Long-Term Debt, Transfer

No definition available.

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Namespace Prefix:	omcl_
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Balance Type:	credit
Period Type:	duration

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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Debt and Credit Agreements - Narrative (Details) - USD ($)			1 Months Ended		3 Months Ended		6 Months Ended
	Nov. 15, 2019	Jan. 05, 2016	Nov. 30, 2019	Dec. 31, 2017	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 26, 2017
Debt Instrument [Line Items]
Debt issuance costs incurred and capitalized							$ 0
Amortization of debt issuance costs					$ 200,000	$ 600,000	482,000	$ 1,145,000
Interest expense					0	$ 900,000	$ 200,000	$ 2,200,000
Letter of Credit \| Wells Fargo Bank
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 10,000,000.0
Swing Line Loan \| Wells Fargo Bank
Debt Instrument [Line Items]
Maximum borrowing capacity		10,000,000.0
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank
Debt Instrument [Line Items]
Debt issuance costs incurred and capitalized			$ 2,300,000
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| Minimum
Debt Instrument [Line Items]
Commitment fee rate on undrawn commitments	0.15%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| Maximum
Debt Instrument [Line Items]
Commitment fee rate on undrawn commitments	0.30%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| LIBOR
Debt Instrument [Line Items]
Spread on variable interest rate	1.00%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| LIBOR \| Minimum
Debt Instrument [Line Items]
Spread on variable interest rate	1.25%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| LIBOR \| Maximum
Debt Instrument [Line Items]
Spread on variable interest rate	2.00%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| Federal Funds
Debt Instrument [Line Items]
Spread on variable interest rate	0.50%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| LIBOR Plus 1.00% \| Minimum
Debt Instrument [Line Items]
Spread on variable interest rate	0.25%
Line of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank \| LIBOR Plus 1.00% \| Maximum
Debt Instrument [Line Items]
Spread on variable interest rate	1.00%
Line of Credit \| Secured Credit Facility \| Wells Fargo Bank
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 400,000,000.0
Line of Credit \| Secured Credit Facility \| Wells Fargo Bank \| LIBOR \| Interest Rate Option One \| Minimum
Debt Instrument [Line Items]
Spread on variable interest rate		1.50%
Line of Credit \| Secured Credit Facility \| Wells Fargo Bank \| LIBOR \| Interest Rate Option One \| Maximum
Debt Instrument [Line Items]
Spread on variable interest rate		2.25%
Line of Credit \| Secured Credit Facility \| Wells Fargo Bank \| LIBOR \| Interest Rate Option Two \| Minimum
Debt Instrument [Line Items]
Spread on variable interest rate		0.50%
Line of Credit \| Secured Credit Facility \| Wells Fargo Bank \| LIBOR \| Interest Rate Option Two \| Maximum
Debt Instrument [Line Items]
Spread on variable interest rate		1.25%
Line of Credit \| Secured Credit Facility \| Wells Fargo Bank \| Federal Funds \| Interest Rate Option Two
Debt Instrument [Line Items]
Spread on variable interest rate		0.50%
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Balance transfer	$ 80,000,000.0
Outstanding loan balance					$ 0
Line of Credit \| Revolving Credit Facility \| Wells Fargo Bank
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 200,000,000.0							$ 315,000,000.0
Term of debt instrument		5 years
Debt issuance costs incurred and capitalized				$ 2,100,000
Line of Credit \| Revolving Credit Facility \| Wells Fargo Bank \| Minimum
Debt Instrument [Line Items]
Commitment fee rate on undrawn commitments		0.20%
Line of Credit \| Revolving Credit Facility \| Wells Fargo Bank \| Maximum
Debt Instrument [Line Items]
Commitment fee rate on undrawn commitments		0.35%
Line of Credit \| Revolving Credit Facility \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 500,000,000.0
Term of debt instrument	5 years
Line of Credit \| Term Loan Facility
Debt Instrument [Line Items]
Balance transfer	$ (80,000,000.0)
Line of Credit \| Term Loan Facility \| Wells Fargo Bank
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 200,000,000.0
Term of debt instrument		5 years
Line of Credit \| Letter of Credit \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	15,000,000.0
Line of Credit \| Swing Line Loan \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	25,000,000.0
Line of Credit \| Incremental Loan Facility \| Wells Fargo Securities, Citizens Bank and JP Morgan Chase Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 250,000,000.0