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Debt Credit Agreement (Details)		6 Months Ended	12 Months Ended
	Mar. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) installment loan	Dec. 31, 2016 USD ($) installment loan	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt			$ 5,000,000	$ 0	$ 0
Conversion of accrued interest to long-term debt			$ 385,000	$ 0	$ 0
Visium | Line of Credit
Debt Instrument [Line Items]
Number of term loans | loan		2	2
Line of credit facility, maximum borrowing capacity		$ 40,000,000.0	$ 40,000,000.0
Interest rate, stated percentage		12.00%	12.00%
Number of installments | installment		8	8
Term of debt with equal quarterly installments			2 years
Fixed rate percentage paid in cash		0.090	0.090
Interest paid-in-kind percentage		0.030	0.030
Conversion of accrued interest to long-term debt		$ 385,000
Minimum prepayment allowed			$ 5,000,000
Prepayment amount excess multiple			$ 1,000,000
Penalty percentage on prepayment period one			0.240
Penalty percentage on prepayment period two			0.040
Penalty percentage on prepayment period three			0.020
Penalty percentage on prepayment period four			0.010
Period for which rights equity financings			1 year
Visium | Line of Credit | Maximum
Debt Instrument [Line Items]
Future equity financings amount		5,000,000	$ 5,000,000
Visium | Line of Credit | Initial Term Loan
Debt Instrument [Line Items]
Proceeds from lines of credit	$ 25,000,000
Repayments of long-term debt	$ 5,000,000
Visium | Line of Credit | Second Term Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 15,000,000	$ 15,000,000

X

- Definition

Contractual interest rate for funds borrowed, under the debt 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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

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Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

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-Topic 235
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-Section S99
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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

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Rate for which Company may elect to pay interest in cash.

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The amount for which lender can participate in future equity financings.

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Percentage of interest rate for which interest is paid-in-kind by adding paid-in-kind interest to the outstanding principal amounts of the Term Loans.

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Amount of prepayment allowed under the current agreement.

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The period for which the lender has the right to participate in certain future equity financings of the Company.

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The whole multiple for which payments must be made in excess of minimum prepayment.

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Represents the number of term loans available to the Company.

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