Stockholders' Deficit - Summary of Stock Options Outstanding and Exercisable (Details) - $ / shares shares in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Stock options outstanding and exercisable
Stock options outstanding, Vested Options	358	358
Stock options outstanding, Unvested Options	50	50
Stock options outstanding, Weighted Average Exercise Price	$ 4.32	$ 4.32	$ 4.32
Weighted Average Remaining Contractual Life (Years), Outstanding	7 years 8 months 12 days	7 years 8 months 12 days
Stock options, Number Exercisable	358	358
Stock options, Exercisable, Weighted Average Exercise Price	$ 4.50	$ 4.50
1.03 - 2.99
Stock options outstanding and exercisable
Range of Exercise Price, Lower Range		1.03
Range of Exercise Price, Upper Range		$ 2.99
Stock options outstanding, Vested Options	45	45
Stock options outstanding, Unvested Options	50	50
Stock options outstanding, Weighted Average Exercise Price	$ 2.68	$ 2.68
Weighted Average Remaining Contractual Life (Years), Outstanding		8 years 10 months 25 days
Stock options, Number Exercisable	45	45
Stock options, Exercisable, Weighted Average Exercise Price	$ 2.33	$ 2.33
3.00 - 4.99
Stock options outstanding and exercisable
Range of Exercise Price, Lower Range		3.00
Range of Exercise Price, Upper Range		$ 4.99
Stock options outstanding, Vested Options	273	273
Stock options outstanding, Weighted Average Exercise Price	$ 3.21	$ 3.21
Weighted Average Remaining Contractual Life (Years), Outstanding		8 years 1 month 6 days
Stock options, Number Exercisable	273	273
Stock options, Exercisable, Weighted Average Exercise Price	$ 3.21	$ 3.21
5.00 - 9.99
Stock options outstanding and exercisable
Range of Exercise Price, Lower Range		5.00
Range of Exercise Price, Upper Range		$ 9.99
Stock options outstanding, Vested Options	20	20
Stock options outstanding, Weighted Average Exercise Price	$ 7.50	$ 7.50
Weighted Average Remaining Contractual Life (Years), Outstanding		2 years 9 months 18 days
Stock options, Number Exercisable	20	20
Stock options, Exercisable, Weighted Average Exercise Price	$ 7.50	$ 7.50
10.00 - 49.99
Stock options outstanding and exercisable
Range of Exercise Price, Lower Range		10.00
Range of Exercise Price, Upper Range		$ 49.99
Stock options outstanding, Vested Options	20	20
Stock options outstanding, Weighted Average Exercise Price	$ 24.03	$ 24.03
Weighted Average Remaining Contractual Life (Years), Outstanding		1 year
Stock options, Number Exercisable	20	20
Stock options, Exercisable, Weighted Average Exercise Price	$ 24.03	$ 24.03

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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-Publisher FASB
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-Section 50
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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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