Northwest Pipe (NWPX) 10-Q 8 May 20 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 29, 2020
Document Information [Line Items]
Entity Registrant Name	Northwest Pipe Co.
Entity Central Index Key	0001001385
Trading Symbol	nwpx
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		9,787,995
Entity Shell Company	false
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Title of 12(b) Security	Common Stock, par value $0.01 per share

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 68,923	$ 62,643
Cost of sales	59,344	56,072
Gross profit	9,579	6,571
Selling, general, and administrative expense	7,945	4,247
Operating income	1,634	2,324
Other income (expense)	(401)	159
Interest income	22	4
Interest expense	(219)	(131)
Income before income taxes	1,036	2,356
Income tax expense	472	191
Net income	$ 564	$ 2,165
us-gaap_EarningsPerShareAbstract
Basic (in dollars per share)	$ 0.06	$ 0.22
Diluted (in dollars per share)	$ 0.06	$ 0.22
Shares used in per share calculations:
Basic (in shares)	9,751	9,735
Diluted (in shares)	9,829	9,735

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income	$ 564	$ 2,165
Other comprehensive income (loss), net of tax:
Pension liability adjustment	25	26
Unrealized gain (loss) on cash flow hedges	79	(15)
Other comprehensive income, net of tax	104	11
Comprehensive income	$ 668	$ 2,176

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 9,656	$ 31,014
Trade and other receivables, less allowance for doubtful accounts of $778 and $801	38,789	38,026
Contract assets	79,350	91,186
Inventories	39,259	30,654
Prepaid expenses and other	4,375	4,159
Total current assets	171,429	195,039
Property and equipment, less accumulated depreciation and amortization of $88,786 and $86,244	108,315	99,631
Operating lease right-of-use assets	28,678	7,683
Goodwill	22,985
Intangible assets, net	11,997	1,231
Other assets	5,909	6,661
Total assets	349,313	310,245
Current liabilities:
Current portion of long-term debt	2,911
Accounts payable	17,933	15,493
Accrued liabilities	10,670	12,150
Contract liabilities	7,882	12,281
Current portion of operating lease liabilities	2,450	1,642
Total current liabilities	41,846	41,566
Long-term debt, less current portion	12,968
Operating lease liabilities, less current portion	25,264	6,247
Deferred income taxes	10,293	4,265
Other long-term liabilities	9,757	10,009
Total liabilities	100,128	62,087
Commitments and contingencies (Note 10)
Stockholders’ equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding
Common stock, $.01 par value, 15,000,000 shares authorized, 9,787,995 and 9,746,979 shares issued and outstanding	98	97
Additional paid-in-capital	120,902	120,544
Retained earnings	129,895	129,331
Accumulated other comprehensive loss	(1,710)	(1,814)
Total stockholders’ equity	249,185	248,158
Total liabilities and stockholders’ equity	$ 349,313	$ 310,245

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 778,000	$ 801,000
Accumulated depreciation and amortization	$ 88,786	$ 86,244
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	9,787,995	9,746,979
Common stock, shares outstanding (in shares)	9,787,995	9,746,979

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member]Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2018						9,735,055
Balances (Accounting Standards Update 2018-02 [Member]) at Dec. 31, 2018			$ 235	$ (235)
Balances at Dec. 31, 2018						$ 97	$ 118,835	$ 101,194	$ (1,536)	$ 218,590
Net income								2,165		2,165
Pension liability adjustment									26	26
Unrealized gain (loss) on cash flow hedges, net of tax expense/benefit									(15)	(15)
Share-based compensation expense							22			22
Balances (in shares) at Mar. 31, 2019						9,735,055
Balances at Mar. 31, 2019						$ 97	118,857	103,594	(1,760)	220,788
Balances (in shares) at Dec. 31, 2019						9,746,979
Balances at Dec. 31, 2019						$ 97	120,544	129,331	(1,814)	248,158
Net income								564		564
Pension liability adjustment									25	25
Unrealized gain (loss) on cash flow hedges, net of tax expense/benefit									79	79
Issuance of common stock under stock compensation plans (in shares)						41,016
Issuance of common stock under stock compensation plans						$ 1	(102)			(101)
Share-based compensation expense							460			460
Balances (in shares) at Mar. 31, 2020						9,787,995
Balances at Mar. 31, 2020						$ 98	$ 120,902	$ 129,895	$ (1,710)	$ 249,185

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Pension liability adjustment, tax expense/benefit	$ 0	$ 0
Unrealized gain (loss) on cash flow hedges, tax expense/benefit	$ 23	$ 8

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 564	$ 2,165
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and finance lease amortization	3,031	2,669
Amortization of intangible assets	399	108
Deferred income taxes	712	(10)
Share-based compensation expense	460	22
Other, net	(232)	30
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities:
Trade and other receivables	5,213	5,856
Contract assets, net	8,683	5,616
Inventories	(3,068)	(1,740)
Prepaid expenses and other assets	2,179	300
Accounts payable	1,320	(4,264)
Accrued and other liabilities	(4,225)	(395)
Net cash provided by operating activities	15,036	10,357
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(48,728)
Purchases of property and equipment	(2,936)	(1,622)
Proceeds from sale of property and equipment		2
Net cash used in investing activities	(51,664)	(1,620)
Cash flows from financing activities:
Borrowings on line of credit	41,377	12,003
Repayments on line of credit	(41,377)	(23,467)
Borrowings on long-term debt	15,879
Payments on finance lease obligations	(103)	(107)
Payments of debt issuance costs	(405)
Tax withholdings related to net share settlements of restricted stock and performance share awards	(101)
Net cash provided by (used in) financing activities	15,270	(11,571)
Change in cash and cash equivalents	(21,358)	(2,834)
Cash and cash equivalents, beginning of period	31,014	6,677
Cash and cash equivalents, end of period	9,656	3,843
Noncash investing and financing activities:
Accrued property and equipment purchases	445	339
Right-of-use assets obtained in exchange for operating lease liabilities		$ 506

