Employee benefit plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | |
Jul. 04, 2015 | Jun. 28, 2014 | Jul. 04, 2015 | Jun. 28, 2014 | Sep. 30, 2014 |
Components of net pension cost [Abstract] | | | | | | |
Interest cost | | $ 308 | $ 330 | $ 928 | $ 973 | |
Expected return on plan assets | | (311) | (331) | (937) | (978) | |
Amortization of net loss | | 66 | 57 | 198 | 170 | |
Net periodic benefit cost | | 63 | 56 | 189 | 165 | |
Net cost of defined contribution plans | | 87 | 125 | 359 | 372 | |
Net cost of all employee benefit plans | | 150 | 181 | 548 | 537 | |
Movement in liability for pension benefits [Roll forward] | | | | | | |
Liability for pension benefits at beginning of period | | | | 9,529 | 8,354 | |
Interest cost | | 308 | 330 | 928 | 973 | |
Expected return on plan assets | | (311) | (331) | (937) | (978) | |
Plan contributions | | | | (497) | (429) | |
Effect of exchange rate changes | | | | (349) | 400 | |
Balance at end of period | | 8,674 | 8,320 | 8,674 | 8,320 | |
Amounts recognized in balance sheet [Abstract] | | | | | | |
Non-current liabilities | | 8,674 | | 8,674 | | $ 9,529 |
Amounts recognized in accumulated other comprehensive loss [Abstract] | | | | | | |
Actuarial loss, net of $16 and $47 tax benefit for the three and nine month periods, respectively, (2014: net of $13 and $39 tax benefit for the three and nine month periods, respectively) | | 50 | 44 | 151 | 131 | |
Actuarial loss | | 16 | $ 13 | 47 | $ 39 | |
Estimated future benefit payments [Abstract] | | | | | | |
2,015 | | 668 | | 668 | | |
2,016 | | 707 | | 707 | | |
2,017 | | 697 | | 697 | | |
2,018 | | 695 | | 695 | | |
2,019 | | 671 | | 671 | | |
2020 - 2024 | | 3,658 | | 3,658 | | |
Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | 3,397 | | 3,397 | | 21,117 |
Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | 17,285 | | 17,285 | | 0 |
Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | 0 | | 0 | | 0 |
Adept Strategy 9 Fund [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | 0 | | 0 | | |
Adept Strategy 9 Fund [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | 13,848 | | 13,848 | | |
Adept Strategy 9 Fund [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | 0 | | 0 | | |
Schroder Matching Plus Nominal and Index Linked Liability Driven Investment Swap Funds [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | 0 | | 0 | | |
Schroder Matching Plus Nominal and Index Linked Liability Driven Investment Swap Funds [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | 3,437 | | 3,437 | | |
Schroder Matching Plus Nominal and Index Linked Liability Driven Investment Swap Funds [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | 0 | | 0 | | |
U.S. Equity Funds [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | 376 | | 376 | | 2,431 |
U.S. Equity Funds [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | 0 | | 0 | | 0 |
U.S. Equity Funds [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | 0 | | 0 | | 0 |
U.S. Mutual Funds and Fixed Income Funds [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | 2,672 | | 2,672 | | |
U.S. Mutual Funds and Fixed Income Funds [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | 0 | | 0 | | |
U.S. Mutual Funds and Fixed Income Funds [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | 0 | | 0 | | |
Cash [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | 349 | | 349 | | 333 |
Cash [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | 0 | | 0 | | 0 |
Cash [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | $ 0 | | 0 | | 0 |
Standard Life Pension Global Absolute Returns Strategies Fund [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | | | | | 7,187 |
Standard Life Pension Global Absolute Returns Strategies Fund [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | | | | | 0 |
Standard Life Pension Global Absolute Returns Strategies Fund [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | | | | | 0 |
Standard Life U.K. Indexed Linked Fund [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | | | | | 1,856 |
Standard Life U.K. Indexed Linked Fund [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | | | | | 0 |
Standard Life U.K. Indexed Linked Fund [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | | | | | 0 |
Standard Life Long Corporate Bond Fund [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | | | | | 1,785 |
Standard Life Long Corporate Bond Fund [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | | | | | 0 |
Standard Life Long Corporate Bond Fund [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | | | | | 0 |
CF Ruffer Absolute Return Fund [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | | | | | 7,177 |
CF Ruffer Absolute Return Fund [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | | | | | 0 |
CF Ruffer Absolute Return Fund [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | | | | | 0 |
U.S. Mutual Funds [Member] | Level 1 (Quoted prices in active markets) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [1] | | | | | 348 |
U.S. Mutual Funds [Member] | Level 2 (Significant observable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [2] | | | | | 0 |
U.S. Mutual Funds [Member] | Level 3 (Unobservable inputs) [Member] | | | | | | |
Fair Value of Plan Assets [Abstract] | | | | | | |
Fair value of plan assets | [3] | | | | | $ 0 |
U.S. Defined Benefit Plan [Member] | | | | | | |
Estimated future employer contributions [Abstract] | | | | | | |
Employer contributions | | | | 150 | | |
Estimated future employer contributions in current fiscal year | | | | 50 | | |
U.K. Defined Benefit Plan [Member] | | | | | | |
Estimated future employer contributions [Abstract] | | | | | | |
Employer contributions | | | | 347 | | |
Estimated future employer contributions in current fiscal year | | | | $ 464 | | |
U.K. Defined Benefit Plan [Member] | Adept Strategy 9 Fund [Member] | | | | | | |
Estimated future employer contributions [Abstract] | | | | | | |
Defined benefit plan, actual plan asset allocations (in hundredths) | | 80.00% | | 80.00% | | |
U.K. Defined Benefit Plan [Member] | Schroder Matching Plus Nominal and Index Linked Liability Driven Investment Swap Funds [Member] | | | | | | |
Estimated future employer contributions [Abstract] | | | | | | |
Defined benefit plan, actual plan asset allocations (in hundredths) | | 20.00% | | 20.00% | | |
| |
[1] | Level 1 inputs are quoted, unadjusted prices in active markets for identical assets or liabilities at the measurement date. The Company's pension plan financial assets in U.S. Equity Funds, Mutual Funds and Fixed Income Funds are Level 1 assets. | |
[2] | Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. The Company's pension plan financial assets held in the Adept Strategy 9 Fund and the Schroder investments are Level 2 assets. The Company uses the Net Asset Value to determine the fair value of underlying investments which a do not have readily determinable fair value; and b prepare their financial statements consistent with the measurement principles of an investment company. The Funds are not exchange traded. The Funds are not subject to any redemption notice periods or restrictions and can be redeemed on a daily basis. No gates or holdbacks or dealing suspensions are being applied to the Funds. The Funds are of perpetual duration. | |
[3] | Level 3 inputs are unobservable inputs for an asset or liability. The Company currently does not have any Level 3 pension plan financial assets. | |