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Long-Term Debt and Credit Facility - Credit Facility (Details) (USD $) | 9 Months Ended | 12 Months Ended | 9 Months Ended |  |  |  | 0 Months Ended | 9 Months Ended |  |  | 9 Months Ended
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Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2014 Line of Credit [Member] | Sep. 30, 2014 Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 Revolving Credit Facility [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] | Sep. 30, 2014 Letter of Credit [Member] Revolving Credit Facility [Member] | Mar. 03, 2014 Term loan [Member] | Sep. 30, 2014 Term loan [Member] | Dec. 31, 2013 Term loan [Member] | Sep. 30, 2014 PNC Bank Base Rate [Member] Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 PNC Bank Base Rate [Member] Term loan [Member] | Sep. 30, 2014 London Interbank Lending Rate (LIBOR) [Member] Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 London Interbank Lending Rate (LIBOR) [Member] Term loan [Member] | Sep. 30, 2014 Minimum [Member] PNC Bank Base Rate [Member] Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 Minimum [Member] PNC Bank Base Rate [Member] Term loan [Member] | Sep. 30, 2014 Minimum [Member] London Interbank Lending Rate (LIBOR) [Member] Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 Minimum [Member] London Interbank Lending Rate (LIBOR) [Member] Term loan [Member] | Sep. 30, 2014 Maximum [Member] PNC Bank Base Rate [Member] Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 Maximum [Member] PNC Bank Base Rate [Member] Term loan [Member] | Sep. 30, 2014 Maximum [Member] London Interbank Lending Rate (LIBOR) [Member] Line of Credit [Member] Revolving Credit Facility [Member] | Sep. 30, 2014 Maximum [Member] London Interbank Lending Rate (LIBOR) [Member] Term loan [Member]
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 75,000,000.0 |  |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  |  | 50,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, financial covenant, EBITDA to debt ratio, upper range | 1.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, financial covenant, funded debt to adjusted EBITDA ratio | 4.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual limit on capital expenditures |  |  | 36,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenant, Percent of Adjusted EBITDA Which Must Be Prepaid | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility Ceiling Value, Applicable to 25% Of Adjusted EBITDA Which Must Be Paid | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenant, Maximum Number of Days From Year End By Which Prepayment of 25% of Adjusted EBTDA is Due | 60 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Excess Cash Flow Minimum Achieved Under Loan Covenant |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount paid on term loan due to covenant requirement |  |  |  |  |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, variable percentage rate spread |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% | 1.25% | 1.50% | 2.25% | 1.00% | 1.75% | 2.00% | 2.75%
Base lending rate |  |  |  |  |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |
Credit facility, commitment fee percentage |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, amount outstanding |  |  |  |  |  |  |  |  |  |  | 200,000 |  | 4,000,000 |  |  |  |  |  |  |  |  |
Credit facility, interest rate at period end |  |  |  |  |  |  |  |  |  |  | 3.75% |  | 1.66% |  |  |  |  |  |  |  |  |
Debt, interest rate at period end |  |  |  |  |  |  |  |  |  |  |  | 4.50% |  | 2.41% |  |  |  |  |  |  |  |
Credit facility, availability |  |  |  | 74,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, available borrowing capacity, net of outstanding borrowings |  |  |  | 70,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount borrowed | 41,551,000 | 62,105,000 |  |  | 4,224,000 | 16,272,000 |  |  | 37,327,000 | 45,833,000 |  | 300,000 |  | 37,000,000 |  |  |  |  |  |  |  |
Monthly principal payments |  |  |  |  |  |  |  |  | $ 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Covenant, Maximum Number of Days From Year End By Which Prepayment of 25% of Adjusted EBTDA is Due + References No definition available. + Details
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- Definition Covenant, Percent of Adjusted EBITDA Which Must Be Prepaid + References No definition available. + Details
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- Definition Credit Facility Ceiling Value, Applicable to 25% Of Adjusted EBITDA Which Must Be Paid + References No definition available. + Details
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- Definition Debt Instrument, Basis Spread on Variable Rate, Base Rate + References No definition available. + Details
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- Definition Excess Cash Flow Minimum Achieved Under Loan Covenant + References No definition available. + Details
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- Definition Line of Credit Facility, Covenant Compliance, Capital Expenditures + References No definition available. + Details
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- Definition Line of Credit Facility, Debt Covenant, Ratio of Debt to Adjusted EBITDA + References No definition available. + Details
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- Definition Line of Credit Facility, Financial Covenant, Earnings Before Interest Taxes Depreciation and Amortization to Debt Ratio + References No definition available. + Details
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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 Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of the required periodic payments applied to principal. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: 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 + 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 Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate at the end of the reporting period. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- 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 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 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 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: 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 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
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