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Summary of Significant Accounting Policies - Schedule of Correction of Immaterial Error and Reclassification (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Item Effected [Line Items]                      
Total other assets $ 23,642       $ 92,485       $ 23,642 $ 92,485  
Total assets 1,361,827       1,130,572       1,361,827 1,130,572 $ 1,075,218
Long term debt 520,422       450,885       520,422 450,885  
Total liabilities and stockholders' equity 1,361,827       1,130,572       1,361,827 1,130,572  
Net sales 157,021 $ 163,617 $ 192,345 $ 198,798 187,258 $ 177,860 $ 210,746 $ 185,382 711,781 761,246 701,241
Cost of sales                 608,073 613,372 563,122
Gross profit $ 19,070 11,180 32,697 40,761 30,054 22,942 47,445 47,433 103,708 147,874 138,119
Selling, general and administrative expense                 $ 112,288 98,405 95,237
As Previously Reported [Member]                      
Item Effected [Line Items]                      
Total other assets         98,918         98,918  
Total assets         1,137,005         1,137,005  
Long term debt         457,318         457,318  
Total liabilities and stockholders' equity         1,137,005         1,137,005  
Net sales   157,685 182,659 193,858 181,277 171,046 201,662 178,525   732,510 679,287
Cost of sales                   579,155 535,731
Gross profit   13,279 34,882 42,359 31,378 24,386 48,869 48,722   153,355 143,556
Selling, general and administrative expense                   103,886 100,674
Adjustments / Reclassifications [Member]                      
Item Effected [Line Items]                      
Total other assets         (6,433)         (6,433)  
Total assets         (6,433)         (6,433)  
Long term debt         (6,433)         (6,433)  
Total liabilities and stockholders' equity         (6,433)         (6,433)  
Net sales   163,617 192,345 198,798 187,258 177,860 210,746 185,382   28,736 21,954
Cost of sales                   34,217 27,391
Gross profit   $ 11,180 $ 32,697 $ 40,761 $ 30,054 $ 22,942 $ 47,445 $ 47,433   (5,481) (5,437)
Selling, general and administrative expense                   $ (5,481) $ (5,437)