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Share-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 14, 2016 | Aug. 27, 2015 | Jun. 30, 2007 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2015 | Jan. 01, 2016 | Dec. 31, 2015 | Dec. 28, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Options, Outstanding, Number |  |  |  | 3,226,943 | 2,354,617 | 3,226,943 | 2,354,617 | 2,354,617 |  | 2,419,529 | 755,617
Shares of Common Stock Available for Grants |  |  |  | 594,274 | 922,635 | 594,274 | 922,635 | 922,635 |  | 837,635 | 276,635
Stock Options Granted in Period |  |  |  |  |  | 1,128,070 |  | 1,610,000 |  |  |
Outstanding Stock Option, Modified Options, Decrease in Exercise Price | $ 1.71 |  |  |  |  |  |  |  |  |  |
Adjusted option, Weighted Average Exercise Price |  |  |  |  |  | $ 7.04 |  |  |  |  |
Modification of Original Options, Unvested, Number |  |  |  |  |  | 1,908,070 |  |  |  |  |
Modification Original Options, Unvested Options, Incremental Fair Value |  |  |  |  |  | $ 1,700 |  |  |  |  |
Share-based compensation |  |  |  | $ 700 |  | $ 2,509 | $ 410 |  |  |  |
Stock Options, Vested, Number |  |  |  |  |  | 429,573 |  |  |  |  |
Number of Adjusted Options |  |  |  |  |  | 2,337,643 |  |  |  |  |
Weighted Average Exercise Price |  |  |  | $ 8.57 | $ 8.10 | $ 8.57 | $ 8.10 | $ 8.10 |  | $ 8.16 | $ 6.09
Options, Exercised in Period |  |  |  |  |  | 310,656 |  | 5,000 |  |  |
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Expense |  |  |  | $ 1,700 | $ 300 | $ 2,500 |  | $ 400 |  |  |
Stock Options Granted in Period |  |  |  | 905,000 | 1,610,000 | 1,128,070 |  | 1,610,000 |  |  |
Weighted Average Grant Date Fair Value |  |  |  | $ 4.80 |  | $ 4.83 |  |  |  |  |
Weighted Average Remaining Contractual Term |  |  |  |  |  | 8 years 3 months 18 days |  |  |  |  |
Weighted Average Exercise Price |  |  |  | $ 8.57 |  | $ 8.57 |  |  |  |  |
Aggregate Intrinsic Value |  |  |  | $ 12,600 |  | $ 12,600 |  |  |  |  |
Options, Exercisable, Weighted Average Remaining Contractual Term |  |  |  |  |  | 2 years |  |  |  |  |
Options, Exercisable, Weighted Average Exercise Price |  |  |  | $ 4.50 |  | $ 4.50 |  |  |  |  |
Options, Exercisable, Aggregate Intrinsic Value |  |  |  | $ 3,300 |  | $ 3,300 |  |  |  |  |
Options, Exercised in Period |  |  |  | 15,700 | 2,500 | 310,656 |  | 5,000 |  |  |
Options, Exercised in Period, Intrinsic Value |  |  |  | $ 100 | $ 100 | $ 1,700 |  | $ 100 |  |  |
Stock Options, Unrecognized Share-based Compensation Expense |  |  |  | $ 10,900 |  | $ 10,900 |  |  |  |  |
Share-based Compensation Expense Not yet Recognized, Weighted-average Period for Recognition |  |  |  |  |  | 3 years 2 months 12 days |  |  |  |  |
2015 Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Options Expiration Term |  | 10 years |  |  |  |  |  |  |  |  |
Number of Shares Authorized |  | 2,250,000 |  |  |  |  |  |  |  |  |
Number of Shares Annual Increase |  | 1,800,000 |  |  |  |  |  |  | 874,709 |  |
Plan Shares Annual Increase Threshold, Percentage |  | 4.00% |  |  |  |  |  |  |  |  |
Maximum Number of Shares Authorized per One Participant |  | 2,000,000 |  |  |  |  |  |  |  |  |
Stock Options, Outstanding, Number |  |  |  | 2,813,070 |  | 2,813,070 |  |  |  |  |
Shares of Common Stock Available for Grants |  |  |  | 311,639 |  | 311,639 |  |  |  |  |
Stock Options, Vested, Number |  |  |  | 444,301 |  | 444,301 |  |  |  |  |
Stock Option and Compensation Plan of 2007 [Member] |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Shares Authorized |  |  | 1,250,000 |  |  |  |  |  |  |  |
Stock Options, Outstanding, Number |  |  |  | 402,671 |  | 402,671 |  |  |  |  |
Shares of Common Stock Available for Grants |  |  |  | 282,635 |  | 282,635 |  |  |  |  |
Share-Based Compensation Vested Options Exercisable Term |  |  | 10 years |  |  |  |  |  |  |  |
Stock Option and Compensation Plan 1998 [Member] |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Options, Outstanding, Number |  |  |  | 11,202 |  | 11,202 |  |  |  |  |
Shares of Common Stock Available for Grants |  |  |  | 0 |  | 0 |  |  |  |  |

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- Definition Annual increase on each January 1 during the ten year term of the 2015 Plan if it is less than 4% of the total shares of the Company's common stock outstanding, and such smaller amount as may be determined by the Board in its sole discretion. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors) per one participant, net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities 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 (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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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. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Change in the weighted average exercise price of options outstanding. + References No definition available. + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, 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 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options vested. + References No definition available. + Details
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