Long-Term Debt and Credit Facility (Credit Facility) (Details) - Restated Revolving Credit, Term Loan and Security Agreement	May 10, 2013 USD ($)
Debt Instrument [Line Items]
Percent of adjusted EBITDA which must be paid	25.00%
Credit facility ceiling value, applicable to 25% of adjusted 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
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 75,000,000.0
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	75,000,000
Undrawn availability threshold to reduce annual capital expenditures limit	$ 15,000,000
Line of Credit | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Credit facility, financial covenant, fixed charge coverage ratio	1.00
Credit facility, financial covenant, funded debt to adjusted EBITDA ratio	3.0
Line of Credit | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Credit facility, financial covenant, fixed charge coverage ratio	1.10
Credit facility, financial covenant, funded debt to adjusted EBITDA ratio	5.5
2017
Debt Instrument [Line Items]
Annual limit on capital expenditures	$ 20,000,000
2018 and each fiscal year thereafter
Debt Instrument [Line Items]
Annual limit on capital expenditures	$ 26,000,000