$CALX
CALIX, INC Stock $calx

$calx Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-K Financial Statement

#000140666621000029 Filed on February 22, 2021

Income Statement

Concept	2021 Q1	2020 Q4	2020
Revenue		$170.0M	$541.2M
YoY Change		41.44%	27.55%
Cost Of Revenue		$81.00M	$274.2M
YoY Change		23.66%	16.0%
Gross Profit		$89.00M	$267.0M
YoY Change		62.67%	42.09%
Gross Profit Margin		52.35%	49.33%
Selling, General & Admin		$41.00M	$138.6M
YoY Change		24.24%	15.84%
% of Gross Profit		46.07%	51.92%
Research & Development		$23.30M	$85.26M
YoY Change		14.78%	5.02%
% of Gross Profit		26.18%	31.93%
Depreciation & Amortization		$3.410M	$13.70M
YoY Change		17.18%	33.01%
% of Gross Profit		3.83%	5.13%
Operating Expenses		$64.30M	$230.2M
YoY Change		20.86%	13.2%
Operating Profit		$24.70M	$36.85M
YoY Change		1553.28%	-339.24%
Interest Expense		-$300.0K	-$1.600M
YoY Change		-25.0%	60.0%
% of Operating Profit		-1.21%	-4.34%
Other Income/Expense, Net		-$200.0K	-$2.562M
YoY Change		-33.33%	126.53%
Pretax Income		$24.30M	$34.28M
YoY Change		2937.5%	-307.38%
Income Tax		$200.0K	$800.0K
% Of Pretax Income		0.82%	2.33%
Net Earnings		$24.10M	$33.48M
YoY Change		4749.09%	-289.24%
Net Earnings / Revenue		14.18%	6.19%
Basic Earnings Per Share			$0.57
Diluted Earnings Per Share		$359.7K	$0.54
COMMON SHARES
Basic Shares Outstanding	62.45M shares	61.77M shares	59.07M shares
Diluted Shares Outstanding			62.00M shares

Balance Sheet

Concept	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$133.8M	$133.8M
YoY Change	185.9%	185.9%
Cash & Equivalents	$80.81M	$80.80M
Short-Term Investments	$53.00M	$53.00M
Other Short-Term Assets	$11.40M	$11.40M
YoY Change	10.68%	10.68%
Inventory	$52.27M	$52.30M
Prepaid Expenses
Receivables	$69.42M	$69.40M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$266.9M	$266.9M
YoY Change	85.58%	85.61%
LONG-TERM ASSETS
Property, Plant & Equipment	$20.38M	$32.10M
YoY Change	-5.32%	-14.17%
Goodwill	$116.2M
YoY Change	0.0%
Intangibles	$9.517M
YoY Change	-21.66%
Long-Term Investments
YoY Change
Other Assets	$12.17M	$2.600M
YoY Change	-37.42%	-86.6%
Total Long-Term Assets	$160.5M	$160.5M
YoY Change	-7.25%	-7.23%
TOTAL ASSETS
Total Short-Term Assets	$266.9M	$266.9M
Total Long-Term Assets	$160.5M	$160.5M
Total Assets	$427.4M	$427.4M
YoY Change	34.89%	34.91%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$13.12M	$13.10M
YoY Change	21.56%	21.3%
Accrued Expenses	$68.74M	$54.00M
YoY Change	19.45%	22.17%
Deferred Revenue	$19.19M
YoY Change	11.84%
Short-Term Debt	$0.00	$0.00
YoY Change	-100.0%	-100.0%
Long-Term Debt Due	$2.900M	$2.900M
YoY Change	-27.5%	-27.5%
Total Short-Term Liabilities	$101.0M	$101.0M
YoY Change	-12.51%	-12.55%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$13.14M	$46.00M
YoY Change	-10.17%	-2.75%
Total Long-Term Liabilities	$13.14M	$46.00M
YoY Change	-10.17%	-2.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$101.0M	$101.0M
Total Long-Term Liabilities	$13.14M	$46.00M
Total Liabilities	$147.0M	$147.0M
YoY Change	-9.69%	-9.71%
SHAREHOLDERS EQUITY
Retained Earnings	-$669.1M
YoY Change	-4.77%
Common Stock	$949.6M
YoY Change	5.81%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$0.00
YoY Change	-100.0%
Treasury Stock Shares	0.000 shares
Shareholders Equity	$280.3M	$280.3M
YoY Change
Total Liabilities & Shareholders Equity	$427.4M	$427.4M
YoY Change	34.89%	34.91%

