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v3.20.4

Segment Information - Financial information by segment (Details) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2020 USD ($) segment state | Dec. 31, 2019 USD ($)
Financial information for each of the Company's business segments |  |
Number of operating segments | segment | 3 |
Number of states supported in unemployment insurance programs (more than) | state | 15 |
Revenue: |  |
Revenue | $ 945,554 | $ 818,229
Gross profit: |  |
Gross profit | $ 206,055 | $ 175,450
Gross profit (as a percent) | 21.80% | 21.40%
Selling, general & administrative expense: |  |
Selling, general, and administrative expenses | $ 111,967 | $ 87,227
Selling, general, and administrative expense (as a percent) | 11.80% | 10.70%
Operating income: |  |
Operating income | $ 87,572 | $ 79,135
Operating income (as a percent) | 9.30% | 9.70%
Amortization of intangible assets | $ (6,516) | $ (9,088)
Segment Reconciling Items |  |
Selling, general & administrative expense: |  |
Selling, general, and administrative expenses | 2,227 | 537
Operating income: |  |
Amortization of intangible assets | (6,516) | (9,088)
Acquisition-related expenses | (1,873) | 0
Other operating income (loss) | (354) | (537)
U.S. Services |  |
Revenue: |  |
Revenue | 384,934 | 312,281
U.S. Services | Operating Segments |  |
Revenue: |  |
Revenue | 384,934 | 312,281
Gross profit: |  |
Gross profit | $ 99,002 | $ 89,590
Gross profit (as a percent) | 25.70% | 28.70%
Selling, general & administrative expense: |  |
Selling, general, and administrative expenses | $ 37,456 | $ 31,398
Selling, general, and administrative expense (as a percent) | 9.70% | 10.10%
Operating income: |  |
Operating income | $ 61,546 | $ 58,192
Operating income (as a percent) | 16.00% | 18.60%
U.S. Federal Services |  |
Revenue: |  |
Revenue | $ 405,245 | $ 366,571
U.S. Federal Services | Operating Segments |  |
Revenue: |  |
Revenue | 405,245 | 366,571
Gross profit: |  |
Gross profit | $ 82,496 | $ 70,821
Gross profit (as a percent) | 20.40% | 19.30%
Selling, general & administrative expense: |  |
Selling, general, and administrative expenses | $ 52,252 | $ 39,239
Selling, general, and administrative expense (as a percent) | 12.90% | 10.70%
Operating income: |  |
Operating income | $ 30,244 | $ 31,582
Operating income (as a percent) | 7.50% | 8.60%
Outside the U.S. |  |
Revenue: |  |
Revenue | $ 155,375 | $ 139,377
Outside the U.S. | Operating Segments |  |
Revenue: |  |
Revenue | 155,375 | 139,377
Gross profit: |  |
Gross profit | $ 24,557 | $ 15,039
Gross profit (as a percent) | 15.80% | 10.80%
Selling, general & administrative expense: |  |
Selling, general, and administrative expenses | $ 20,032 | $ 16,053
Selling, general, and administrative expense (as a percent) | 12.90% | 11.50%
Operating income: |  |
Operating income | $ 4,525 | $ (1,014)
Operating income (as a percent) | 2.90% | (0.70%)

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