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Basis of Presentation The Condensed Consolidated Financial Statements are expressed in United States Dollars and include the accounts of Northwest Pipe Company (the “Company”) and its subsidiaries over which the Company exercises control as of the financial statement date. Intercompany accounts and transactions have been eliminated. The Company produces high-quality engineered steel water pipe, precast and reinforced concrete products, Permalok® steel casing pipe, bar-wrapped concrete cylinder pipe, as well as custom linings, coatings, joints, and one one The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The financial information as of December 31, 2019 10 December 31, 2019 “2019 10 2019 10 Certain amounts from the prior year financial statements have been reclassified in order to conform to the current year presentation. Operating results for the three March 31, 2020 not may December 31, 2020, 2019 "COVID‑19" The Company recorded revenue of $1.2 three twelve December 31, 2018, three March 31, 2019. not December 31, 2019.

Note 2 - Business Combination

Note 2 - Business Combination	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Business Combination Disclosure [Text Block]	2. Business Combination On January 31, 2020, 100% $49.4 three one The following table summarizes the preliminary purchase consideration and preliminary fair value of the assets acquired and liabilities assumed as of January 31, 2020 Assets Cash and cash equivalents $ 691 Trade and other receivables 7,225 Inventories 5,537 Prepaid expenses and other 356 Property and equipment 9,096 Operating lease right-of-use assets 21,684 Intangible assets 11,165 Total assets acquired 55,754 Liabilities Accounts payable 1,395 Accrued liabilities 1,189 Operating lease liabilities 20,454 Deferred income taxes 5,343 Other long-term liabilities 939 Total liabilities assumed 29,320 Goodwill 22,985 Total purchase consideration $ 49,419 The purchase consideration for this business combination was allocated to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values on the acquisition date, with the remaining unallocated purchase consideration recorded as goodwill. The asset and liability fair value measurements primarily related to inventories, property and equipment, operating lease right-of-use assets and liabilities, identifiable intangible assets, goodwill, and deferred income taxes, are preliminary and subject to change as additional information is obtained. The purchase price allocation will be finalized as soon as practicable within the measurement period, but not one The following table summarizes the components of the intangible assets acquired and their estimated useful lives: Estimated Useful Life Fair Value (In years) (In thousands) Customer relationships 11.0 $ 8,031 Trade names 10.0 2,093 Backlog 0.9 1,041 Total intangible assets 9.9 $ 11,165 Goodwill arose from the acquisition of an assembled workforce, expansion of product offerings, and management’s industry know-how. The Company does not The Company incurred transaction costs associated with this acquisition of $2.5 three March 31, 2020. Geneva operations contributed net sales of $8.0 January 31, 2020 March 31, 2020. The following unaudited pro forma summary presents the consolidated results of the Company as if the acquisition of Geneva had occurred on January 1 Three Months Ended March 31, 2020 2019 Net sales $ 72,512 $ 72,420 Net income 2,424 1,966 This unaudited pro forma consolidated financial data is included only for the purpose of illustration and does not January 1 not January 1 January 1

Note 3 - Inventories

Note 3 - Inventories	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	3 . Inventories Inventories consist of the following (in thousands): March 31, 2020 December 31, 2019 Raw materials $ 30,273 $ 26,772 Work-in-process 2,261 1,579 Finished goods 5,097 683 Supplies 1,628 1,620 Total inventories $ 39,259 $ 30,654

Note 4 - Goodwill and Intangibl

Note 4 - Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	4. Goodwill and Intangible Assets Goodwill Goodwill represents the excess of purchase price over the assigned fair values of the assets and liabilities assumed in conjunction with an acquisition. The changes in the carrying amount of goodwill for the three March 31, 2020 Goodwill, December 31, 2019 $ - Acquisition of Geneva (Note 2) 22,985 Goodwill, March 31, 2020 $ 22,985 Goodwill is reviewed for impairment annually at December 31. not 50% not not not In addition to the annual impairment test, the Company is required to regularly assess whether a triggering event has occurred which would require interim impairment testing. The Company considered the current and expected future economic and market conditions surrounding the COVID‑19 not Intangible Assets Intangible assets consist of the following (in thousands): Gross Carrying Accumulated Intangible Amount Amortization Assets, Net As of March 31, 2020 Customer relationships $ 9,409 $ (983 ) $ 8,426 Trade names and trademarks 3,225 (506 ) 2,719 Backlog 1,041 (189 ) 852 Total $ 13,675 $ (1,678 ) $ 11,997 As of December 31, 2019 Customer relationships $ 1,378 $ (827 ) $ 551 Trade names and trademarks 1,132 (452 ) 680 Total $ 2,510 $ (1,279 ) $ 1,231 As of March 31, 2020, 2, Intangible assets are amortized using the straight-line method over estimated useful lives ranging from eleven fifteen five Year ending December 31, Remainder of 2020 $ 1,716 2021 1,153 2022 1,153 2023 1,153 2024 1,015 Thereafter 5,807 Total amortization expense $ 11,997