Cashflow Statement

Concept	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$24.10M	$33.48M
YoY Change	4749.09%	-289.24%
Depreciation, Depletion And Amortization	$3.410M	$13.70M
YoY Change	17.18%	33.01%
Cash From Operating Activities	$30.47M	$51.41M
YoY Change	4814.52%	1004.62%
INVESTING ACTIVITIES
Capital Expenditures	-$2.200M	$7.819M
YoY Change	126.8%	-41.44%
Acquisitions
YoY Change
Other Investing Activities	-$12.99M	-$52.98M
YoY Change
Cash From Investing Activities	-$15.20M	-$60.80M
YoY Change	1467.01%	355.34%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$60.06M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	620.0K	$42.15M
YoY Change	-93.38%	605.86%
NET CHANGE
Cash From Operating Activities	30.47M	$51.41M
Cash From Investing Activities	-15.20M	-$60.80M
Cash From Financing Activities	620.0K	$42.15M
Net Change In Cash	15.89M	$33.35M
YoY Change	76.36%	-1283.88%
FREE CASH FLOW
Cash From Operating Activities	$30.47M	$51.41M
Capital Expenditures	-$2.200M	$7.819M
Free Cash Flow	$32.67M	$43.59M
YoY Change	1954.72%	-601.09%

Facts In Submission

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CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-584000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	151934000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11181000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	442000	USD
CY2019	calx	Stock Issued During Period Value Performance Restricted Stock Award Netof Forfeitures StockIssuedDuringPeriodValuePerformanceRestrictedStockAwardNetofForfeitures	-167000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	8433000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-17694000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-101000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	154028000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13960000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	8984000	USD
CY2020	calx	Stock Issued During Period Value Performance Restricted Stock Award Netof Forfeitures StockIssuedDuringPeriodValuePerformanceRestrictedStockAwardNetofForfeitures	0	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	9143000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	60063000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	0	USD
CY2020	us-gaap	Profit Loss ProfitLoss	33484000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	663000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	280325000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	33484000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-17694000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-19298000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	13960000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11181000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	17473000	USD
CY2020	us-gaap	Depreciation Depreciation	13718000	USD
CY2019	us-gaap	Depreciation Depreciation	10316000	USD
CY2018	us-gaap	Depreciation Depreciation	9187000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-3914000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-2636000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-326000	USD
CY2020	calx	Gain Loss On Sale Of Product Line GainLossOnSaleOfProductLine	0	USD
CY2019	calx	Gain Loss On Sale Of Product Line GainLossOnSaleOfProductLine	0	USD
CY2018	calx	Gain Loss On Sale Of Product Line GainLossOnSaleOfProductLine	6704000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	22910000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-20517000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-13858000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12116000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-9998000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	20639000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-773000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	63000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3579000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2190000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-29440000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4596000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	11922000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1836000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2791000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3596000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2401000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1426000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	2878000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-3362000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-183000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	51409000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4654000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3560000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7819000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	13353000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10426000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	72982000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	20000000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2020	calx	Proceeds From Sale Of Product Line ProceedsFromSaleOfProductLine	0	USD
CY2019	calx	Proceeds From Sale Of Product Line ProceedsFromSaleOfProductLine	0	USD
CY2018	calx	Proceeds From Sale Of Product Line ProceedsFromSaleOfProductLine	10350000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-60801000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-13353000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-76000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	8984000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	442000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	384000	USD
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	9143000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	8433000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	7297000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	167000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	74000	USD
CY2020	calx	Payments For Financing Arrangements PaymentsForFinancingArrangements	5758000	USD
CY2019	calx	Payments For Financing Arrangements PaymentsForFinancingArrangements	2737000	USD
CY2018	calx	Payments For Financing Arrangements PaymentsForFinancingArrangements	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	60063000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	30000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	143300000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	557915000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	60000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	143300000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	557915000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	285000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	115000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	42147000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5971000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	7492000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	595000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-89000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-477000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	33350000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2817000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10499000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47457000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	50274000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	39775000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80807000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47457000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	50274000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	1686000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1123000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	649000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	751000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	403000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	561000	USD
CY2020	calx	Change In Capital Expenditures Incurred But Not Yet Paid ChangeInCapitalExpendituresIncurredButNotYetPaid	-597000	USD
CY2019	calx	Change In Capital Expenditures Incurred But Not Yet Paid ChangeInCapitalExpendituresIncurredButNotYetPaid	-2435000	USD
CY2018	calx	Change In Capital Expenditures Incurred But Not Yet Paid ChangeInCapitalExpendituresIncurredButNotYetPaid	8459000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements is in conformity with U.S. GAAP, which requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. For the Company, these estimates include, but are not limited to: allowances for doubtful accounts and sales returns, excess and obsolete inventory, allowances for obligations to its contract manufacturers, valuation of stock-based compensation, useful lives assigned to long-lived assets, standard and extended warranty costs and contingencies. Actual results could differ from those estimates, and such differences could be material to the Company’s financial position and results of operations.</span></div>
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Credit Risk and Inventory Supplier Concentrations</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, marketable securities and accounts receivable. Cash equivalents consist of money market funds and marketable securities with a maturity at the date of purchase of ninety days or less, which are invested through financial institutions in the United States. Deposits in and investments held by these financial institutions may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. The Company also has approximately $3.0 million of cash held by its foreign subsidiaries in Brazil, China and the United Kingdom. Management believes that the financial institutions that hold the Company’s cash and cash equivalents are financially sound and, accordingly, minimal credit risk exists with respect to these cash and cash equivalents.</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company depends primarily on a small number of outside contract manufacturers (“CMs”) and original design manufacturers (“ODMs”) for the bulk of its finished goods inventory. The Company generally purchases its products through purchase orders with its suppliers. While the Company seeks to maintain a sufficient supply of its products, the Company’s business and results of operations could be adversely affected by a stoppage or delay in receiving such products, the receipt of defective parts, an increase in price of such products or the Company’s inability to obtain lower prices from its CMs, ODMs and other suppliers in response to competitive pressures.</span></div>
