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Commitments and Contingencies Commitments and Contingencies (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] |  |
2016 | $ 3,441 |
2017 | 3,056 |
2018 | 2,521 |
2019 | 2,155 |
2020 | 303 |
Thereafter | 586 |
Total future minimum lease payments | 12,062 |
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] |  |
2016 | 842 |
2017 | 817 |
2018 | 771 |
2019 | 779 |
2020 | 803 |
Thereafter | 7,818 |
Total future minimum lease payments | 11,830 |
Less: amount representing interest (rates ranging from 7.0% to 11.5%) | (5,145) |
Less: current portion of obligations under capital leases | (324) | $ (246)
Long-term obligations under capital leases | $ 6,361 | $ 2,630
Capital Lease Obligations | Minimum |  |
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] |  |
Future Minimum Lease Payments Interest Rate | 7.00% |
Capital Lease Obligations | Maximum |  |
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] |  |
Future Minimum Lease Payments Interest Rate | 11.50% |

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45023-112735 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 Amount of minimum lease payments for capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 + Details
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- Definition Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 + Details
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- Definition Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 + Details
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