Note 5 - Line of Credit and Lon

Note 5 - Line of Credit and Long-term Debt	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Debt Disclosure [Text Block]	5. Line of Credit and Long-Term Debt The Company’s Credit Agreement with Wells Fargo Bank, N.A. (“Wells Fargo”) dated October 25, 2018 January 31, 2020 No. 1 $74 October 25, 2024. The Amended Credit Agreement contains customary representations and warranties, as well as customary affirmative and negative covenants, events of default, and indemnification provisions in favor of the lender. The negative covenants include restrictions regarding the incurrence of liens and indebtedness and certain acquisitions and dispositions of assets and other matters, all subject to certain exceptions. The Amended Credit Agreement also requires the Company to regularly provide financial information to Wells Fargo and to maintain a Senior Leverage Ratio (as defined in the Amended Credit Agreement) not 3.00 1.10 1.00. March 31, 2020. The Company's obligations under the Amended Credit Agreement are secured by a security interest in certain real property owned by the Company and its subsidiaries and substantially all of Company’s and its subsidiaries’ other assets. Line of Credit As of March 31, 2020, no $60.4 December 31, 2019, no three 1.5% 2.0%. March 31, 2020 December 31, 2019, 3.04% 3.43% 0.25% 0.375%, Long-Term Debt Pursuant to the Amended Credit Agreement, on March 31, 2020, $15.9 October 25, 2024 three 2.0% 2.5%. $0.3 March 31, 2020, $15.9 60% 20% may ten Future principal payments of long-term debt are as follows (in thousands): Year ending December 31, Remainder of 2020 $ 2,117 2021 3,176 2022 3,176 2023 3,176 2024 4,234 Thereafter - Total future principal payments $ 15,879

Note 6 - Leases

Note 6 - Leases	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Lessee, Lease, Disclosure [Text Block]	6 . Leases The Company has entered into various equipment and property leases with terms of ten not The Company determines if an arrangement is a lease at inception. Leases with an initial term of twelve not not The following table summarizes the Company’s leases recorded on the Condensed Consolidated Balance Sheet (in thousands): March 31, 2020 December 31, 2019 Right-of-use assets: Finance leases, net, included in Property and equipment (1) $ 1,097 $ 1,203 Operating leases 28,678 7,683 Total right-of-use assets $ 29,775 $ 8,886 Lease liabilities: Finance leases $ 1,538 $ 1,641 Operating leases 27,714 7,889 Total lease liabilities $ 29,252 $ 9,530 ( 1 Finance lease right-of-use assets are presented net of accumulated amortization of $1.0 $0.9 March 31, 2020 December 31, 2019, Lease cost consists of the following (in thousands): Three Months Ended March 31, 2020 2019 Finance lease cost: Amortization of right-of-use assets $ 105 $ 109 Interest on lease liabilities 22 15 Operating lease cost 805 425 Short-term lease cost 190 262 Variable lease cost 42 40 Total lease cost $ 1,164 $ 851 The future maturities of lease liabilities as of March 31, 2020 Finance Leases Operating Leases Remainder of 2020 $ 375 $ 2,632 2021 382 2,852 2022 361 2,497 2023 157 2,235 2024 471 2,089 Thereafter - 25,913 Total lease payments 1,746 38,218 Amount representing interest (208 ) (10,504 ) Present value of lease liabilities 1,538 27,714 Current portion of lease liabilities (402 ) (2,450 ) Lease liabilities, less current portion (2) $ 1,136 $ 25,264 ( 1 Current portion of finance lease liabilities are included in Accrued liabilities. ( 2 Finance lease liabilities, less current portion are included in Other long-term liabilities. The following table summarizes the lease terms and discount rates for the lease liabilities: March 31, 2020 December 31, 2019 Weighted-average remaining lease term (years) Finance leases 3.60 3.79 Operating leases 17.99 8.31 Weighted-average discount rate Finance leases 5.42 % 5.40 % Operating leases 3.59 % 4.50 % The following table presents other information related to the operating and finance leases (in thousands): Three Months Ended March 31, 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ (22 ) $ (15 ) Operating cash flows from operating leases (774 ) (415 ) Financing cash flows from finance leases (103 ) (107 ) Right-of-use assets obtained in exchange for operating lease liabilities - 506

Note 7 - Fair Value Measurement

Note 7 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Fair Value Disclosures [Text Block]	7 . Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants at the measurement date. The authoritative guidance establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three 1 2 3 no The following table summarizes information regarding the Company’s financial assets and liabilities that are measured at fair value on a recurring basis (in thousands): Total Level 1 Level 2 Level 3 As of March 31, 2020 Financial assets: Deferred compensation plan $ 4,069 $ 3,409 $ 660 $ - Foreign currency forward contracts 259 - 259 - Total financial assets $ 4,328 $ 3,409 $ 919 $ - As of December 31, 2019 Financial assets: Deferred compensation plan $ 5,150 $ 4,268 $ 882 $ - Financial liabilities: Foreign currency forward contracts $ (138 ) $ - $ (138 ) $ - The deferred compensation plan assets consist of cash and several publicly traded stock and bond mutual funds, valued using quoted market prices in active markets, classified as Level 1 2 The Company’s foreign currency forward contracts are derivatives valued using various pricing models or discounted cash flow analyses that incorporate observable market parameters, such as interest rate yield curves and currency rates, and are classified as Level 2 The net carrying amounts of cash and cash equivalents, trade and other receivables, accounts payable, accrued liabilities, and borrowings on the line of credit approximate fair value due to the short-term nature of these instruments. The Company is obligated to repay the carrying value of the Company’s long-term debt. The fair value of the Company’s long-term debt is calculated using interest rates for the Company’s existing debt arrangements which are classified as Level 2 March 31, 2020,

Note 8 - Derivative Instruments

Note 8 - Derivative Instruments and Hedging Activities	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	8. Derivative Instruments and Hedging Activities For each foreign currency forward contract entered into in which the Company seeks to obtain cash flow hedge accounting treatment, the Company formally documents all relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking the hedge transaction, the nature of the risk being hedged, how the hedging instrument’s effectiveness in offsetting the hedged risk will be assessed prospectively and retrospectively, and a description of the method of measuring ineffectiveness. This process includes linking all foreign currency forward contracts to specific firm commitments or forecasted transactions and designating the foreign currency forward contracts as cash flow hedges. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the foreign currency forward contracts that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The effective portion of these hedged items is reflected in Unrealized gain (loss) on cash flow hedges on the Condensed Consolidated Statements of Comprehensive Income. If it is determined that a foreign currency forward contract is not As of March 31, 2020 December 31, 2019, $4.6 CAD$6.5 $6.1 CAD$7.9 All of the Company’s Canadian forward contracts have maturities less than twelve March 31, 2020. As of March 31, 2020 December 31, 2019, three March 31, 2020 2019, not $0.3 $0, March 31, 2020, $0. twelve