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	80807000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	46829000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	0	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	628000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80807000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47457000	USD
CY2020Q4	calx	Cash Cash Equivalents Restricted Cash And Marketable Securities CashCashEquivalentsRestrictedCashAndMarketableSecurities	133789000	USD
CY2019Q4	calx	Cash Cash Equivalents Restricted Cash And Marketable Securities CashCashEquivalentsRestrictedCashAndMarketableSecurities	47457000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	70824000	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	46883000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1405000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	374000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	69419000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	46509000	USD
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	34000	USD
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	656000	USD
CY2020Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	52234000	USD
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	39497000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	52268000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	40153000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	66239000	USD
CY2018	us-gaap	Depreciation Depreciation	9200000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	72871000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	45858000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	51344000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20381000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21527000	USD
CY2020	us-gaap	Depreciation Depreciation	13700000	USD
CY2019	us-gaap	Depreciation Depreciation	10300000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	9517000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	12148000	USD
CY2020Q4	calx	Other Assets Capitalized Cloud Implementation Costs OtherAssetsCapitalizedCloudImplementationCosts	1287000	USD
CY2019Q4	calx	Other Assets Capitalized Cloud Implementation Costs OtherAssetsCapitalizedCloudImplementationCosts	6089000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1361000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1203000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	12165000	USD
CY2020Q4	calx	Accrued Excess And Obsolete Inventory At Contract Manufacturer AccruedExcessAndObsoleteInventoryAtContractManufacturer	3992000	USD
CY2019Q4	calx	Accrued Excess And Obsolete Inventory At Contract Manufacturer AccruedExcessAndObsoleteInventoryAtContractManufacturer	1925000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	19440000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	23740000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	19010000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	9208000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	7294000	USD
CY2020Q4	calx	Accrued Customer Rebates AccruedCustomerRebates	8374000	USD
CY2019Q4	calx	Accrued Customer Rebates AccruedCustomerRebates	7252000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	4497000	USD
CY2019Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	4996000	USD
CY2020Q4	calx	Taxes Payable Current Excluding Accrued Income Taxes TaxesPayableCurrentExcludingAccruedIncomeTaxes	3476000	USD
CY2019Q4	calx	Taxes Payable Current Excluding Accrued Income Taxes TaxesPayableCurrentExcludingAccruedIncomeTaxes	2021000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2994000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2663000	USD
CY2020Q4	calx	Accrued Equipment Financing Arrangements Current AccruedEquipmentFinancingArrangementsCurrent	2925000	USD
CY2019Q4	calx	Accrued Equipment Financing Arrangements Current AccruedEquipmentFinancingArrangementsCurrent	4044000	USD
CY2020Q4	calx	Accrued Freight AccruedFreight	1955000	USD
CY2019Q4	calx	Accrued Freight AccruedFreight	808000	USD
CY2020Q4	calx	Product Return Reserve Current ProductReturnReserveCurrent	1888000	USD
CY2019Q4	calx	Product Return Reserve Current ProductReturnReserveCurrent	919000	USD
CY2020Q4	calx	Operations Liability Current OperationsLiabilityCurrent	950000	USD
CY2019Q4	calx	Operations Liability Current OperationsLiabilityCurrent	1053000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4737000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	5561000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	68736000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	57546000	USD
CY2020	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	5888000	USD
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	4425000	USD
CY2018	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	5215000	USD
CY2020	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	3974000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	5678000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8547000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7294000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8547000	USD
CY2017Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8708000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	5376000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	9208000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7294000	USD
CY2020Q1	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	6286000	USD
	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	3748000	USD
	us-gaap	Payments For Restructuring PaymentsForRestructuring	1162000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	1376000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	5700000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	4000000.0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3935000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3812000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3917000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3727000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3220000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	42000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	18653000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2713000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	15940000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2994000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12946000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	15940000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.067
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1088000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000.0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	4700000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	3400000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	3800000	USD
CY2020Q4	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	123700000	USD
CY2020Q4	calx	Accrued Excess And Obsolete Inventory At Contract Manufacturer AccruedExcessAndObsoleteInventoryAtContractManufacturer	4000000.0	USD
CY2019Q4	calx	Accrued Excess And Obsolete Inventory At Contract Manufacturer AccruedExcessAndObsoleteInventoryAtContractManufacturer	1900000	USD
CY2020Q3	us-gaap	Treasury Stock Retired Cost Method Amount TreasuryStockRetiredCostMethodAmount	40000000.0	USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000.0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6877000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.66
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	2379000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	14.25
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	6700000	USD
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.25
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	1367000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	8.19
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6801000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.76
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y6M
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	136032000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	6629000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	9.63
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P7Y5M12D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	133412000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3171000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	7.30
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y9M25D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	71208000	USD
CY2020Q4	calx	Sharebased Compensation Arrangementby Sharebased Payment Award Options Outstanding Intrinsic Value Amount Per Share SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsOutstandingIntrinsicValueAmountPerShare	29.76
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	200000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9000000.0	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	400000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	400000	USD
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	4400000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	7600000	USD
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	2700000	USD
CY2020Q4	calx	Number Of Employee Stock Purchase Plans NumberOfEmployeeStockPurchasePlans	2	Plan
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	14000000.0	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11200000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17500000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13960000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11181000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17473000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	8.55
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.66
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.41
CY2020	calx	Percent Of Historical Volatility PercentOfHistoricalVolatility	0.50
CY2020	calx	Percent Of Implied Volatility PercentOfImpliedVolatility	0.50
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2500000	USD
CY2020Q4	calx	Employee Service Sharebased Compensation Nonvested Awards Compensation Cost Notyet Recognized To Be Recognized In Year Two EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotyetRecognizedToBeRecognizedInYearTwo	5100000	USD
CY2020Q4	calx	Employee Service Sharebased Compensation Nonvested Awards Compensation Cost Notyet Recognized To Be Recognized In Year Three EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotyetRecognizedToBeRecognizedInYearThree	4000000.0	USD
CY2020	calx	Employee Service Sharebased Compensation Nonvested Awards Compensation Cost Notyet Recognized To Be Recognized In Year Four EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotyetRecognizedToBeRecognizedInYearFour	2000000.0	USD
