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Stock-Based Compensation - Stock Options and Significant Valuation Assumptions (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 29, 2014 | Sep. 24, 2016 | Sep. 26, 2015 | Sep. 24, 2016 | Sep. 26, 2015 | Mar. 26, 2016 | Oct. 19, 2014 | Jan. 27, 2012
Stock-Based Compensation |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) |  | $ 0.0001 |  | $ 0.0001 |  | $ 0.0001 |  |
Retained earnings |  | $ 24,697 |  | $ 24,697 |  | $ 23,594 |  |
Stock Options |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Stock options granted |  |  |  | 560,892 |  |  |  |
Grant date fair value, per share |  |  |  | $ 2.60 |  |  |  |
Assumptions used |  |  |  |  |  |  |  |
Expected option term |  | N/A | P5Y6M | P5Y6M | P5Y6M |  |  |
Expected volatility factor |  |  | 36.30% |  |  |  |  |
Expected volatility factor, minimum |  |  |  | 35.80% | 33.30% |  |  |
Expected volatility factor, maximum |  |  |  | 36.00% | 37.10% |  |  |
Risk-free interest rate, minimum |  |  |  | 1.38% | 1.60% |  |  |
Risk-free interest rate, maximum |  |  |  | 1.43% | 2.00% |  |  |
Risk-free interest rate |  |  | 1.60% |  |  |  |  |
Expected annual dividend yield |  |  | 0.00% | 0.00% | 0.00% |  |  |
Stock Options |  |  |  |  |  |  |  |
Outstanding at the beginning of period |  |  |  | 2,447,133 |  |  |  |
Granted |  |  |  | 560,892 |  |  |  |
Exercised |  |  |  | (134,677) |  |  |  |
Canceled, forfeited or expired |  |  |  | (181,418) |  |  |  |
Outstanding at the end of period |  | 2,691,930 |  | 2,691,930 |  |  |  |
Vested and expected to vest after end of period |  | 2,691,930 |  | 2,691,930 |  |  |  |
Exercisable at end of period |  | 1,076,104 |  | 1,076,104 |  |  |  |
Grant Date Weighted-Average Exercise Price |  |  |  |  |  |  |  |
Outstanding at the beginning of period |  |  |  | $ 9.87 |  |  |  |
Granted |  |  |  | 7.38 |  |  |  |
Exercised |  |  |  | 5.49 |  |  |  |
Canceled, forfeited or expired |  |  |  | 13.96 |  |  |  |
Outstanding at the end of period |  | $ 9.29 |  | 9.29 |  |  |  |
Vested and expected to vest at end of period |  | 9.29 |  | 9.29 |  |  |  |
Exercisable at end of period |  | $ 8.15 |  | $ 8.15 |  |  |  |
Weighted Average Remaining Contractual Life |  |  |  |  |  |  |  |
Weighted average remaining contractual life, awards outstanding |  |  |  | 6 years 4 months 24 days |  |  |  |
Weighted average remaining contractual life, awards vested and expected to vest |  |  |  | 6 years 4 months 24 days |  |  |  |
Weighted average remaining contractual life, awards exercisable |  |  |  | 5 years 10 months 24 days |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |  |  |
Aggregate intrinsic value, awards exercised |  |  |  | $ 644 |  |  |  |
Aggregate intrinsic value, awards outstanding |  | $ 9,498 |  | 9,498 |  |  |  |
Aggregate intrinsic value, awards vested and expected to vest |  | 9,498 |  | 9,498 |  |  |  |
Aggregate intrinsic value, awards exercisable |  | 4,186 |  | $ 4,186 |  |  |  |
2011 Plan |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Shares authorized |  |  |  |  |  |  |  | 3,750,000
Expiration period |  |  |  | 10 years |  |  |  |
Vesting period |  |  |  | 5 years |  |  |  |
2014 Plan |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Shares authorized |  |  |  |  |  |  | 3,600,000 |
Common stock, par value (in dollars per share) |  |  |  |  |  |  | $ 0.0001 |
2014 Plan | Stock Options |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Expiration period |  |  |  | 8 years |  |  |  |
Vesting period |  |  |  | 5 years |  |  |  |
2014 Plan | Stock Options | Members of management |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Vesting period |  |  | 5 years | 5 years | 5 years |  |  |
Stock options granted |  |  | 10,540 | 560,892 | 294,153 |  |  |
Grant date fair value, per share |  |  | $ 11.52 |  |  |  |  |
Grant date fair value |  |  | $ 100 | $ 1,500 | $ 2,700 |  |  |
Stock Options |  |  |  |  |  |  |  |
Granted |  |  | 10,540 | 560,892 | 294,153 |  |  |
Grant Date Weighted-Average Exercise Price |  |  |  |  |  |  |  |
Exercised |  |  | $ 32.02 |  |  |  |  |
2014 Plan | Stock Options | Members of management | Minimum |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Grant date fair value, per share |  |  |  | $ 2.50 | $ 7.48 |  |  |
Grant Date Weighted-Average Exercise Price |  |  |  |  |  |  |  |
Exercised |  |  |  | 7.11 | 22.31 |  |  |
2014 Plan | Stock Options | Members of management | Maximum |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Grant date fair value, per share |  |  |  | 2.95 | 11.52 |  |  |
Grant Date Weighted-Average Exercise Price |  |  |  |  |  |  |  |
Exercised |  |  |  | $ 8.38 | $ 32.02 |  |  |
2014 Plan | Stock Options | CEO |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Stock options granted | 99,650 |  |  |  |  |  |  |
Assumptions used |  |  |  |  |  |  |  |
Stock price (in dollars per share) | $ 16.00 |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ 16.00 |  |  |  |  |  |  |
Expected option term | P6Y |  |  |  |  |  |  |
Expected volatility factor | 55.00% |  |  |  |  |  |  |
Risk-free interest rate | 1.80% |  |  |  |  |  |  |
Expected annual dividend yield | 0.00% |  |  |  |  |  |  |
Stock Options |  |  |  |  |  |  |  |
Granted | 99,650 |  |  |  |  |  |  |
2014 Plan | Restricted Stock Awards | Minimum |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Vesting period |  |  |  | 1 year |  |  |  |
2014 Plan | Restricted Stock Awards | Maximum |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Vesting period |  |  |  | 4 years |  |  |  |
2014 Plan | Restricted Stock Units |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Vesting period |  |  | 5 years |  | 5 years |  |  |
Aggregate grant date fair value |  | $ 300 | $ 100 | $ 1,100 | $ 1,300 |  |  |
2014 Plan | Restricted Stock Units | Minimum |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Vesting period |  |  |  | 1 year |  |  |  |
2014 Plan | Restricted Stock Units | Maximum |  |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |  |
Vesting period |  |  |  | 5 years |  |  |  |

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- Definition Discloses use of the simplified method to calculate the expected term that stock option awards under the specified plan will exist before being exercised or terminated, the reason and justification for its use, and the periods for which the method was used if it was not used in all periods presented. + 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.D.2.Q6) -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 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Paragraph Question 6 (SAB 110) -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + 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)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + 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)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 Amount by which the current fair value of the underlying stock exceeds the exercise price of 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 -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 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 As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest. + 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 Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + 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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