Note 9 - Share-based Compensati

Note 9 - Share-based Compensation	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	9 . Share-based Compensation The Company has one 2007 The Company recognizes the compensation cost of employee and director services received in exchange for awards of equity instruments based on the grant date estimated fair value of the awards. The Company estimates the fair value of RSUs and PSAs using the value of the Company’s stock on the date of grant. Share-based compensation cost is recognized over the period during which the employee or director is required to provide service in exchange for the award and, as forfeitures occur, the associated compensation cost recognized to date is reversed. For awards with performance-based payout conditions, the Company recognizes compensation cost based on the probability of achieving the performance conditions, with changes in expectations recognized as an adjustment to earnings in the period of change. Any recognized compensation cost is reversed if the conditions are ultimately not The following table summarizes share-based compensation expense recorded (in thousands): Three Months Ended March 31, 2020 2019 Cost of sales $ 142 $ 6 Selling, general, and administrative expense 318 16 Total $ 460 $ 22 Stock Option Awards The Company’s stock incentive plan provides that options become exercisable according to vesting schedules, which range from immediate to ratably over a 60 ten three March 31, 2020, 24,000 $24.15 March 31, 2020, no Restricted Stock Units and Performance Share Awards The Company’s stock incentive plan provides for equity instruments, such as RSUs and PSAs, which grant the right to receive a specified number of shares over a specified period of time. RSUs are service-based awards and vest according to vesting schedules, which range from immediate to ratably over a three The following table summarizes the Company’s RSU and PSA activity: Number of RSUs and PSAs (1) Weighted-Average Grant Date Fair Value Unvested RSUs and PSAs as of December 31, 2019 85,170 $ 23.56 RSUs and PSAs granted 97,834 26.61 Unvested RSUs and PSAs canceled (3,752 ) 23.56 RSUs and PSAs vested (2) (49,680 ) 23.56 Unvested RSUs and PSAs as of March 31, 2020 129,572 25.86 ( 1 The number of PSAs disclosed in this table are at the target level of 100%. ( 2 For the PSAs vested on March 31, 2020, 136%, The unvested balance of RSUs and PSAs as of March 31, 2020 91,000 0% 200%. As of March 31, 2020, $4.2 2.0

Note 10 - Commitments and Conti

Note 10 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	10 . Commitments and Contingencies Portland Harbor Superfund Site In December 2000, not 14 February 2016, June 2016, January 2017, $1 13 not 150 no In 2001, one February 2005, 2016, February 2020. Concurrent with the activities of the EPA and the ODEQ, the Portland Harbor Natural Resources Trustee Council (“Trustees”) sent some or all of the same parties, including the Company, a notice of intent to perform a Natural Resource Damage Assessment (“NRDA”) for the Portland Harbor Superfund Site to determine the nature and extent of natural resource damages under CERCLA Section 107. three one June 2014, $0.4 not may In January 2017, 2009, not The Company has insurance policies for defense costs, as well as indemnification policies it believes will provide reimbursement for the remediation assessed. However, the Company can provide no may All Sites The Company operates its facilities under numerous governmental permits and licenses relating to air emissions, stormwater runoff, and other environmental matters. The Company’s operations are also governed by many other laws and regulations, including those relating to workplace safety and worker health, principally the Occupational Safety and Health Act and regulations there under which, among other requirements, establish noise and dust standards. The Company believes it is in material compliance with its permits and licenses and these laws and regulations, and the Company does not Other Contingencies and Legal Proceedings From time to time, the Company is involved in litigation relating to claims arising out of its operations in the normal course of its business. The Company maintains insurance coverage against potential claims in amounts that are believed to be adequate. To the extent that insurance does not not On April 21, 2019, no October 2019. three March 31, 2020, $0.4 Guarantees The Company has entered into certain letters of credit that total $1.6 March 31, 2020.

Note 11 - Revenue

Note 11 - Revenue	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	11 . Revenue The Company manufactures water infrastructure steel pipe products, which are generally made to custom specifications for installation contractors serving projects funded by public water agencies, as well as precast and reinforced concrete products. Generally, each of the Company’s contracts with its customers contains a single performance obligation, as the promise to transfer products is not not Revenue for water infrastructure steel pipe products is recognized over time as the manufacturing process progresses because of the Company’s right to payment for work performed to date plus a reasonable profit on cancellations for unique products that have no may Revisions in contract estimates resulted in a decrease in revenue of $0.4 $1.5 three March 31, 2020 2019, Revenue for water infrastructure precast concrete products is recognized at the time control is transferred to customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for the products. All variable consideration that may not The Company does not Disaggregation of Revenue The following table disaggregates revenue by recognition over time or at a point in time, as the Company believes it best depicts how the nature, amount, timing, and uncertainty of its revenue and cash flows are affected by economic factors (in thousands): Three Months Ended March 31, 2020 2019 Over time $ 60,878 $ 62,643 Point in time 8,045 - Net sales $ 68,923 $ 62,643 Contract Assets and Liabilities Contract assets primarily represent revenue earned over time but not 30 Contract liabilities represent advance billings on contracts, typically for steel. The Company recognized revenue that was included in the contract liabilities balance at the beginning of each period of $6.2 $3.3 three March 31, 2020 2019, Backlog Backlog represents the balance of remaining performance obligations under signed contracts for water infrastructure steel pipe products. As of March 31, 2020, $170 61% 2020, 37% 2021,