CY2020Q4	calx	Employee Service Sharebased Compensation Nonvested Awards Compensation Cost Notyet Recognized To Be Recognized Next Twelve Month EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotyetRecognizedToBeRecognizedNextTwelveMonth	10600000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6801000	shares
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	16142000	shares
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2700000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2500000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	33777000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-17935000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-20463000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	507000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1403000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1695000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	34284000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-16532000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-18768000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	285000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	313000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	105000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	507000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	835000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	360000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	792000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1148000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	465000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	8000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	14000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	65000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1162000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	530000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.056
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.057
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.028
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.003
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.048
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.062
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.072
CY2020	calx	Effective Income Tax Rate Reconciliation Foreign Income Inclusion Percent EffectiveIncomeTaxRateReconciliationForeignIncomeInclusionPercent	0
CY2019	calx	Effective Income Tax Rate Reconciliation Foreign Income Inclusion Percent EffectiveIncomeTaxRateReconciliationForeignIncomeInclusionPercent	-0.013
CY2018	calx	Effective Income Tax Rate Reconciliation Foreign Income Inclusion Percent EffectiveIncomeTaxRateReconciliationForeignIncomeInclusionPercent	-0.012
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.041
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.051
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.043
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.020
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.016
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.004
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.118
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.023
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.481
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.168
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.256
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.374
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2020	calx	Effective Income Tax Rate Reconciliation Topic606 Adjustment Percent EffectiveIncomeTaxRateReconciliationTopic606AdjustmentPercent	0
CY2019	calx	Effective Income Tax Rate Reconciliation Topic606 Adjustment Percent EffectiveIncomeTaxRateReconciliationTopic606AdjustmentPercent	0
CY2018	calx	Effective Income Tax Rate Reconciliation Topic606 Adjustment Percent EffectiveIncomeTaxRateReconciliationTopic606AdjustmentPercent	-0.020
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.023
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.070
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.028
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	114973000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	135019000	USD
CY2020Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	49978000	USD
CY2019Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	47324000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	681000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1541000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	10753000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	9316000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	9219000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	8488000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4821000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4761000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	-568000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	-111000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	-18000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	-10000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	189839000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	206328000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	189858000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	206339000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	19000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	11000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-16500000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-2800000	USD
CY2020	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	100000	USD
CY2019	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	600000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22264000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21998000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	163000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	382000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1415000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	648000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	23516000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-17694000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	33484000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-19298000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22264000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	23500000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22300000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	59074000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	54993000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52609000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2924000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61998000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	54993000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52609000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.32
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.32
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.37
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	753000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6607000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5833000	shares
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	541239000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	35498000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	15800000	USD
CY2020Q4	calx	Contract With Customer Asset Expected To Be Billed Remainder Of Year Percent ContractWithCustomerAssetExpectedToBeBilledRemainderOfYearPercent	0.92
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	424330000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	441320000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20381000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21527000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	5000000.0	USD
CY2019Q4	calx	Contractwith Customer Asset Prior Period Not Recognized ContractwithCustomerAssetPriorPeriodNotRecognized	400000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	2300000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	19189000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	17158000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	19904000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	18340000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	39093000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	71100000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.40
CY2020Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	700000	USD
CY2020	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	200000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	101682000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	119023000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	150508000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	170026000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	45624000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	56405000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	75975000	USD
	us-gaap	Gross Profit GrossProfit	89015000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-6340000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-3338000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	21750000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	24774000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-6944000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	-4212000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	20538000	USD
	us-gaap	Profit Loss ProfitLoss	24102000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.12
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.07
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.12
CY2019Q2	us-gaap	Gross Profit GrossProfit	44668000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	50202000	USD
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.07
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	89350000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	100304000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	114485000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	120191000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	38343000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	54712000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-9113000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-4931000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-2851000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1494000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	-9767000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	-5045000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	-3379000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	497000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.18
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.09
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.06
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.01

