Debt - Long- Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 17, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total debt	$ 100,000		$ 92,032
Less current portion	(6,875)		(2,250)
Long-term Debt and Capital Lease Obligations	93,125		89,782
Unamortized Discount and Debt Issuance Costs	(866)		(5,032)
Senior Debt \| Term Loan, net
Debt Instrument [Line Items]
Debt	100,000		39,500
Unamortized Discount and Debt Issuance Costs	$ (866)		$ (363)
Interest Rate	3.61%		2.62%
Convertible Notes
Debt Instrument [Line Items]
Interest Rate		8.00%
Convertible Notes \| 8% Convertible Notes
Debt Instrument [Line Items]
Debt	$ 0		$ 25,000
Unamortized Discount and Debt Issuance Costs	0		$ (4,669)
Interest Rate			8.00%
Convertible Notes \| Convertible Note Derivative Liability
Debt Instrument [Line Items]
Debt	0		$ 27,532
Unamortized Discount and Debt Issuance Costs	$ 0		$ 0

Long-term Debt and Capital Lease Obligations, Gross

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and 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

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- Definition

Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

+ References

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- Definition

Amount of long-term debt and capital lease obligations including current maturities.

+ References

No definition available.

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