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EMPLOYEE BENEFIT PLANS | 6 Months Ended
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Sep. 30, 2015
Employee Benefits and Share-based Compensation [Abstract] |
EMPLOYEE BENEFIT PLANS | EMPLOYEE BENEFIT PLANS Pension Plans The following table provides a detail of the components of net periodic pension cost (in thousands):
|  |  | Three Months Ended September 30, |  | Six Months Ended September 30, |
|  |  | 2015 |  | 2014 |  | 2015 |  | 2014 |
| Service cost for benefits earned during the period |  | $ | 2,399 |  |  | $ | 2,087 |  |  | $ | 4,772 |  |  | $ | 4,333 |  |
| Interest cost on pension benefit obligation |  | 5,226 |  |  | 6,437 |  |  | 10,396 |  |  | 13,366 |  |
| Expected return on assets |  | (7,014 | ) |  | (7,638 | ) |  | (13,955 | ) |  | (15,861 | ) |
| Amortization of unrecognized losses |  | 2,153 |  |  | 1,641 |  |  | 4,285 |  |  | 3,409 |  |
| Net periodic pension cost |  | $ | 2,764 |  |  | $ | 2,527 |  |  | $ | 5,498 |  |  | $ | 5,247 |  |
We pre-funded our contributions of £12.5 million ($18.6 million) to our U.K. Staff pension plan for fiscal year 2016 in quarterly installments during fiscal year 2015. The current estimates of our cash contributions required for fiscal year 2017 to our U.K. pension plans and Norwegian pension plan to be paid in fiscal year 2016 are $18.1 million and $11.7 million, respectively, of which $5.0 million and $2.0 million, respectively, were paid during the six months ended September 30, 2015. Incentive Compensation Stock–based awards are currently made under the Bristow Group Inc. 2007 Long-Term Incentive Plan (the “2007 Plan”). A maximum of 5,400,000 shares of common stock, par value $.01 per share (“Common Stock”), are reserved. Awards granted under the 2007 Plan may be in the form of stock options, stock appreciation rights, shares of restricted stock, other stock-based awards (payable in cash or Common Stock) or performance awards, or any combination thereof, and may be made to outside directors, employees or consultants. As of September 30, 2015, 1,438,501 shares remained available for grant under the 2007 Plan. We have a number of other incentive and stock option plans which are described in Note 9 to our fiscal year 2015 Financial Statements. Total stock-based compensation expense, which includes stock options and restricted stock, totaled $6.4 million and $4.2 million for the three months ended September 30, 2015 and 2014, respectively, and $10.4 million and $8.4 million for the six months ended September 30, 2015 and 2014, respectively. Stock-based compensation expense has been allocated to our various regions. During the three and six months ended September 30, 2015, we awarded 22,910 and 213,349 shares of restricted stock, respectively, at an average grant date fair value of $45.01 and $56.76 per share, respectively. Also during the three and six months ended September 30, 2015, 26,406 and 740,718 stock options were granted, respectively. The following table shows the assumptions used to compute the stock-based compensation expense for stock options granted during the six months ended September 30, 2015:
| Risk free interest rate | 1.62 | % |
| Expected life (years) | 6 |  |
| Volatility | 28.1 | % |
| Dividend yield | 3.14 | % |
| Weighted average exercise price of options granted | $57.52 per option |  |
| Weighted average grant-date fair value of options granted | $10.71 per option |  |
Performance cash awards vest and pay out in cash three years after the date of grant at varying levels depending on our performance in Total Shareholder Return against a peer group of companies. These awards were designed to tie a significant portion of total compensation to performance. One of the effects of this type of compensation is that it requires liability accounting which can result in volatility in earnings. The liability recorded for these awards as of September 30 and March 31, 2015 was $13.6 million and $21.0 million, respectively, and represents an accrual based on the fair value of the awards on those dates. The decrease in the liability during the six months ended September 30, 2015 resulted from the payout in June 2015 of the awards granted in June 2012 and the reduction in Total Shareholder Return based on declining stock price, partially offset by the value of the new awards granted in June 2015. Any changes in fair value of the awards in future quarters will increase or decrease the liability and impact results in those periods. The effect, either positive or negative, on future period earnings can vary based on factors including changes in our stock price or the stock prices of the peer group companies, as well as changes in other market and company-specific assumptions that are factored into the calculation of fair value of the performance cash awards. Compensation related to the performance cash awards was recorded as a benefit of $1.6 million and an expense of $2.5 million during the three months ended September 30, 2015 and 2014, respectively, and an expense of $1.7 million and $4.6 million, during the six months ended September 30, 2015 and 2014, respectively.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References No definition available. + Details
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