Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary Of Activity Recorded Within The Allowance For Doubtful Accounts

The following table summarizes activity recorded within the allowance for doubtful accounts and contract assets balances for the years ended December 31 (in thousands):

	2020		2019		2018
Beginning balance	$	5,951	$	6,170	$	5,599
Adoption of ASU 2016-13, cumulative-effect adjustment to retained earnings at January 1, 2020	385		—		—
Bad debt expense, net of recoveries	1,321		2,577		1,308
Accounts written off against allowance and other adjustments	(4,128)		(2,796)		(737)
Ending balance	$	3,529	$	5,951	$	6,170

Property, Plant and Equipment

The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands):

	2020		2019		2018
Depreciation expense	$	11,252	$	10,666	$	10,249

Components of property, plant, and equipment at December 31 consisted of the following (in thousands):

	2020		2019
Land and land improvements	$	4,605	$	4,583
Building and improvements	41,164		39,901
Machinery and equipment	188,853		174,058
Construction in progress	10,458		5,131
Property, plant, and equipment, gross	245,080		223,673
Less: accumulated depreciation	(155,518)		(145,521)
Property, plant, and equipment, net	$	89,562	$	78,152

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

Recent Accounting Pronouncements Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-13 Financial Instruments - Credit Losses (Topic 326)	The objective of this standard is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit, including trade receivables, held by an entity at each reporting date. The amendments in this update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates.	The standard is effective for the Company as of January 1, 2020. The Company adopted the amendments in this update using the modified retrospective approach through a cumulative-effect adjustment to retained earnings of $291,000, net of $96,000 of income taxes, on the opening consolidated balance sheet as of January 1, 2020. The Company's financial assets that are in the scope of the standard are contract assets and accounts receivables which are short-term in nature. Additionally, the Company has identified and implemented appropriate changes to the Company's business processes, policies and internal controls to support reporting and disclosures. Date of adoption: Q1 2020
ASU 2018-15 Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract	The amendments in this update require an entity to apply the same requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract as the entity would for implementation costs incurred to develop or obtain internal-use software. The accounting for the service element is not affected by the amendments in this update.	The standard is effective for the Company as of January 1, 2020. The Company adopted the amendments in this update using the prospective method of adoption, and the adoption did not have a material impact to the Company's financial statements. Date of adoption: Q1 2020

Recent Accounting Pronouncements Not Yet Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2019-12 Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes	The amendments in this update simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and improve consistent application by clarifying and amending existing guidance. The amendments of this standard are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period for which financial statements have not been issued, with the amendments to be applied on a respective, modified retrospective or prospective basis, depending on the specific amendment.	The Company is currently evaluating the requirements of this standard. The standard is not expected to have a material impact on the Company's financial statements. Planned date of adoption: Q1 2021