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Long-Term Debt and Credit Facility - Additional Disclosures (Details) - USD ($) |  | 3 Months Ended |
--- | --- | --- | ---
May. 10, 2013 | Mar. 31, 2016 | Dec. 31, 2015
Line of Credit Facility [Line Items] |  |  |
Amount borrowed |  | $ 61,235,000 | $ 50,546,000
Term loan [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount borrowed |  | 23,613,000 | $ 25,398,000
Credit Facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Limit on capital expenditures |  | 25,000,000 |
Annual limit on capital expenditures |  | $ 32,000,000 |
Increase in interest rate (percent) |  | 1.00% |
Covenant, percent of adjusted EBITDA which must be prepaid (percent) | 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 (in days) | 60 days |  |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity | $ 75,000,000.0 | $ 75,000,000.0 |
Minimum average undrawn availability during period |  | 10,000,000 |
Undrawn availability required |  | 5,000,000 |
Credit facility, availability |  | 60,000,000 |
Credit facility, available borrowing capacity, net of outstanding borrowings |  | $ 17,400,000 |
Credit facility, commitment fee percentage (percent) |  | 0.25% |
Credit facility, amount outstanding |  | $ 37,600,000 |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] | PNC Bank Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Base lending rate (percent) |  | 3.50% |
Credit facility, amount outstanding |  | $ 7,600,000 |
Credit facility, interest rate at period end (percent) |  | 5.00% |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] | LIBOR [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, amount outstanding |  | $ 30,000,000 |
Credit facility, interest rate at period end (percent) |  | 2.94% |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] | Minimum [Member] | PNC Bank Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 1.50% |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] | Minimum [Member] | LIBOR [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 2.50% |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] | Maximum [Member] | PNC Bank Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 2.00% |
Credit Facility | Line of Credit [Member] | Revolving Credit Facility [Member] | Maximum [Member] | LIBOR [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 3.00% |
Credit Facility | Letter of Credit [Member] | Revolving Credit Facility [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity |  | $ 10,000,000 |
Credit Facility | Term loan [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt, face amount | 50,000,000.0 |  |
Monthly principal payments | $ 600,000 |  |
Amount borrowed |  | 23,600,000 |
Credit Facility | Term loan [Member] | PNC Bank Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount borrowed |  | $ 600,000 |
Debt, interest rate at period end |  | 5.75% |
Credit Facility | Term loan [Member] | LIBOR [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount borrowed |  | $ 23,000,000 |
Debt, interest rate at period end |  | 3.69% |
Credit Facility | Term loan [Member] | Minimum [Member] | PNC Bank Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 2.25% |
Credit Facility | Term loan [Member] | Minimum [Member] | LIBOR [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 3.25% |
Credit Facility | Term loan [Member] | Maximum [Member] | PNC Bank Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 2.75% |
Credit Facility | Term loan [Member] | Maximum [Member] | LIBOR [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit facility, variable percentage rate spread (percent) |  | 3.75% |

X
- 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 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 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: 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=64930785&loc=d3e28551-108399 + 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 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 Reference 2: 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=64930785&loc=d3e28551-108399 + 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 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 -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 + 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 + 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 + 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 + 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 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. 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 FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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