Description of Business and Basis of Presentation - Additional Information (Detail) (USD $) | 0 Months Ended | 1 Months Ended | 3 Months Ended | 0 Months Ended | | |
In Thousands, except Share data, unless otherwise specified | Feb. 05, 2015 | Oct. 09, 2014 | Oct. 31, 2014 | 3-May-15 | 4-May-14 | Apr. 27, 2015 | 18-May-15 | 26-May-15 | Oct. 21, 2014 | 27-May-15 | Feb. 01, 2015 | Feb. 20, 2015 |
| Segment | Store | Store | Store |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Number of operating segments | | | | 1 | | | | | | | | |
Number of reportable segments | | | | 1 | | | | | | | | |
Increase in authorized share amendment description | | | | In October 2014, we amended and restated our certificate of incorporation to increase our authorized share count to 450,000,000 shares of stock, including 400,000,000 shares of common stock and 50,000,000 shares of preferred stock, each with a par value $0.01 per share and to split our common stock 224.9835679 for 1. | | | | | | | | |
Increased authorized shares | | | 450,000,000 | | | | | | | | | |
Common stock, shares authorized | | | 400,000,000 | 400,000,000 | | | | | | | 400,000,000 | |
Common stock, par value | | | $0.01 | $0.01 | | | | | | | $0.01 | |
Stock split ratio | | | 224.9835679 | | | | | | | | | |
Preferred stock, shares authorized | | | 50,000,000 | 50,000,000 | | | | | | | 50,000,000 | |
Preferred stock, par value | | | $0.01 | | | | | | | | | |
Expiration date of Underwriters option to purchase additional shares | 20-Feb-15 | 21-Oct-14 | | | | | | | | | | |
Common stock, shares issued | | | | 40,517,791 | | | | | | | 40,217,640 | |
Proceeds from the exercise of stock options | | | | $1,346 | | | | | | | | |
Operating income | | | | 35,748 | 28,231 | | | | | | | |
Deferred financing costs net | | | | 5,987 | | | | | | | | |
Common Stock [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock exercised | | | | 300,151 | | | | | | | | |
Director [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | 2.20% | | | | | | | | |
Pelham Manor, New York [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Number of new stores opened | | | | | | 1 | | | | | | |
Euless (Dallas), Texas [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Number of new stores opened | | | | 1 | | | | | | | | |
United States and Canada [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Number of stores opened | | | | 74 | | | | | | | | |
Farmingdale, New York [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Revenue | | | | 110 | 2,365 | | | | | | | |
Operating income | | | | 443 | 509 | | | | | | | |
Maryland [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Revenue | | | | | 2,912 | | | | | | | |
Operating income | | | | | 722 | | | | | | | |
Kentwood (Grand Rapids), Michigan [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Number of new stores opened | | | | | | | 1 | | | | | |
Woburn (Boston), Massachusetts [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Number of new stores opened | | | | | | | | 1 | | | | |
IPO [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock issued | | 5,882,353 | | | | | | | | | | |
Common stock price per share | | 16 | | | | | | | | | | |
Under Writer Exercise Option [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock issued | | 882,352 | | | | | | | | | | |
Common stock exercised | | | | | | | | | 882,352 | | | |
Follow-on Offering [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock price per share | 29.5 | | | | | | | | | | | |
Common stock exercised | 300,151 | | | | | | | | | | | |
Common stock, shares issued | 6,600,000 | | | | | | | | | | | 990,000 |
Weighted average exercise price of exercised options | 4.49 | | | | | | | | | | | |
Proceeds from the exercise of stock options | 1,346 | | | | | | | | | | | |
Follow-on Offering [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock price per share | | | | | | | | | | $31.50 | | |
Common stock exercised | | | | | | | | | | 853,155 | | |
Common stock, shares issued | | | | | | | | | | 9,775,000 | | |
Weighted average exercise price of exercised options | | | | | | | | | | $4.46 | | |
Proceeds from the exercise of stock options | | | | | | | | | | 3,809 | | |
Follow-on Offering [Member] | Common Stock [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock exercised | | | | | | | | | | 604,743 | | |
Follow-on Offering [Member] | Treasury Stock at Cost [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock exercised | | | | | | | | | | 248,412 | | |
Follow-on Offering [Member] | Director [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | 2.20% | | | | | | | | |
Follow-on Offering [Member] | Director [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | | | | | | | 1.10% | | |
Over-Allotment Option [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock, shares issued | | | | | | | | | | | | 990,000 |
Over-Allotment Option [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Common stock, shares issued | | | | | | | | | | 1,275,000 | | |
Oak Hill Capital Management LLC [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | 62.10% | | | | | | | | |
Percentage of term loan held by Oak Hill Advisors, L.P. | | | | 5.00% | | | | | | | | |
Term loan held by Oak Hill Advisors, L.P. | | | | 21,403 | | | | | | | | |
Reimbursement expenses | | | | 14 | 27 | | | | | | | |
Oak Hill Capital Management LLC [Member] | Director [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Board members compensation | | | | $39 | $59 | | | | | | | |
Oak Hill Capital Management LLC [Member] | Follow-on Offering [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | 62.10% | | | | | | | | |
Oak Hill Capital Management LLC [Member] | Follow-on Offering [Member] | Subsequent Event [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | | | | | | | 40.10% | | |
Public [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | 35.70% | | | | | | | | |
Public [Member] | Follow-on Offering [Member] | | | | | | | | | | | | |
Description Of Business And Basis Of Presentation [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock owned | | | | 35.70% | | | | | | | | |