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SEGMENT AND RELATED DISCLOSURES - Segment Information Applicable to Reportable Operating Segments (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) segment
Segment Reporting Information |  |  |
Number of reportable segments | segment | 3 | 3 | 3
Net sales | $ 2,802,118 | $ 2,850,644 | $ 3,124,996
Cost of sales | 2,282,324 | 2,338,908 | 2,598,819
Depreciation and amortization | 12,984 | 12,654 | 11,978
Operating Income (Loss) | 97,062 | 103,153 | 120,552
Interest income, net | 18,725 | 9,961 | 1,083
Other income | 1,700 |  |
Income before taxes | 117,487 | 113,114 | 121,635
Total assets | 1,299,354 | 1,188,381 |
Goodwill | 73,602 | 73,602 |
Enterprise Solutions |  |  |
Segment Reporting Information |  |  |
Net sales | 1,181,148 | 1,201,131 | 1,324,362
Business Solutions |  |  |
Segment Reporting Information |  |  |
Net sales | 1,049,139 | 1,075,599 | 1,245,310
Public Sector Solutions |  |  |
Segment Reporting Information |  |  |
Net sales | 571,831 | 573,914 | 555,324
Operating Segments |  |  |
Segment Reporting Information |  |  |
Net sales | $ 2,802,118 | $ 2,850,644 | $ 3,124,996
Other segment expenses, description | Other segment expenses for each of the reportable segments include service contracts/subscriptions, professional fees, facilities operations, credit card fees, and other miscellaneous expenses. | Other segment expenses for each of the reportable segments include service contracts/subscriptions, professional fees, facilities operations, credit card fees, and other miscellaneous expenses. | Other segment expenses for each of the reportable segments include service contracts/subscriptions, professional fees, facilities operations, credit card fees, and other miscellaneous expenses.
Operating Income (Loss) | $ 113,120 | $ 117,543 | $ 134,057
Total assets | 1,416,039 | 1,286,700 |
Operating Segments | Enterprise Solutions |  |  |
Segment Reporting Information |  |  |
Net sales | 1,181,148 | 1,201,131 | 1,324,361
Cost of sales | 1,001,187 | 1,022,273 | 1,129,297
Personnel costs | 62,378 | 68,112 | 69,882
Marketing | 5,318 | 4,683 | 2,285
Allocated corporate overhead | 72,601 | 59,825 | 61,659
Depreciation and amortization | 852 | 1,452 | 1,992
Other segment expenses | 4,831 | 5,570 | 5,769
Operating Income (Loss) | 33,981 | 39,216 | 53,477
Total assets | 737,405 | 704,577 |
Goodwill | 66,236 | 66,236 |
Operating Segments | Business Solutions |  |  |
Segment Reporting Information |  |  |
Net sales | 1,049,139 | 1,075,599 | 1,245,311
Cost of sales | 796,684 | 828,499 | 994,362
Personnel costs | 70,472 | 73,103 | 69,301
Marketing | 16,127 | 13,755 | 14,385
Allocated corporate overhead | 81,918 | 77,420 | 79,795
Depreciation and amortization | 620 | 628 | 661
Other segment expenses | 6,467 | 6,044 | 7,332
Operating Income (Loss) | 76,851 | 76,150 | 79,475
Total assets | 564,110 | 502,739 |
Goodwill | 7,366 | 7,366 |
Operating Segments | Public Sector Solutions |  |  |
Segment Reporting Information |  |  |
Net sales | 571,831 | 573,914 | 555,324
Cost of sales | 484,453 | 488,136 | 475,159
Personnel costs | 36,661 | 37,031 | 32,030
Marketing | 3,646 | 3,486 | 3,485
Allocated corporate overhead | 40,959 | 38,710 | 39,897
Depreciation and amortization | 91 | 84 | 78
Other segment expenses | 3,733 | 4,290 | 3,570
Operating Income (Loss) | 2,288 | 2,177 | 1,105
Total assets | 114,524 | 79,384 |
Headquarters/Other |  |  |
Segment Reporting Information |  |  |
Unallocated Headquarters/Other expenses | (16,058) | (14,390) | $ (13,505)
Total assets | (116,685) | (98,319) |
Intersegment Elimination |  |  |
Segment Reporting Information |  |  |
Total assets | $ (69,695) | $ (35,522) |

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