Note 12 - Income Taxes

Note 12 - Income Taxes	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12 . Income Taxes The Company files income tax returns in the United States Federal jurisdiction, in a limited number of foreign jurisdictions, and in many state jurisdictions. With few exceptions, the Company is no 2015. The Company recorded income tax expense at an estimated effective income tax rate of 45.6% 8.1% three March 31, 2020 2019, three March 31, 2020 three March 31, 2019

Note 13 - Net Income Per Share

Note 13 - Net Income Per Share	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Earnings Per Share [Text Block]	13 . Net Income per Share Basic net income per share is computed by dividing the net income by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by giving effect to all potential shares of common stock, including stock options, RSUs, and PSAs, to the extent dilutive. Performance-based PSAs are considered dilutive when the related performance conditions have been met assuming the end of the reporting period represents the end of the performance period. In periods with a net loss, all potential shares of common stock are excluded from the computation of diluted net loss per share as the impact would be antidilutive. Net income per basic and diluted weighted-average common share outstanding was calculated as follows (in thousands, except per share amounts): Three Months Ended March 31, 2020 2019 Net income $ 564 $ 2,165 Basic weighted-average common shares outstanding 9,751 9,735 Effect of potentially dilutive common shares (1) 78 - Diluted weighted-average common shares outstanding 9,829 9,735 Net income per common share: Basic $ 0.06 $ 0.22 Diluted $ 0.06 $ 0.22 ( 1 The weighted-average number of antidilutive shares not 24,000 three March 31, 2019.

Note 14 - Recent Accounting and

Note 14 - Recent Accounting and Reporting Developments	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	14 . Recent Accounting and Reporting Developments There have been no 2019 10 Accounting Changes In August 2018, No. 2018 13, 820 2018 13” 2018 13 January 1, 2020 not

Note 15 - Subsequent Event

Note 15 - Subsequent Event	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	15. Subsequent Event In early April 2020, April 30, 2020 not 19. April 2020, May 31, 2020. not While COVID- 19 not first 2020, COVID‑19 may may 19 may 19

Note 2 - Business Combination (

Note 2 - Business Combination (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	Assets Cash and cash equivalents $ 691 Trade and other receivables 7,225 Inventories 5,537 Prepaid expenses and other 356 Property and equipment 9,096 Operating lease right-of-use assets 21,684 Intangible assets 11,165 Total assets acquired 55,754 Liabilities Accounts payable 1,395 Accrued liabilities 1,189 Operating lease liabilities 20,454 Deferred income taxes 5,343 Other long-term liabilities 939 Total liabilities assumed 29,320 Goodwill 22,985 Total purchase consideration $ 49,419
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	Estimated Useful Life Fair Value (In years) (In thousands) Customer relationships 11.0 $ 8,031 Trade names 10.0 2,093 Backlog 0.9 1,041 Total intangible assets 9.9 $ 11,165
Business Acquisition, Pro Forma Information [Table Text Block]	Three Months Ended March 31, 2020 2019 Net sales $ 72,512 $ 72,420 Net income 2,424 1,966

Note 3 - Inventories (Tables)

Note 3 - Inventories (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule Of Inventory Current And Non Current [Table Text Block]	March 31, 2020 December 31, 2019 Raw materials $ 30,273 $ 26,772 Work-in-process 2,261 1,579 Finished goods 5,097 683 Supplies 1,628 1,620 Total inventories $ 39,259 $ 30,654

Note 4 - Goodwill and Intangi_2

Note 4 - Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Goodwill [Table Text Block]	Goodwill, December 31, 2019 $ - Acquisition of Geneva (Note 2) 22,985 Goodwill, March 31, 2020 $ 22,985
Schedule of Finite-Lived Intangible Assets [Table Text Block]	Gross Carrying Accumulated Intangible Amount Amortization Assets, Net As of March 31, 2020 Customer relationships $ 9,409 $ (983 ) $ 8,426 Trade names and trademarks 3,225 (506 ) 2,719 Backlog 1,041 (189 ) 852 Total $ 13,675 $ (1,678 ) $ 11,997 As of December 31, 2019 Customer relationships $ 1,378 $ (827 ) $ 551 Trade names and trademarks 1,132 (452 ) 680 Total $ 2,510 $ (1,279 ) $ 1,231
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year ending December 31, Remainder of 2020 $ 1,716 2021 1,153 2022 1,153 2023 1,153 2024 1,015 Thereafter 5,807 Total amortization expense $ 11,997

Note 5 - Line of Credit and L_2

Note 5 - Line of Credit and Long-term Debt (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Maturities of Long-term Debt [Table Text Block]	Year ending December 31, Remainder of 2020 $ 2,117 2021 3,176 2022 3,176 2023 3,176 2024 4,234 Thereafter - Total future principal payments $ 15,879

Note 6 - Leases (Tables)

Note 6 - Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Lessee, Lease, Assets and Liabilities [Table Text Block]	March 31, 2020 December 31, 2019 Right-of-use assets: Finance leases, net, included in Property and equipment (1) $ 1,097 $ 1,203 Operating leases 28,678 7,683 Total right-of-use assets $ 29,775 $ 8,886 Lease liabilities: Finance leases $ 1,538 $ 1,641 Operating leases 27,714 7,889 Total lease liabilities $ 29,252 $ 9,530
Lease, Cost [Table Text Block]	Three Months Ended March 31, 2020 2019 Finance lease cost: Amortization of right-of-use assets $ 105 $ 109 Interest on lease liabilities 22 15 Operating lease cost 805 425 Short-term lease cost 190 262 Variable lease cost 42 40 Total lease cost $ 1,164 $ 851
Lessee, Liability, Maturity [Table Text Block]	Finance Leases Operating Leases Remainder of 2020 $ 375 $ 2,632 2021 382 2,852 2022 361 2,497 2023 157 2,235 2024 471 2,089 Thereafter - 25,913 Total lease payments 1,746 38,218 Amount representing interest (208 ) (10,504 ) Present value of lease liabilities 1,538 27,714 Current portion of lease liabilities (402 ) (2,450 ) Lease liabilities, less current portion (2) $ 1,136 $ 25,264
Lease Terms and Discount Rates for Lease Liabilities [Table Text Block]	March 31, 2020 December 31, 2019 Weighted-average remaining lease term (years) Finance leases 3.60 3.79 Operating leases 17.99 8.31 Weighted-average discount rate Finance leases 5.42 % 5.40 % Operating leases 3.59 % 4.50 %
Other Information Related to Operating and Finance Leases [Table Text Block]	Three Months Ended March 31, 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ (22 ) $ (15 ) Operating cash flows from operating leases (774 ) (415 ) Financing cash flows from finance leases (103 ) (107 ) Right-of-use assets obtained in exchange for operating lease liabilities - 506

