Long-Term Debt and Credit Facility - Additional Disclosures (Details) - USD ($)			6 Months Ended
	Jun. 13, 2018	Sep. 30, 2016	Jun. 30, 2018	May 10, 2013
Credit Facility
Line of Credit Facility [Line Items]
Limit on capital expenditures			$ 26,000,000
Covenant, percent of adjusted EBITDA which must be prepaid			25.00%
Credit facility ceiling value applicable to 25% of adjusting EBITDA which must be paid			$ 3,000,000.0
Covenant, maximum number of days from year end by which prepayment of 25% of adjusted EBITDA is due			75 days
Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 75,000,000			$ 75,000,000
Capacity available for inventory	52,000,000
Undrawn availability required	15,000,000
Credit facility, available borrowing capacity, net of outstanding borrowings			$ 25,500,000
Credit Facility | Line of Credit | Borrowings under revolving credit facility
Line of Credit Facility [Line Items]
Possible reduction in maximum borrowing capacity	$ 10,000,000
Fixed coverage charge ratio requirement			1.10
Leverage ratio requirement			3.0
Undrawn availability required			$ 15,000,000
Credit facility, availability			66,100,000
Credit facility, available borrowing capacity, net of outstanding borrowings			$ 17,000,000
Credit facility, commitment fee percentage			0.25%
Credit facility, amount outstanding			$ 49,100,000
Credit Facility | Line of Credit | Borrowings under revolving credit facility | PNC Bank Base Rate
Line of Credit Facility [Line Items]
Base lending rate			5.00%
Credit facility, amount outstanding			$ 3,100,000
Credit facility, interest rate at period end			6.50%
Credit Facility | Line of Credit | Borrowings under revolving credit facility | LIBOR
Line of Credit Facility [Line Items]
Credit facility, amount outstanding			$ 46,000,000
Credit facility, interest rate at period end			4.60%
Credit Facility | Line of Credit | Borrowings under revolving credit facility | Minimum
Line of Credit Facility [Line Items]
Leverage ratio requirement			3.00
Credit Facility | Line of Credit | Borrowings under revolving credit facility | Minimum | PNC Bank Base Rate
Line of Credit Facility [Line Items]
Credit facility, variable percentage rate spread			1.50%
Credit Facility | Line of Credit | Borrowings under revolving credit facility | Minimum | LIBOR
Line of Credit Facility [Line Items]
Credit facility, variable percentage rate spread			2.50%
Credit Facility | Line of Credit | Borrowings under revolving credit facility | Maximum | PNC Bank Base Rate
Line of Credit Facility [Line Items]
Credit facility, variable percentage rate spread			2.00%
Credit Facility | Line of Credit | Borrowings under revolving credit facility | Maximum | LIBOR
Line of Credit Facility [Line Items]
Credit facility, variable percentage rate spread			3.00%
Credit Facility | Letter of Credit | Borrowings under revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity				10,000,000
Credit Facility | Term loan
Line of Credit Facility [Line Items]
Debt, face amount		$ 10,000,000
Monthly principal payments		$ 200,000
Tenth Amendment to the Credit Facility | Line of Credit | Borrowings under revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 75,000,000