Shareholders' Equity (Details Textual) $ / shares in Units, $ in Thousands | Mar. 12, 2014USD ($)$ / sharesshares | Feb. 03, 2014USD ($)$ / sharesshares | Jan. 31, 2017USD ($)$ / sharesshares | Dec. 31, 2016USD ($)$ / sharesshares | Dec. 31, 2015USD ($)$ / shares | Dec. 31, 2013₪ / sharesshares | Dec. 31, 2002shares | Dec. 31, 2009USD ($)shares | Jan. 31, 2017₪ / shares | Mar. 12, 2014₪ / shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Stock Issued During Period, Value, New Issues | [1] | | | | $ 4,479 | | | | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | | | | | $ 413 | | | | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | | | | | 3 years | | | | | | | |
Common Stock, Par or Stated Value Per Share | $ / shares | | | | | $ 0.01 | | $ 0.01 | | | | | |
At-The-Market Offering [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Maximum Amount Of Shares To Be Issued | | | | | $ 16,000 | | | | | | | |
Incentive Share Option Plan 2013 [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Common Stock, Capital Shares Reserved for Future Issuance | shares | | | | | 3,090,492 | | | | | | | |
Employee Stock Option [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares | | | | | | | | | 38,637 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | | | | | 8 years 4 months 6 days | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | | | | 9 years 5 months 12 days | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | | | | | $ 3,600 | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | | | | | | | $ 10,300 | | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | | | | | $ 4,300 | | $ 3,200 | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares | | | | | $ 3.76 | | $ 6.48 | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | shares | | | | | 1,110,006 | | | | | | | |
Allocated Share-based Compensation Expense | | | | | $ 1,500 | | $ 970 | | | | | |
Restricted Stock Units (RSUs) [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | | | 4 years | | | | | | | |
Allocated Share-based Compensation Expense | | | | | $ 124,000 | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares | | | | | 78,750 | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost | | | | | $ 121 | | | | | | | |
Director [Member] | Employee Stock Option [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares | | | | 130,000 | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | | 4 years | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares | | | | $ 3.84 | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | | 10 years | | | | | | | | |
Common Stock, Par or Stated Value Per Share | ₪ / shares | | | | | | | | | | | ₪ 0.01 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value | | | | $ 285 | | | | | | | | |
One Employee [Member] | Restricted Stock Units (RSUs) [Member] | Minimum [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | | | 3 months | | | | | | | |
One Employee [Member] | Restricted Stock Units (RSUs) [Member] | Maximum [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | | | 5 years | | | | | | | |
Other Employee [Member] | Restricted Stock Units (RSUs) [Member] | Minimum [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | | | 3 months | | | | | | | |
Other Employee [Member] | Restricted Stock Units (RSUs) [Member] | Maximum [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | | | 1 year | | | | | | | |
Ordinary shares [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | shares | | | | | 933,160 | [1] | | | | 4,995,837 | | |
Stock Issued During Period, Value, New Issues | | | | | $ 2 | [1] | | | | $ 4,200 | | |
Ordinary shares [Member] | IPO [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | shares | | 3,300,000 | | | | | | | | | | |
Stock Issued During Period, Value, New Issues | | $ 40,000 | | | | | | | | | | |
Sale of Stock, Price Per Share | (per share) | | $ 13.50 | | | | | | | | | | ₪ 0.01 |
Payments of Stock Issuance Costs | | $ 4,200 | | | | | | | | | | |
Ordinary shares [Member] | Shareholders and New Investors [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | shares | | | 560,224 | | | | | | | | | |
Stock Issued During Period, Value, New Issues | | | $ 2,000 | | | | | | | | | |
Sale of Stock, Price Per Share | $ / shares | | | $ 3.57 | | | | | | | | | |
Ordinary shares [Member] | Convertible Notes Payable [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | shares | | | | | | | | 1,026,432 | | | | |
Ordinary shares [Member] | Capital Notes [Member] | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | shares | | | | | | | | 1,043,928 | | | | |
Sale of Stock, Price Per Share | ₪ / shares | | | | | | | | ₪ 0.01 | | | | |
| |
[1] | See also Note 10.A.7. | |