Note 7 - Fair Value Measureme_2

Note 7 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Total Level 1 Level 2 Level 3 As of March 31, 2020 Financial assets: Deferred compensation plan $ 4,069 $ 3,409 $ 660 $ - Foreign currency forward contracts 259 - 259 - Total financial assets $ 4,328 $ 3,409 $ 919 $ - As of December 31, 2019 Financial assets: Deferred compensation plan $ 5,150 $ 4,268 $ 882 $ - Financial liabilities: Foreign currency forward contracts $ (138 ) $ - $ (138 ) $ -

Note 9 - Share-based Compensa_2

Note 9 - Share-based Compensation (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Three Months Ended March 31, 2020 2019 Cost of sales $ 142 $ 6 Selling, general, and administrative expense 318 16 Total $ 460 $ 22
Schedule of Unvested Restricted Stock Units and Performance Share Awards Activity [Table Text Block]	Number of RSUs and PSAs (1) Weighted-Average Grant Date Fair Value Unvested RSUs and PSAs as of December 31, 2019 85,170 $ 23.56 RSUs and PSAs granted 97,834 26.61 Unvested RSUs and PSAs canceled (3,752 ) 23.56 RSUs and PSAs vested (2) (49,680 ) 23.56 Unvested RSUs and PSAs as of March 31, 2020 129,572 25.86

Note 11 - Revenue (Tables)

Note 11 - Revenue (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended March 31, 2020 2019 Over time $ 60,878 $ 62,643 Point in time 8,045 - Net sales $ 68,923 $ 62,643

Note 13 - Net Income Per Share

Note 13 - Net Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended March 31, 2020 2019 Net income $ 564 $ 2,165 Basic weighted-average common shares outstanding 9,751 9,735 Effect of potentially dilutive common shares (1) 78 - Diluted weighted-average common shares outstanding 9,829 9,735 Net income per common share: Basic $ 0.06 $ 0.22 Diluted $ 0.06 $ 0.22

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Details Textual) $ in Thousands	Jan. 31, 2020	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)
Number of Operating Segments	1	1
Revenue from Contract with Customer, Including Assessed Tax		$ 68,923	$ 62,643
Out of Period Adjustment [Member]
Revenue from Contract with Customer, Including Assessed Tax			$ 1,200

Note 2 - Business Combination_2

Note 2 - Business Combination (Details Textual) $ in Thousands	Jan. 31, 2020USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2020
Number of Operating Segments	1		1
Geneva Pipe Company, Inc [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Consideration Transferred, Total	$ 49,419
Business Combination, Acquisition Related Costs	$ 2,500
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		$ 8,000

Note 2 - Business Combination -

Note 2 - Business Combination - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Liabilities
Goodwill		$ 22,985
Geneva Pipe Company, Inc [Member]
Assets
Cash and cash equivalents	$ 691
Trade and other receivables	7,225
Inventories	5,537
Prepaid expenses and other	356
Property and equipment	9,096
Operating lease right-of-use assets	21,684
Intangible assets	11,165
Total assets acquired	55,754
Liabilities
Accounts payable	1,395
Accrued liabilities	1,189
Operating lease liabilities	20,454
Deferred income taxes	5,343
Other long-term liabilities	939
Total liabilities assumed	29,320
Goodwill	22,985
Total purchase consideration	$ 49,419

Note 2 - Business Combination_3

Note 2 - Business Combination - Intangible Assets Acquired (Details) - Geneva Pipe Company, Inc [Member] $ in Thousands	Jan. 31, 2020USD ($)
Intangible Asset Acquired, Useful Life (Year)	9 years 328 days
Intangible Asset Acquired, Fair Value	$ 11,165
Customer Relationships [Member]
Intangible Asset Acquired, Useful Life (Year)	11 years
Intangible Asset Acquired, Fair Value	$ 8,031
Trade Names [Member]
Intangible Asset Acquired, Useful Life (Year)	10 years
Intangible Asset Acquired, Fair Value	$ 2,093
Backlog [Member]
Intangible Asset Acquired, Useful Life (Year)	328 days
Intangible Asset Acquired, Fair Value	$ 1,041

Note 2 - Business Combination_4

Note 2 - Business Combination - Pro Forma Summary (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 72,512	$ 72,420
Net income	$ 2,424	$ 1,966

Note 3 - Inventories - Componen

Note 3 - Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Raw materials	$ 30,273	$ 26,772
Work-in-process	2,261	1,579
Finished goods	5,097	683
Supplies	1,628	1,620
Total inventories	$ 39,259	$ 30,654

Note 4 - Goodwill and Intangi_3

Note 4 - Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Goodwill
Goodwill	22,985
Geneva Pipe Company, Inc [Member]
Acquisition of Geneva (Note 2)	$ 22,985

