Debt - Additional Information (Details) | Oct. 30, 2014USD ($) | May 05, 2018USD ($)Note | Apr. 29, 2017USD ($) | Feb. 03, 2018USD ($) |
Debt Instrument [Line Items] | | | | |
Unamortized debt issuance costs | | $ 162,000 | | $ 190,000 |
Repayment of remaining outstanding balance of notes | | 680,000 | $ 2,386,000 | |
Equipment financing notes | | | | |
Debt Instrument [Line Items] | | | | |
Repayment of remaining outstanding balance of notes | | 71,000,000 | | |
Credit Facility | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, expiration date | Oct. 29, 2019 | | | |
Line of credit facility, maximum borrowing capacity | $ 125,000,000 | | | |
Line of credit facility, potential maximum borrowing capacity | 50,000,000 | | | |
Line of credit facility, amount outstanding | | 59,100,000 | | |
Unamortized debt issuance costs | | 200,000 | | |
Line of credit facility, remaining borrowing capacity | | 32,700,000 | | |
Line of credit facility, average monthly outstanding amount | | 60,800,000 | | |
Line of credit facility, average unused excess availability | | $ 30,400,000 | | |
Debt instrument interest rate | | 10.00% | | |
Line of credit facility | | $ 7,500,000 | | |
Line of credit facility, interest rate description | | Borrowings made pursuant to the Credit Facility bear interest at a rate equal to the base rate (determined as the highest of (a) Bank of America N.A.’s prime rate, (b) the Federal Funds rate plus 0.50% or (c) the annual ICE-LIBOR rate (“LIBOR”) for the respective interest period) plus a varying percentage, based on the Company’s borrowing base, of 0.50%-0.75% for prime-based borrowings and 1.50%-1.75% for LIBOR-based borrowings | | |
Unused line fee | | 0.25% | | |
Credit Facility | Federal Funds Rate | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, basis spread on variable rate | | 0.50% | | |
Credit Facility | Prime-based Borrowings | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility interest rate | | 5.25% | | |
Credit Facility | LIBOR-based Borrowings | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, expiration date | | May 8, 2018 | | |
Line of credit facility, amount outstanding | | $ 56,000,000 | | |
Line of credit facility interest rate | | 3.25% | | |
Credit Facility | Minimum | | | | |
Debt Instrument [Line Items] | | | | |
Debt Instrument Consolidated Fixed Coverage Ratio | | 100.00% | | |
Credit Facility | Minimum | Prime-based Borrowings | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, basis spread on variable rate | | 0.50% | | |
Credit Facility | Minimum | LIBOR-based Borrowings | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, basis spread on variable rate | | 1.50% | | |
Credit Facility | Maximum | Prime-based Borrowings | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, basis spread on variable rate | | 0.75% | | |
Credit Facility | Maximum | LIBOR-based Borrowings | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, basis spread on variable rate | | 1.75% | | |
Credit Facility | Commercial and Standby Letters of Credit | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, maximum borrowing capacity | 20,000,000 | | | |
Credit Facility | Swingline Loans | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, maximum borrowing capacity | $ 15,000,000 | | | |
Credit Facility | Standby Letters of Credit | | | | |
Debt Instrument [Line Items] | | | | |
Letters of credit outstanding, amount | | $ 3,600,000 | | |
Credit Facility | Documentary Letters of Credit | | | | |
Debt Instrument [Line Items] | | | | |
Letters of credit outstanding, amount | | $ 1,500,000 | | |
Master Agreement | | | | |
Debt Instrument [Line Items] | | | | |
Number of notes entered, equipment financing | Note | | 12 | | |
Notes maturity term | | 48 months | | |
Master Agreement | Banc of America Leasing & Capital, LLC | | | | |
Debt Instrument [Line Items] | | | | |
Aggregate amount of notes borrowed | | $ 26,400,000 | | |
Master Agreement | Minimum | | | | |
Debt Instrument [Line Items] | | | | |
Notes fixed interest rate | | 3.07% | | |
Master Agreement | Maximum | | | | |
Debt Instrument [Line Items] | | | | |
Notes fixed interest rate | | 3.50% | | |
Term Loan Facility | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, Initiation date | | Oct. 30, 2014 | | |
Term Loan Facility | Term loan, due 2019 | | | | |
Debt Instrument [Line Items] | | | | |
Line of credit facility, basis spread on variable rate | 6.50% | | | |
Notes fixed interest rate | 1.00% | | | |
Secured term loan facility, face amount | $ 15,000,000 | | | |
Secured term loan facility, effective date | | Oct. 29, 2014 | | |
Debt Instrument, Interest Rate Terms | | Interest on the Term Loan Facility was at a rate per annum equal to the greater of (a) 1.00% and (b) the one month LIBOR rate, plus 6.50%. | | |
Debt Instrument, Payment Terms | | Interest payments were payable on the first business day of each calendar month, and increased by 2% following the occurrence and during the continuance of an “event of default,” as defined in the Term Loan Facility | | |
Debt Instrument, Description of Variable Rate Basis | | one month LIBOR rate | | |
Debt Instrument Interest Rate Increase Decrease Of Event Of Default | 2.00% | | | |
Secured term loan facility, frequency of payments | | quarterly | | |
Secured term loan facility, date of first required payment | | Jan. 1, 2015 | | |
Secured term loan facility, periodic payment principal | | $ 250,000 | | |