Files In Submission

Name	View Source	Status
0001406666-21-000029-index-headers.html	Edgar Link	pending
0001406666-21-000029-index.html	Edgar Link	pending
0001406666-21-000029.txt	Edgar Link	pending
0001406666-21-000029-xbrl.zip	Edgar Link	pending
calx-20201231.htm	Edgar Link	pending
calx-20201231.xsd	Edgar Link	pending
calx-20201231xex1012second.htm	Edgar Link	pending
calx-20201231xex1014xformo.htm	Edgar Link	pending
calx-20201231xex106weening.htm	Edgar Link	pending
calx-20201231xex211subsidi.htm	Edgar Link	pending
calx-20201231xex231kpmgcon.htm	Edgar Link	pending
calx-20201231xex311.htm	Edgar Link	pending
calx-20201231xex312.htm	Edgar Link	pending
calx-20201231xex321.htm	Edgar Link	pending
calx-20201231_cal.xml	Edgar Link	unprocessable
calx-20201231_def.xml	Edgar Link	unprocessable
calx-20201231_g1.jpg	Edgar Link	pending
calx-20201231_htm.xml	Edgar Link	completed
calx-20201231_lab.xml	Edgar Link	unprocessable
calx-20201231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image_01.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$CALX
CALIX, INC Stock $calx

2021 Q1 Form 10-K Financial Statement

#000140666621000029 Filed on February 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CALX CALIX, INC Stock $calx

2021 Q1 Form 10-K Financial Statement

#000140666621000029 Filed on February 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CALX
CALIX, INC Stock $calx