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Share-based Compensation - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 28, 2013
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Apr. 22, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant     563,000    
Board compensation grant period 5 days        
Exercise period of options     10 years    
Stock option granted   0   0  
Issuance of restricted stock awards     99,000    
Expense related to issuance of restricted stock awards     $ 1,530    
2015 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant     563,000    
Long Term Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance target for achievement period     3 years    
Minimum [Member] | Graded and Cliff Vesting [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of options     2 years    
Minimum [Member] | Long Term Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of performance target for achievement     0.00%    
Maximum [Member] | Graded and Cliff Vesting [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of options     5 years    
Maximum [Member] | Long Term Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of performance target for achievement     150.00%    
Stock Compensation Plans [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized stock-based compensation expense     $ 5,363    
Period of recognition of stock-based compensation expense     2 years 1 month 6 days    
Stock Compensation Plans [Member] | 2015 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum aggregate number of shares     350,000    
Shares available for grant         922,000
Plan description     Subject to adjustments as provided in the 2015 Plan, the maximum aggregate number of shares of the Company’s common stock that may be issued under the 2015 Plan may not exceed the sum of (i) 350 shares plus (ii) any shares (A) remaining available for the grant of awards as of the effective date under the 2007 Plan or the 2011 Plan, and/or (B) subject to an award granted under the 2007 Plan or the 2011 Plan, which award is forfeited, cancelled, terminated, expires, or lapses. As of the effectiveness of the 2015 Plan, there were 922 shares available for grant under the 2015 Plan, inclusive of shares previously available for grant under the 2007 Plan and the 2011 Plan that were rolled over to the 2015 Plan.    
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares, Granted   0 95,000 0  
Performance Shares [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares, Granted   0 1,412,000 0