Debt Instrument Basis Spread Reduction On Variable Rate

No definition available.

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- Definition

Debt Instrument, Covenant, Maximum Leverage Ratio

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Interest Rate, Floor Rate

+ References

No definition available.

+ Details

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- Definition

Debt instrument interest rate floor reduction variable rate.

+ References

No definition available.

+ Details

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- Definition

Financing and Legal Costs

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Line Of Credit Facility Amount Increase

+ References

No definition available.

+ Details

Name:	dco_LineOfCreditFacilityAmountIncrease
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum Ebitda Adjusted

+ References

No definition available.

+ Details

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

- Definition

Purchase Price Percent Equal To Principal Amount Plus Accrued And Unpaid Interest

+ References

No definition available.

+ Details

Name:	dco_PurchasePricePercentEqualToPrincipalAmountPlusAccruedAndUnpaidInterest
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Period Type:	duration

- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

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

- 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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Balance Type:	na
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Details

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-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=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- 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

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
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Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

Name:	us-gaap_RepaymentsOfDebt
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Article 5

-Subsection 19, 20, 22

+ Details

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Balance Type:	credit
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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=dco_LondonInterbankOfferedRateMember
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=dco_PromissoryNotesMember
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- Details

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- Details

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Long-Term Debt - Additional information (Detail) (USD $)	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended			0 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Jun. 28, 2014	Jun. 29, 2013	Sep. 27, 2014	Sep. 28, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 28, 2013	Dec. 23, 2013	Oct. 18, 2013
Debt Instrument [Line Items]
Principal pre-payment amount							$ 42,600,000
Remaining borrowing capacity							58,500,000
Interest rate, reduction										0.50%
Interest rate floor, reduction										0.25%
Financing and legal costs		500,000dco_FinancingandLegalCosts
EBITDA adjusted							50,000,000.0dco_MaximumEbitdaAdjusted
Maximum leverage ratio												0.75
Unused borrowing capacity							58,500,000
Outstanding standby letters of credit							1,500,000
Repayments of debt	7,506,000us-gaap_RepaymentsOfDebt	7,506,000us-gaap_RepaymentsOfDebt	15,012,000us-gaap_RepaymentsOfDebt	15,012,000us-gaap_RepaymentsOfDebt	22,519,000us-gaap_RepaymentsOfDebt	22,518,000us-gaap_RepaymentsOfDebt	42,650,000us-gaap_RepaymentsOfDebt	33,024,000us-gaap_RepaymentsOfDebt	26,478,000us-gaap_RepaymentsOfDebt
Fair value debt							213,000,000us-gaap_LongTermDebtFairValue
Maximum
Debt Instrument [Line Items]
Increase credit facility							75,000,000.0
LIBOR
Debt Instrument [Line Items]
Debt instrument, floor rate										1.00%
Debt instrument, basis points										3.75%
Alternate Base Rate
Debt Instrument [Line Items]
Debt instrument, floor rate										2.00%
Debt instrument, basis points										2.75%
Alternate Base Rate \| Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, basis points										0.50%
Senior Unsecured Notes
Debt Instrument [Line Items]
Senior unsecured note							200,000,000.0
Stated interest rate							9.75%
Purchase price percent equal to principal amount plus accrued and unpaid interest							101.00%
Senior Secured Term Loan
Debt Instrument [Line Items]
Minimum quarterly principal payment amounts							500,000.0	25,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity							60,000,000.0
Promissory Notes
Debt Instrument [Line Items]
Repayments of debt											$ 3,000,000