Consolidated leverage ratio maximum.

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- Definition

Debt instruments maturity date month and year.

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No definition available.

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- Definition

Increases Decrease in Line of Credit Facility.

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No definition available.

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Line of credit facility accordion feature.

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt classified as current. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Description of the frequency of periodic payments (monthly, quarterly, annual).

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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.

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No definition available.

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Amount of the required periodic payments applied to principal.

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- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

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- 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

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Debt - Additional Information (Details) - USD ($)			9 Months Ended
Debt - Additional Information (Details) - USD ($)	Feb. 26, 2018	Aug. 01, 2017	Sep. 28, 2018	Sep. 27, 2018	Dec. 31, 2017	Jul. 28, 2017	Jan. 10, 2017	May 19, 2016
Debt Instrument [Line Items]
Long-term debt including current maturities			$ 256,424,000		$ 234,619,000
Laser Quantum
Debt Instrument [Line Items]
Percentage of outstanding shares acquired				24.00%			35.00%
Term Loan
Debt Instrument [Line Items]
Current portion of long-term debt			9,200,000		$ 9,200,000
Repayment of debt			9,200,000
Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from debt			55,300,000
Repayment of debt			$ 19,900,000
Revolving Credit Facility \| Laser Quantum
Debt Instrument [Line Items]
Percentage of outstanding shares acquired			24.00%
Second Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	300.00%
Second Amended and Restated Credit Agreement \| Permitted Acquisitions and Stock Repurchases
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	250.00%
Second Amended and Restated Credit Agreement \| Designated Acquisition
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	300.00%
Second Amended and Restated Credit Agreement \| Four Consecutive Quarters Following Designated Acquisition
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	350.00%
Second Amended and Restated Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Long-term debt including current maturities						$ 65,600,000
Second Amended and Restated Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 225,000,000
Third Amendment
Debt Instrument [Line Items]
Debt instrument, frequency of periodic payment			quarterly
Revolving credit facility maturity year			2021-05
Third Amendment \| Term Loan
Debt Instrument [Line Items]
Long-term debt including current maturities		$ 90,600,000
Quarterly installments payable on term loan		2,300,000
Debt instrument, final installment amount		56,100,000
Current portion of long-term debt			$ 9,200,000
Third Amendment \| Revolving Credit Facility
Debt Instrument [Line Items]
Increases the revolving credit facility		100,000,000
Maximum borrowing capacity		325,000,000
Line of credit facility accordion feature		$ 125,000,000
Fourth Amendment
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	350.00%
Fourth Amendment \| Permitted Acquisitions and Stock Repurchases
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	300.00%
Fourth Amendment \| Designated Acquisition
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	350.00%
Fourth Amendment \| Four Consecutive Quarters Following Designated Acquisition
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	400.00%