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Revenues (Tables) | 12 Months Ended
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Sep. 30, 2019
Revenues |
Schedule of disaggregation of revenue by reportable segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Year Ended September 30, 2019 | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ | Technical | ​ |
(In thousands) |  | Filtration |  | USG |  | Test |  | Packaging |  | Total
Customer type: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Commercial | ​ | $ | 180,356 | ​ | $ | 207,666 | ​ | $ | 168,201 | ​ | $ | 86,599 | ​ | $ | 642,822
Government | ​ |  | 145,379 | ​ |  | 4,249 | ​ |  | 20,193 | ​ |  | 327 | ​ |  | 170,148
Total revenues | ​ | $ | 325,735 | ​ | $ | 211,915 | ​ | $ | 188,394 | ​ | $ | 86,926 | ​ | $ | 812,970
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Geographic location: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
United States | ​ | $ | 274,446 | ​ | $ | 150,381 | ​ | $ | 112,358 | ​ | $ | 45,787 | ​ | $ | 582,972
International | ​ |  | 51,289 | ​ |  | 61,534 | ​ |  | 76,036 | ​ |  | 41,139 | ​ |  | 229,998
Total revenues | ​ | $ | 325,735 | ​ | $ | 211,915 | ​ | $ | 188,394 | ​ | $ | 86,926 | ​ | $ | 812,970
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Revenue recognition method: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Point in time | ​ | $ | 164,224 | ​ | $ | 164,126 | ​ | $ | 36,787 | ​ | $ | — | ​ | $ | 365,137
Over time | ​ |  | 161,511 | ​ |  | 47,789 | ​ |  | 151,607 | ​ |  | 86,926 | ​ |  | 447,833
Total revenues | ​ | $ | 325,735 | ​ | $ | 211,915 | ​ | $ | 188,394 | ​ | $ | 86,926 | ​ | $ | 812,970
Schedule of reconciliation of ASC 606 to prior accounting standards | The amount by which each financial statement line item is affected in 2019 as a result of applying the new accounting standard as discussed in Note 2 is presented below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2019
​ | ​ | ​ | ​ | ​ | Effect of the | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | adoption of | ​ | Under Prior
(In thousands) |  | As Reported |  | ASC 606 |  | Accounting
Consolidated Balance Sheets |  | ​ |  |  | ​ |  |  | ​ |
Contract assets (1) | ​ | $ | 115,310 | ​ | $ | (39,055) | ​ | $ | 76,255
Inventories | ​ |  | 128,825 | ​ |  | 34,065 | ​ |  | 162,890
Total current assets | ​ |  | 495,194 | ​ |  | (4,990) | ​ |  | 490,204
Total assets | ​ |  | 1,466,720 | ​ |  | (4,990) | ​ |  | 1,461,730
Contract liabilities (2) | ​ |  | 81,177 | ​ |  | 2,870 | ​ |  | 84,047
Total current liabilities | ​ |  | 251,635 | ​ |  | 2,870 | ​ |  | 254,505
Deferred tax liabilities | ​ |  | 64,855 | ​ |  | (658) | ​ |  | 64,197
Total liabilities | ​ |  | 640,498 | ​ |  | 2,212 | ​ |  | 642,710
Retained earnings | ​ |  | 684,741 | ​ |  | (7,202) | ​ |  | 677,539
Total shareholders’ equity | ​ |  | 826,222 | ​ |  | (7,202) | ​ |  | 819,020
Total liabilities and shareholders’ equity | ​ | $ | 1,466,720 | ​ |  | (4,990) | ​ |  | 1,461,730
| (1) | Previously “cost and estimated earnings on long-term contracts”
| (2) | Previously “advance payments on long-term contracts” and “current portion of deferred revenue”
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended
​ | ​ | September 30, 2019
​ | ​ | ​ | ​ | ​ | Effect of the | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | adoption of | ​ | Under Prior
(In thousands, except per share amounts) |  | As Reported |  | ASC 606 |  | Accounting
Consolidated Statements of Operations |  | ​ |  |  | ​ |  |  | ​ |
Net sales | ​ | $ | 812,970 | ​ | $ | (5,598) | ​ | $ | 807,372
Cost of sales | ​ |  | 508,521 | ​ |  | (6,658) | ​ |  | 501,863
Total costs and expenses | ​ |  | 710,754 | ​ |  | (6,658) | ​ |  | 704,096
Earnings before income tax | ​ |  | 102,216 | ​ |  | 1,060 | ​ |  | 103,276
Income tax expense | ​ |  | 21,177 | ​ |  | 255 | ​ |  | 21,432
Net earnings | ​ |  | 81,039 | ​ |  | 805 | ​ |  | 81,844
Earnings per share: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Basic: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Net earnings | ​ | $ | 3.12 | ​ | $ | 0.03 | ​ | $ | 3.15
Diluted: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Net earnings | ​ | $ | 3.10 | ​ | $ | 0.03 | ​ | $ | 3.13
Consolidated Statements of Comprehensive Income | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net earnings | ​ | $ | 81,039 | ​ | $ | 805 | ​ | $ | 81,844
Comprehensive income | ​ | ​ | 68,593 | ​ | ​ | 805 | ​ | ​ | 69,398
Consolidated Statements of Cash flows | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net earnings | ​ | $ | 81,039 | ​ | $ | 805 | ​ | $ | 81,844
Adjustments to reconcile net earnings to net cash provided by operating activities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Change in assets and liabilities | ​ | $ | (9,944) | ​ | ​ | (805) | ​ | $ | (10,749)
Net cash provided by operating activities | ​ | ​ | 105,137 | ​ | ​ | — | ​ | ​ | 105,137

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