Note 4 - Goodwill and Intangi_4

Note 4 - Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Intangible Assets, Gross	$ 13,675	$ 2,510
Intangible Assets, Accumulated amortization	(1,678)	(1,279)
Intangible assets, net	11,997	1,231
Customer Relationships [Member]
Intangible Assets, Gross	9,409	1,378
Intangible Assets, Accumulated amortization	(983)	(827)
Intangible assets, net	8,426	551
Trademarks and Trade Names [Member]
Intangible Assets, Gross	3,225	1,132
Intangible Assets, Accumulated amortization	(506)	(452)
Intangible assets, net	2,719	$ 680
Backlog [Member]
Intangible Assets, Gross	1,041
Intangible Assets, Accumulated amortization	(189)
Intangible assets, net	$ 852

Note 4 - Intangible Assets - Su

Note 4 - Intangible Assets - Summary of Estimated Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Remainder of 2020	$ 1,716
2021	1,153
2022	1,153
2023	1,153
2024	1,015
Thereafter	5,807
Total amortization expense	$ 11,997	$ 1,231

Note 5 - Line of Credit and L_3

Note 5 - Line of Credit and Long-term Debt (Details Textual) - Wells Fargo Bank, N.A. [Member] - USD ($) $ in Thousands	Oct. 25, 2018	Mar. 31, 2020	Dec. 31, 2019
Term Loan [Member]
Long-term Debt, Total		$ 15,900
Term Loan [Member]
Debt Instrument, Face Amount		15,900
Long-term Debt, Monthly Repayment of Principal		300
Long-term Debt, Total		$ 15,879
Debt Instrument, Covenant, Maximum Debt Percentage of Securing Property		60.00%
Debt Instrument, Covenant, Repayment Percentage of Excess Cash Flow		20.00%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate		2.00%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate		2.50%
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 74,000
Maximum Senior Leverage Ratio		3
Minimum Fixed Charge Coverage Ratio		1.1
Long-term Line of Credit, Total		$ 0	$ 0
Line of Credit Facility, Remaining Borrowing Capacity		$ 60,400
Debt, Weighted Average Interest Rate		3.04%	3.43%
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%

Note 5 - Line of Credit and L_4

Note 5 - Line of Credit and Long-term Debt - Future Principal Payments of Long-term Debt (Details) - Term Loan [Member] - Wells Fargo Bank, N.A. [Member] $ in Thousands	Mar. 31, 2020USD ($)
Remainder of 2020	$ 2,117
2021	3,176
2022	3,176
2023	3,176
2024	4,234
Thereafter
Total future principal payments	$ 15,879

Note 6 - Leases (Details Textua

Note 6 - Leases (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finance Lease, Right-of-Use Asset, Accumulated Amortization	$ 1	$ 0.9
Maximum [Member]
Lessee, Term of Contract (Year)	10 years

Note 6 - Leases - Leases Record

Note 6 - Leases - Leases Recorded on the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Operating leases, Right-of-use assets		$ 28,678	$ 7,683
Total right-of-use assets		29,775	8,886
Finance leases, liabilities		1,538	1,641
Operating leases, liabilities		27,714	7,889
Total lease liabilities		29,252	9,530
Property and Equipment [Member]
Finance leases, net, included in Property and equipment (1)	[1]	$ 1,097	$ 1,203
[1]	Finance lease right-of-use assets are presented net of accumulated amortization of $1.0 million and $0.9 million as of March 31, 2020 and December 31, 2019, respectively.

Note 6 - Leases - Lease Cost (D

Note 6 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Amortization of right-of-use assets	$ 105	$ 109
Interest on lease liabilities	22	15
Operating lease cost	805	425
Short-term lease cost	190	262
Variable lease cost	42	40
Total lease cost	$ 1,164	$ 851

Note 6 - Leases - Future Maturi

Note 6 - Leases - Future Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Remainder of 2020		$ 375
Remainder of 2019, operating leases		2,632
2021, finance leases		382
2021, operating leases		2,852
2022, finance leases		361
2022, operating leases		2,497
2023, finance leases		157
2023, operating leases		2,235
2024, finance leases		471
2024, operating leases		2,089
Thereafter, finance leases
Thereafter, operating leases		25,913
Total lease payments, finance leases		1,746
Total lease payments, operating leases		38,218
Amount representing interest, finance leases		(208)
Amount representing interest, operating leases		(10,504)
Finance leases, liabilities		1,538	$ 1,641
Operating leases, liabilities		27,714	7,889
Current portion of lease liabilities, included in Accrued liabilities, finance leases	[1]	(402)
Current portion of lease liabilities, operating leases		(2,450)	(1,642)
Lease liabilities, less current portion, included in Other long-term liabilities, finance leases	[2]	1,136
Operating lease liabilities, less current portion		$ 25,264	$ 6,247
[1]	Current portion of finance lease liabilities are included in Accrued liabilities.
[2]	Finance lease liabilities, less current portion are included in Other long-term liabilities.

Note 6 - Leases - Lease Terms a

Note 6 - Leases - Lease Terms and Discount Rates for Lease Liabilities (Details)	Mar. 31, 2020	Dec. 31, 2019
Finance leases, weighted-average remaining lease term (Year)	3 years 219 days	3 years 288 days
Operating leases, weighted-average remaining lease term (Year)	17 years 361 days	8 years 113 days
Finance leases, weighted-average discount rate	5.42%	5.40%
Operating leases, weighted-average discount rate	3.59%	4.50%

Note 6 - Leases - Other Informa

Note 6 - Leases - Other Information Related to Operating and Finance Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating cash flows from finance leases	$ (22)	$ (15)
Operating cash flows from operating leases	(774)	(415)
Payments on finance lease obligations	(103)	(107)
Right-of-use assets obtained in exchange for operating lease liabilities		$ 506

