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Details of Selected Balance Sheet Accounts (Tables) | 3 Months Ended
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Mar. 31, 2022
Details of Selected Balance Sheet Accounts [Abstract] |
Schedule of Accounts Receivable, Net | Additional information regarding selected balance sheet accounts as of March 31, 2022 and December 31, 2021 is presented below (in thousands):
| March 31, 2022 |  | December 31, 2021
Accounts receivable, net: |  |  |
Trade | $ | 124,692 |  |  | $ | 116,434 |
Unbilled revenue | 24,368 |  |  | 24,389 |
Contract assets | 39,937 |  |  | 39,755 |
Other | 10,039 |  |  | 9,973 |
Total accounts receivable | 199,036 |  |  | 190,551 |
Allowance for doubtful accounts | (4,779) |  |  | (4,471) |
| $ | 194,257 |  |  | $ | 186,080 |
Allowance for doubtful accounts as a percentage of total accounts receivable | 2 | % |  | 2 | %
Schedule of Contract with Customer, Asset and Liability |
| March 31, 2022 |  | December 31, 2021
Deferred revenue (contract liabilities) | $ | 47,560 |  |  | $43,236
Summary of Activity in Allowance for Doubtful Accounts | The following provides a summary of activity in the allowance for doubtful accounts for the three months ended March 31, 2022 and 2021 (in thousands):
| Three Months Ended March 31,
| 2022 |  | 2021
Allowance for doubtful accounts – January 1 | $ | 4,471 |  |  | $ | 8,304 |
Provisions | 943 |  |  | 214 |
Write-offs | (635) |  |  | (116) |
Other | — |  |  | 143 |
Allowance for doubtful accounts – March 31 | $ | 4,779 |  |  | $ | 8,545 |
Schedule of Inventory, Net |
| March 31, 2022 |  | December 31, 2021
Inventories, net: |  |  |
Finished goods and purchased products | $ | 91,215 |  |  | $ | 87,934 |
Work in process | 30,706 |  |  | 24,722 |
Raw materials | 98,285 |  |  | 96,357 |
Total inventories | 220,206 |  |  | 209,013 |
Allowance for excess or obsolete inventory | (39,320) |  |  | (40,440) |
| $ | 180,886 |  |  | $ | 168,573 |
Schedule of Property, Plant and Equipment, Net |
|  |  | March 31, 2022 |  | December 31, 2021
Property, plant and equipment, net: |  |  |  |  |  |  |  |  |
Property, plant and equipment |  | $ | 1,140,743 |  |  | $ | 1,151,533 |
Accumulated depreciation |  | (810,625) |  |  | (812,950) |
|  |  |  |  |  |  | $ | 330,118 |  |  | $ | 338,583 |
Schedule of Finite-Lived Intangible Assets |
| March 31, 2022 |  | December 31, 2021
Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Other intangible assets: |  |  |  |  |  |  |  |  |  |  |
Customer relationships | $ | 168,276 |  |  | $ | 69,509 |  |  | $ | 98,767 |  |  | $ | 168,284 |  |  | $ | 66,734 |  |  | $ | 101,550 |
Patents/Technology/Know-how | 78,815 |  |  | 34,679 |  |  | 44,136 |  |  | 78,821 |  |  | 33,151 |  |  | 45,670 |
Tradenames and other | 53,682 |  |  | 15,946 |  |  | 37,736 |  |  | 53,708 |  |  | 15,179 |  |  | 38,529 |
| $ | 301,299 |  |  | $ | 120,660 |  |  | $ | 180,639 |  |  | $ | 300,813 |  |  | $ | 115,064 |  |  | $ | 185,749 |
Schedule of Other Noncurrent Assets |
| March 31, 2022 |  | December 31, 2021
Other noncurrent assets: |  |  |
Deferred compensation plan | $ | 21,607 |  |  | $ | 23,348 |
Deferred financing costs | 2,525 |  |  | 2,674 |
Deferred income taxes | 1,341 |  |  | 1,878 |
Other | 4,815 |  |  | 4,989 |
| $ | 30,288 |  |  | $ | 32,889 |
Schedule of Accrued Liabilities |
| March 31, 2022 |  | December 31, 2021
Accrued liabilities: |  |  |
Accrued compensation | $ | 16,586 |  |  | $ | 20,904 |
Accrued taxes, other than income taxes | 6,758 |  |  | 5,130 |
Insurance liabilities | 5,231 |  |  | 6,361 |
Accrued interest | 5,337 |  |  | 3,629 |
Accrued commissions | 2,502 |  |  | 2,194 |
Other | 5,127 |  |  | 5,183 |
| $ | 41,541 |  |  | $ | 43,401 |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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