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Debt - Components of Debt (Details) - USD ($) $ in Thousands | 6 Months Ended | 18 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017
Components of beginning debt balance [Abstract] |  |  |
Long term debt, current portion, net of deferred issuance cost at beginning of period | $ 8,410 |  |
Long term debt, net of deferred issuance cost at beginning of period | 245,731 |  |
Debt Borrowing, Repayment, Amortization during period [Abstract] |  |  |
Repayment of debt and revolving credit facility | (70,500) | $ (22,500) |
Amortization of deferred issuance cost | 795 | $ 795 |
Components of ending debt balance [Abstract] |  |  |
Long term debt, current portion, net of deferred issuance cost at end of period | 10,910 |  | $ 10,910
Long term debt, net of deferred issuance cost at end of period | 183,526 |  | 183,526
Wells Fargo Bank, National Association |  |  |
Components of beginning debt balance [Abstract] |  |  |
Debt under credit facilities at beginning of period | 260,500 |  |
Deferred issuance cost, net at beginning of period | (6,359) |  |
Total Debt, net of deferred issuance cost at beginning of period | 254,141 |  |
Long term debt, current portion, net of deferred issuance cost at beginning of period | 8,410 |  |
Long term debt, net of deferred issuance cost at beginning of period | 245,731 |  |
Debt Borrowing, Repayment, Amortization during period [Abstract] |  |  |
Proceeds from lines of credit | 10,000 |  |
Deferred issuance cost, gross | 0 |  |
Increase in borrowings net of deferred issuance cost | 10,000 |  |
Repayment of debt and revolving credit facility | (70,500) |  | (105,000)
Amortization of deferred issuance cost | 795 |  |
Decrease in repayment/amortization net of deferred issuance cost | (69,705) |  |
Components of ending debt balance [Abstract] |  |  |
Debt under credit facilities at end of period | 200,000 |  | 200,000
Deferred issuance cost, net at end of period | (5,564) |  | (5,564)
Total Debt, net of deferred issuance cost at end of period | 194,436 |  | 194,436
Long term debt, current portion, net of deferred issuance cost at end of period | 10,910 |  | 10,910
Long term debt, net of deferred issuance cost at end of period | 183,526 |  | 183,526
Wells Fargo Bank, National Association | Term Loan Facility |  |  |
Components of beginning debt balance [Abstract] |  |  |
Debt under credit facilities at beginning of period | 192,500 |  |
Debt Borrowing, Repayment, Amortization during period [Abstract] |  |  |
Proceeds from lines of credit | 0 |  |
Repayment of debt and revolving credit facility | (5,000) |  |
Components of ending debt balance [Abstract] |  |  |
Debt under credit facilities at end of period | 187,500 |  | 187,500
Wells Fargo Bank, National Association | Revolving Credit Facility |  |  |
Components of beginning debt balance [Abstract] |  |  |
Debt under credit facilities at beginning of period | 68,000 |  |
Debt Borrowing, Repayment, Amortization during period [Abstract] |  |  |
Proceeds from lines of credit | 10,000 |  |
Repayment of debt and revolving credit facility | (65,500) |  |
Components of ending debt balance [Abstract] |  |  |
Debt under credit facilities at end of period | $ 12,500 |  | $ 12,500

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(8)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 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 210.5-02.17) -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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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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