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Segment Information - Summary of Company's Reportable Segments (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
Net sales                      
Net sales $ 91,961 $ 89,046 $ 87,869 $ 85,790 $ 96,179 $ 102,100 $ 99,981 $ 89,925 $ 354,666 $ 388,185 $ 409,776
Interest income                      
Interest income                 391 483 618
Interest expense                      
Interest expense                 (565) (658) (450)
Income taxes                      
Income taxes                 5,031 8,549 11,207
Net income                      
Net income 3,045 $ 206 $ 3,680 $ (256) 2,488 $ 2,555 $ 5,080 $ 2,738 6,675 12,861 20,587
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 10,754 17,663 21,034
Depreciation and amortization                      
Depreciation and amortization                 11,532 12,857 12,088
Identifiable assets                      
Assets 324,573       353,967       324,573 353,967  
Operating Segments [Member] | PLP-USA [Member]                      
Net sales                      
Net sales                 142,470 152,567 163,033
Interest income                      
Interest income                 0 0 0
Interest expense                      
Interest expense                 (440) (427) (305)
Income taxes                      
Income taxes                 2,387 4,576 6,032
Net income                      
Net income                 2,031 7,233 10,356
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 5,164 7,673 12,349
Depreciation and amortization                      
Depreciation and amortization                 4,551 4,521 4,185
Identifiable assets                      
Assets 106,854       109,115       106,854 109,115  
Long-lived assets                      
Long-lived assets 40,638       41,131       40,638 41,131  
Operating Segments [Member] | The Americas [Member]                      
Net sales                      
Net sales                 59,290 75,868 72,518
Interest income                      
Interest income                 145 129 290
Interest expense                      
Interest expense                 (56) (130) (41)
Income taxes                      
Income taxes                 1,399 930 2,839
Net income                      
Net income                 3,178 2,647 6,415
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 2,074 4,788 3,020
Depreciation and amortization                      
Depreciation and amortization                 1,862 2,464 2,052
Identifiable assets                      
Assets 60,294       75,752       60,294 75,752  
Long-lived assets                      
Long-lived assets 14,937       19,451       14,937 19,451  
Operating Segments [Member] | EMEA [Member]                      
Net sales                      
Net sales                 53,778 65,446 61,543
Interest income                      
Interest income                 123 223 215
Interest expense                      
Interest expense                 (23) (54) (68)
Income taxes                      
Income taxes                 1,646 2,122 2,052
Net income                      
Net income                 4,881 6,192 6,047
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 1,673 1,375 2,573
Depreciation and amortization                      
Depreciation and amortization                 1,464 1,790 1,792
Identifiable assets                      
Assets 51,006       51,691       51,006 51,691  
Long-lived assets                      
Long-lived assets 11,232       12,504       11,232 12,504  
Operating Segments [Member] | Asia-Pacific [Member]                      
Net sales                      
Net sales                 99,128 94,304 112,682
Interest income                      
Interest income                 123 131 113
Interest expense                      
Interest expense                 (46) (47) (36)
Income taxes                      
Income taxes                 (401) 921 284
Net income                      
Net income                 (3,415) (3,211) (2,231)
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 1,843 3,827 3,092
Depreciation and amortization                      
Depreciation and amortization                 3,655 4,082 4,059
Identifiable assets                      
Assets 106,105       117,093       106,105 117,093  
Long-lived assets                      
Long-lived assets 25,158       29,445       25,158 29,445  
Segment Reconciling Items [Member]                      
Net sales                      
Net sales                 354,666 388,185 409,776
Interest income                      
Interest income                 391 483 618
Interest expense                      
Interest expense                 (565) (658) (450)
Income taxes                      
Income taxes                 5,031 8,549 11,207
Net income                      
Net income                 6,675 12,861 20,587
Expenditure for long-lived assets                      
Expenditure for long-lived assets                 10,754 17,663 21,034
Depreciation and amortization                      
Depreciation and amortization                 11,532 12,857 12,088
Identifiable assets                      
Assets 324,259       353,651       324,259 353,651  
Long-lived assets                      
Long-lived assets 91,965       102,531       91,965 102,531  
Intersegment Eliminations [Member]                      
Intersegment sales                      
Intersegment sales                 24,429 32,334 29,464
Intersegment Eliminations [Member] | PLP-USA [Member]                      
Intersegment sales                      
Intersegment sales                 9,339 12,690 10,944
Intersegment Eliminations [Member] | The Americas [Member]                      
Intersegment sales                      
Intersegment sales                 5,074 5,875 5,949
Intersegment Eliminations [Member] | EMEA [Member]                      
Intersegment sales                      
Intersegment sales                 1,652 1,848 2,080
Intersegment Eliminations [Member] | Asia-Pacific [Member]                      
Intersegment sales                      
Intersegment sales                 8,364 11,921 $ 10,491
Corporate, Non-Segment [Member]                      
Identifiable assets                      
Assets $ 314       $ 316       $ 314 $ 316