Amount of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Increase for accrued, but unpaid interest on the debt instrument for the period.

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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.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Debt - Bridge Notes (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 22, 2016	Dec. 31, 2016	Dec. 31, 2015	Jul. 14, 2016
Debt Instrument [Line Items]
Issuance of common stock, net of offering costs		$ 49,044	$ 76,056
Bridge Loan
Debt Instrument [Line Items]
Debt instrument, face amount	$ 3,100			$ 52,600
Accrued interest, increase	300
Deferred finance costs, net	$ 3,000
Bridge Loan \| Rights Offering
Debt Instrument [Line Items]
Shares subscribed but unissued	4,000,000
Issuance of common stock, net of offering costs	$ 49,900
Common Stock \| Bridge Loan \| Rights Offering
Debt Instrument [Line Items]
Conversion of Bridge Notes (in shares)	272,733
Conversion price	$ 12.25