Accelerated cash payment.

No definition available.

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- Definition

Accelerated cash payment aggregate amount.

+ References

No definition available.

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- Definition

Accelerated cash payment remaining amount.

+ References

No definition available.

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- Definition

Debt Instrument Covenant Maximum Capital Expenditure Threshold Year Two

+ References

No definition available.

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- Definition

Fixed charge coverage ratio calculation amount divided.

+ References

No definition available.

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- Definition

Fixed charge coverage ratios.

+ References

No definition available.

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- Definition

Prohibition for purchase money financing on incurring additional indebtedness without the prior approval of the bank.

+ References

No definition available.

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- Definition

Ratio of restricted and unrestricted cash and marketable securities to workers compensation and safety incentive liabilities measured quarterly basis.

+ References

No definition available.

+ Details

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- Definition

Restricted money market funds and certificates of deposit current.

+ References

No definition available.

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- 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

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

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

Description of the fees for amounts available, but unused under the credit facility.

+ References

+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ 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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- 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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- Definition

Amount of the required periodic payment applied to principal.

+ References

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ 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 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

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-Name Accounting Standards Codification
-Topic 944
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Revolving Credit Facility and Long-Term Debt - Additional Information (Detail) - USD ($)				3 Months Ended
	Dec. 31, 2016	Jun. 28, 2016	May 24, 2016	Mar. 31, 2016	Apr. 01, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Accelerated cash payment aggregate amount				$ 5,000,000
Scenario Forecast [Member]
Line of Credit Facility [Line Items]
Accelerated cash payment, remaining amount	$ 2,500,000
Subsequent Event [Member]
Line of Credit Facility [Line Items]
Accelerated cash payment			$ 2,500,000
Agreement [Member]
Line of Credit Facility [Line Items]
Restricted money market funds and restricted certificates of deposit, current				$ 38,800,000
Line of credit facility commitment fee description				The Agreement also provides for an unused commitment fee of 0.35% per year on the average daily unused amount of the revolving credit facility, and a fee of 1.75% of the face amount of each letter of credit
Maximum amount of capital expenditures in 2016				$ 4,000,000
Accelerated cash payment aggregate amount				5,000,000
Agreement [Member] \| Scenario Forecast [Member]
Line of Credit Facility [Line Items]
Amount divided to calculate amended fixed charge coverage ratio		$ 9,425,000
Accelerated cash payment, remaining amount	$ 2,500,000
Agreement [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Restricted money market funds and restricted certificates of deposit, current					$ 44,000,000
Accelerated cash payment			$ 2,500,000
Agreement [Member] \| Current Assets [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Restricted money market funds and restricted certificates of deposit, current					44,000,000
Wells Fargo [Member] \| Due on June 30, 2016 [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Term loan payment				5,000,000
Wells Fargo [Member] \| Due on September 30, 2016 [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Term loan payment				5,000,000
Wells Fargo [Member] \| Due on December 31, 2016 [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Term loan payment				$ 5,000,000
Minimum [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Minimum fixed charge coverage ratio				150.00%
Ratio of restricted and unrestricted cash and marketable securities to workers' compensation and safety incentive liabilities				100.00%
Prohibition on incurring additional indebtedness without the prior approval of the Bank in purchase money financing				$ 200,000
Minimum [Member] \| Agreement [Member] \| Scenario Forecast [Member]
Line of Credit Facility [Line Items]
Minimum fixed charge coverage ratio		225.00%
Maximum [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Prohibition on incurring additional indebtedness without the prior approval of the Bank in purchase money financing				$ 400,000
Cash dividend				$ 0.22
Revolving Credit Facility [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Outstanding balance on term loan and revolving credit facility				$ 0		$ 0
Unused commitment fee on unused amount				0.35%
Credit facility, expiration date				Oct. 01, 2017
Revolving Credit Facility [Member] \| Wells Fargo [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Credit facility borrowing capacity				$ 14,000,000
Revolving Credit Facility [Member] \| Daily Floating Rate [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Term loan from Bank, Interest rate description				A daily floating rate of one month LIBOR plus 2.0%
LIBOR plus rate				2.00%
Revolving Credit Facility [Member] \| Fixed Rate [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Term loan from Bank, Interest rate description				A fixed rate of LIBOR plus 2.0%
LIBOR plus rate				2.00%
Cash-Secured Letters of Credit [Member] \| Wells Fargo [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Credit facility borrowing capacity				$ 37,300,000
Cash-Secured Letters of Credit [Member] \| Wells Fargo [Member] \| Agreement [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Credit facility borrowing capacity					$ 42,300,000
Term Loan [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Outstanding balance on term loan and revolving credit facility				$ 15,000,000		15,000,000
Term loan from Bank, Interest rate description				One month LIBOR plus 2.25%
Term loan with principal bank				$ 4,800,000		$ 4,800,000
Payment of monthly principal installments of term loan				18,375
Term Loan [Member] \| Wells Fargo [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Credit facility borrowing capacity				$ 40,000,000
Term loan maturity date				Dec. 31, 2016
Term Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
LIBOR plus rate				2.25%
Term Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Wells Fargo [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Term loan from Bank, Interest rate description				One month LIBOR plus 4.0%
LIBOR plus rate				4.00%
Standby Letters of Credit [Member] \| Agreement [Member] \| Scenario Forecast [Member]
Line of Credit Facility [Line Items]
Credit facility borrowing capacity		$ 6,000,000
Standby Letters of Credit [Member] \| Wells Fargo [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Credit facility borrowing capacity				$ 5,000,000
Unsecured Letters Of Credit [Member] \| Agreement [Member]
Line of Credit Facility [Line Items]
Unused commitment fee on unused amount				1.75%