Convertible Debt (Details) - Convertible Debt [Member] - Convertible Senior Notes Due 2020 [Member] - USD ($) |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 29, 2015 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Dec. 31, 2014 |
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| Debt Instrument [Line Items] | ||||||
| Aggregate principal amount | $ 115,000,000 | |||||
| Coupon rate | 7.00% | |||||
| Amount of underwriter's discount | $ 3,700,000 | |||||
| Amortization of discount | $ 192,000 | $ 192,000 | ||||
| Deferred debt issuance costs, net | 179,000 | 179,000 | $ 0 | |||
| Interest expense | $ 9,000 | $ 0 | $ 9,000 | $ 0 | ||
| Conversion rate, principal amount of convertible note | $ 1,000 | |||||
| Percentage of principal amount redeemed | 100.00% | |||||
| Common Stock [Member] | ||||||
| Debt Instrument [Line Items] | ||||||
| Conversion rate, number of common stock (in shares) | 151.5152 | |||||
| Conversion price per share of common stock | $ 6.60 | |||||
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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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- Definition Percentage of principal amount of debt redeemed. No definition available.
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- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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