Note 7 - Fair Value Measureme_3

Note 7 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deferred compensation plan	$ 4,069	$ 5,150
Foreign currency forward contracts	259
Total financial assets	4,328
Foreign currency forward contracts		(138)
Fair Value, Inputs, Level 1 [Member]
Deferred compensation plan	3,409	4,268
Foreign currency forward contracts
Total financial assets	3,409
Foreign currency forward contracts
Fair Value, Inputs, Level 2 [Member]
Deferred compensation plan	660	882
Foreign currency forward contracts	259
Total financial assets	919
Foreign currency forward contracts		(138)
Fair Value, Inputs, Level 3 [Member]
Deferred compensation plan
Foreign currency forward contracts
Total financial assets
Foreign currency forward contracts

Note 8 - Derivative Instrumen_2

Note 8 - Derivative Instruments and Hedging Activities (Details Textual) - Foreign Exchange Forward [Member] $ in Thousands, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Mar. 31, 2020CAD ($)	Dec. 31, 2019CAD ($)
Unrealized Gain on Foreign Currency Derivatives, before Tax	$ 0
Maximum [Member]
Maturity Period For Forward Contracts (Month)	1 year
Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 4,600	$ 6,100	$ 6.5	$ 7.9
Not Designated as Hedging Instrument [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total	$ 300	$ 0

Note 9 - Share-based Compensa_3

Note 9 - Share-based Compensation (Details Textual) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)$ / sharesshares
Number Of Active Stock Incentive Plans	1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)	24,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 24.15
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	0
Restricted Stock Units and Performance Share Award Target Level, Percentage	100.00%
Performance Awards Issued Multiplier	136.00%
Minimum [Member]
Performance Awards Issued Multiplier	0.00%
Maximum [Member]
Performance Awards Issued Multiplier	200.00%
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Month)	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Month)	3 years
Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number At Target Level Of Performance (in shares)	91,000
Restricted Stock Units and Performance Stock Awards [Member]
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $	$ 4.2
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years

Note 9 - Share-based Compensa_4

Note 9 - Share-based Compensation - Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based compensation expense	$ 460	$ 22
Cost of Sales [Member]
Share-based compensation expense	142	6
Selling, General and Administrative Expenses [Member]
Share-based compensation expense	$ 318	$ 16

Note 9 - Share-based Compensa_5

Note 9 - Share-based Compensation - RSU and PSA Activity (Details) - Restricted Stock Units and Performance Stock Awards [Member]	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Unvested RSUs and PSAs (in shares) | shares	85,170	[1]
Unvested RSUs and PSAs, weighted average grant date fair value (in dollars per share) | $ / shares	$ 23.56
RSUs and PSAs granted (in shares) | shares	97,834	[1]
RSUs and PSAs granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 26.61
Unvested RSUs and PSAs canceled (in shares) | shares	(3,752)	[1]
Unvested RSUs and PSAs canceled, weighted average grant date fair value (in dollars per share) | $ / shares	$ 23.56
RSUs and PSAs vested (2) (in shares) | shares	(49,680)	[1],[2]
RSUs and PSAs vested (2) (in dollars per share) | $ / shares	$ 23.56	[2]
Unvested RSUs and PSAs (in shares) | shares	129,572	[1]
Unvested RSUs and PSAs, weighted average grant date fair value (in dollars per share) | $ / shares	$ 25.86
[1]	The number of PSAs disclosed in this table are at the target level of 100%.
[2]	For the PSAs vested on March 31, 2020, the actual number of common shares that were issued was determined by multiplying the PSAs by a payout percentage of 136%, based on the performance-based conditions achieved.

Note 10 - Commitments and Con_2

Note 10 - Commitments and Contingencies (Details Textual) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2017USD ($)	Mar. 31, 2020USD ($)	Jun. 30, 2014USD ($)
Number Of Potentially Responsible Parties	150
Estimated Cost of EPA Selected Remedy	$ 1,000
Estimated Time to Complete Selected EPA Remedy (Year)	13 years
Letters of Credit Outstanding, Amount		$ 1.6
Fire [Member]
Business Interruption Costs		$ 0.4
Portland Harbor Natural Resources Trustee Council [Member]
Loss Contingency, Accrual, Current			$ 0.4
Lower Willamette Group [Member]
Number Of Potentially Responsible Parties	14

Note 11 - Revenue 1 (Details Te

Note 11 - Revenue 1 (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Increase (Decrease) in Revenue from Contract with Customers, Including Assessed Tax	$ (0.4)	$ (1.5)
Contract with Customer, Liability, Revenue Recognized	6.2	$ 3.3
Revenue, Remaining Performance Obligation, Amount	$ 170

Note 11 - Revenue 2 (Details Te

Note 11 - Revenue 2 (Details Textual)	Mar. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Percentage	61.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	273 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Percentage	37.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year

Note 11 - Revenue - Disaggregat

Note 11 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 68,923	$ 62,643
Transferred over Time [Member]
Net sales	60,878	62,643
Transferred at Point in Time [Member]
Net sales	$ 8,045

Note 12 - Income Taxes (Details

Note 12 - Income Taxes (Details Textual)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Effective Income Tax Rate Reconciliation, Percent, Total	45.60%	8.10%

Note 13 - Net Income Per Shar_2

Note 13 - Net Income Per Share (Details Textual)	3 Months Ended
	Mar. 31, 2019shares
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	24,000

Note 13 - Net Income Per Shar_3

Note 13 - Net Income Per Share - Net Loss Per Basic and Diluted Weighted Average Common Shares Outstanding (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Net income		$ 564	$ 2,165
Basic weighted-average common shares outstanding (in shares)		9,751	9,735
Effect of potentially dilutive common shares (1) (in shares)	[1]	78
Diluted weighted-average common shares outstanding (in shares)		9,829	9,735
Basic (in dollars per share)		$ 0.06	$ 0.22
Diluted (in dollars per share)		$ 0.06	$ 0.22
[1]	The weighted-average number of antidilutive shares not included in the computation of diluted net income per share was approximately 24,000 for the three months ended March 31, 2019.