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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)

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