

recognized

balance

(In thousands)

12/31/19

in OCI

6/30/20

12/31/18

in OCI

6/30/19

Pension benefits

(236

)

817

581

2,194

—

2,194

We had 2,402,241 and 3,997,084 incremental "in-the-money" warrants and restricted stock units at June 30, 2020 and 2019, respectively, which are as follows:

Total shares outstanding including warrants and restricted stock units	June 30, 2020		June 30, 2019
Common shares outstanding		40,335,963		37,845,158
New creditor warrants (strike price $0.001 per common share)		817,742		2,034,235
GulfMark creditor warrants (strike price $0.01 per common share)		952,154		1,683,147
Restricted stock units		632,345		279,702
Total		42,738,204		41,842,242

We also had 5,923,399 shares of “out-of-the-money” warrants outstanding at June 30, 2020 and 2019, respectively. Included in these “out-of-the-money” warrants are Series A Warrants, Series B Warrants and GLF Equity Warrants which have exercise prices of $57.06, $62.28, and $100.00, respectively.

On April 13, 2020, we adopted a Tax Benefits Preservation Plan (the “Plan”) as a measure to protect our existing net operating loss carryforwards and foreign tax credits (“Tax Attributes”) and to reduce our potential future tax liabilities. Use of our Tax Attributes will be substantially limited if we experience an “ownership change” as defined in Section 382 of the Internal Revenue Code (“Section 382”).

While the Plan is in effect, any person or group that acquires beneficial ownership of 4.99% or more of our common stock then outstanding without approval from our Board of Directors (the Board) or without meeting certain customary exceptions would be subject to significant dilution in their ownership interest in our company. Stockholders who currently own 4.99% or more of our outstanding common stock will not trigger the Plan unless they acquire 0.5% or more additional shares of common stock.

Pursuant to the Plan, one right will be distributed to our stockholders for each share of our common stock owned of record at the close of business on April 24, 2020. Each right would initially represent the right to purchase from the Company one one-thousandth of a share of our Series A Junior Participating Preferred Stock, no par value (the “Preferred Stock”) at a purchase price of $38.00 per one one-thousandth of a share. The preferred stock will entitle the holder to exercise voting rights, receive dividends, participate in distributions and to have the benefit of all other rights of holders of preferred stock. The Board may redeem the rights in whole, but not in part, for $0.001 per right (subject to adjustment) at any time prior to the close of business on the tenth business day after the first date of public announcement that any person or group has triggered the Plan.

The rights will expire on the earliest of (i) the close of business on April 13, 2023, (ii) the time at which the rights are redeemed or exchanged, or (iii) the time at which the Board determines that the Tax Attributes are fully utilized, expired, no longer necessary or become limited under Section 382.