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Employee Benefit Plan | 12 Months Ended
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Dec. 31, 2017
Postemployment Benefits [Abstract] |
Employee Benefit Plan | Employee Benefit Plan The Company has a 401(k) tax-deferred savings plan under which eligible employees may elect to have a portion of their salary deferred and contributed to the 401(k) plan. Contributions may be matched by the Company at its discretion. The Company matched 50% of the employee’s contribution up to $4,000 for 2017 and 25% of the employee's contribution up to $3,000 for 2016. From 2008 to 2015, the Company matched 25% of the employee's contribution up to $2,000 for every year.
| Year ended December 31,
| 2017 |  | 2016 |  | 2015
| (In thousands)
Company contribution to 401 (k) plan | $ | 259 |  |  | $ | 172 |  |  | $ | 127 |

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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- References No definition available. + Details
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