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Acquisitions - Preliminary Determination of Fair Values of Assets and Liabilities (Details) - USD ($) $ in Thousands |  | 12 Months Ended | 18 Months Ended | 24 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 29, 2020 | Sep. 25, 2022 | Sep. 26, 2021 | Sep. 27, 2020 | Sep. 26, 2021 | Sep. 26, 2021 | Mar. 16, 2020
Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  | $ 329,504 | $ 330,204 | $ 328,445 | $ 330,204 | $ 330,204 | $ 79,896
Goodwill, measurement period adjustments |  | 0 | 1,759 |  |  |  |
Total consideration less acquired cash |  | 0 | 0 | $ 130,985 |  |  |
BHMG |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents | $ 22,293 |  | 22,293 |  | 22,293 | 22,293 |
Current assets | 52,559 |  | 51,704 |  | 51,704 | 51,704 |
Measurement period adjustments, current assets |  |  |  |  | (855) |  |
Other assets | 12,167 |  | 16,510 |  | 16,510 | 16,510 |
Measurement period adjustments, other assets |  |  |  |  | 4,343 |  |
Property and equipment | 42,952 |  | 42,985 |  | 42,985 | 42,985 |
Measurement period adjustments, property and equipment |  |  |  |  | 33 |  |
Operating lease assets | 7,445 |  | 7,546 |  | 7,546 | 7,546 |
Measurement period adjustments, lease assets |  |  |  |  | 101 |  |
Goodwill | 63,559 |  | 79,896 |  | 79,896 | 79,896 |
Goodwill, measurement period adjustments |  |  |  |  | 16,337 |  |
Total assets | 314,625 |  | 316,354 |  | 316,354 | 316,354 |
Measurement period adjustments, assets |  |  |  |  | 1,729 |  |
Current liabilities assumed | (73,451) |  | (72,377) |  | (72,377) | (72,377) |
Measurement period adjustments, current liabilities assumed |  |  |  |  | 1,074 |  |
Operating lease liabilities | (6,625) |  | (7,546) |  | (7,546) | (7,546) |
Measurement period adjustments, operating lease liabilities |  |  |  |  | (921) |  |
Other liabilities assumed | (2,246) |  | (4,128) |  | (4,128) | (4,128) |
Measurement period adjustments, other liabilities assumed |  |  |  |  | (1,882) |  |
Pension obligations | (43,503) |  | (43,503) |  | (43,503) | (43,503) |
Postemployment benefit obligations | (36,800) |  | (36,800) |  | (36,800) | (36,800) |
Total liabilities | (162,625) |  | (164,354) |  | (164,354) | (164,354) |
Measurement period adjustments, total liabilities |  |  |  |  | (1,729) |  |
Net assets | 152,000 |  | 152,000 |  | 152,000 | 152,000 |
Less: acquired cash | (22,293) |  |  |  |  | (22,293) |
Total consideration less acquired cash | 129,707 |  |  |  |  | 129,707 |
BHMG | Mastheads |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Measurement period adjustments, intangibles |  |  |  |  | (1,290) |  |
Mastheads | 21,680 | 20,390 | 20,390 |  | 20,390 | 20,390 |
BHMG | Advertiser relationships |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-lived intangibles | 38,780 | 27,620 | 27,620 |  | 27,620 | 27,620 |
Measurement period adjustments, intangibles |  |  |  |  | (11,160) |  |
BHMG | Subscriber relationships |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-lived intangibles | 36,060 | 27,850 | 27,850 |  | 27,850 | 27,850 |
Measurement period adjustments, intangibles |  |  |  |  | (8,210) |  |
BHMG | Commercial print relationships |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-lived intangibles | $ 17,130 | $ 19,560 | $ 19,560 |  | 19,560 | $ 19,560 |
Measurement period adjustments, intangibles |  |  |  |  | $ 2,430 |  |

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